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/*
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* QEMU generic PowerPC hardware System Emulator
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*
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* Copyright (c) 2003-2007 Jocelyn Mayer
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h" |
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#include "ppc.h" |
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#include "qemu/timer.h" |
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#include "sysemu/sysemu.h" |
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#include "nvram.h" |
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#include "qemu/log.h" |
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#include "loader.h" |
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#include "sysemu/kvm.h" |
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#include "kvm_ppc.h" |
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//#define PPC_DEBUG_IRQ
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//#define PPC_DEBUG_TB
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#ifdef PPC_DEBUG_IRQ
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# define LOG_IRQ(...) qemu_log_mask(CPU_LOG_INT, ## __VA_ARGS__) |
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#else
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# define LOG_IRQ(...) do { } while (0) |
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#endif
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#ifdef PPC_DEBUG_TB
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# define LOG_TB(...) qemu_log(__VA_ARGS__)
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#else
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# define LOG_TB(...) do { } while (0) |
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#endif
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static void cpu_ppc_tb_stop (CPUPPCState *env); |
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static void cpu_ppc_tb_start (CPUPPCState *env); |
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|
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void ppc_set_irq(PowerPCCPU *cpu, int n_IRQ, int level) |
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{
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CPUPPCState *env = &cpu->env; |
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unsigned int old_pending = env->pending_interrupts; |
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if (level) {
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env->pending_interrupts |= 1 << n_IRQ;
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cpu_interrupt(env, CPU_INTERRUPT_HARD); |
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} else {
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env->pending_interrupts &= ~(1 << n_IRQ);
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if (env->pending_interrupts == 0) |
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cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); |
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} |
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if (old_pending != env->pending_interrupts) {
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#ifdef CONFIG_KVM
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kvmppc_set_interrupt(cpu, n_IRQ, level); |
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#endif
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} |
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LOG_IRQ("%s: %p n_IRQ %d level %d => pending %08" PRIx32
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"req %08x\n", __func__, env, n_IRQ, level,
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env->pending_interrupts, env->interrupt_request); |
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} |
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/* PowerPC 6xx / 7xx internal IRQ controller */
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static void ppc6xx_set_irq(void *opaque, int pin, int level) |
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{
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PowerPCCPU *cpu = opaque; |
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CPUPPCState *env = &cpu->env; |
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int cur_level;
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LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
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env, pin, level); |
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cur_level = (env->irq_input_state >> pin) & 1;
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/* Don't generate spurious events */
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if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) { |
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switch (pin) {
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case PPC6xx_INPUT_TBEN:
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/* Level sensitive - active high */
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LOG_IRQ("%s: %s the time base\n",
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__func__, level ? "start" : "stop"); |
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if (level) {
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cpu_ppc_tb_start(env); |
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} else {
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cpu_ppc_tb_stop(env); |
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} |
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case PPC6xx_INPUT_INT:
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/* Level sensitive - active high */
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LOG_IRQ("%s: set the external IRQ state to %d\n",
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__func__, level); |
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ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level); |
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break;
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case PPC6xx_INPUT_SMI:
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/* Level sensitive - active high */
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LOG_IRQ("%s: set the SMI IRQ state to %d\n",
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__func__, level); |
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ppc_set_irq(cpu, PPC_INTERRUPT_SMI, level); |
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break;
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case PPC6xx_INPUT_MCP:
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/* Negative edge sensitive */
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/* XXX: TODO: actual reaction may depends on HID0 status
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* 603/604/740/750: check HID0[EMCP]
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*/
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if (cur_level == 1 && level == 0) { |
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LOG_IRQ("%s: raise machine check state\n",
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__func__); |
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ppc_set_irq(cpu, PPC_INTERRUPT_MCK, 1);
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} |
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break;
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case PPC6xx_INPUT_CKSTP_IN:
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/* Level sensitive - active low */
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/* XXX: TODO: relay the signal to CKSTP_OUT pin */
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/* XXX: Note that the only way to restart the CPU is to reset it */
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if (level) {
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LOG_IRQ("%s: stop the CPU\n", __func__);
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env->halted = 1;
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} |
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break;
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case PPC6xx_INPUT_HRESET:
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/* Level sensitive - active low */
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if (level) {
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LOG_IRQ("%s: reset the CPU\n", __func__);
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cpu_interrupt(env, CPU_INTERRUPT_RESET); |
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} |
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break;
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case PPC6xx_INPUT_SRESET:
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LOG_IRQ("%s: set the RESET IRQ state to %d\n",
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__func__, level); |
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ppc_set_irq(cpu, PPC_INTERRUPT_RESET, level); |
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break;
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default:
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/* Unknown pin - do nothing */
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LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
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return;
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} |
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if (level)
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env->irq_input_state |= 1 << pin;
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else
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env->irq_input_state &= ~(1 << pin);
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} |
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} |
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void ppc6xx_irq_init(CPUPPCState *env)
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{
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PowerPCCPU *cpu = ppc_env_get_cpu(env); |
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env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, cpu,
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PPC6xx_INPUT_NB); |
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} |
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#if defined(TARGET_PPC64)
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/* PowerPC 970 internal IRQ controller */
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static void ppc970_set_irq(void *opaque, int pin, int level) |
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{
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PowerPCCPU *cpu = opaque; |
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CPUPPCState *env = &cpu->env; |
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int cur_level;
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LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
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env, pin, level); |
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cur_level = (env->irq_input_state >> pin) & 1;
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/* Don't generate spurious events */
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if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) { |
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switch (pin) {
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case PPC970_INPUT_INT:
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/* Level sensitive - active high */
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LOG_IRQ("%s: set the external IRQ state to %d\n",
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__func__, level); |
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ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level); |
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break;
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case PPC970_INPUT_THINT:
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/* Level sensitive - active high */
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LOG_IRQ("%s: set the SMI IRQ state to %d\n", __func__,
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level); |
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ppc_set_irq(cpu, PPC_INTERRUPT_THERM, level); |
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break;
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case PPC970_INPUT_MCP:
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/* Negative edge sensitive */
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/* XXX: TODO: actual reaction may depends on HID0 status
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* 603/604/740/750: check HID0[EMCP]
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*/
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if (cur_level == 1 && level == 0) { |
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LOG_IRQ("%s: raise machine check state\n",
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__func__); |
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ppc_set_irq(cpu, PPC_INTERRUPT_MCK, 1);
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} |
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break;
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case PPC970_INPUT_CKSTP:
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/* Level sensitive - active low */
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/* XXX: TODO: relay the signal to CKSTP_OUT pin */
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if (level) {
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LOG_IRQ("%s: stop the CPU\n", __func__);
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env->halted = 1;
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} else {
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LOG_IRQ("%s: restart the CPU\n", __func__);
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env->halted = 0;
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qemu_cpu_kick(CPU(cpu)); |
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} |
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break;
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case PPC970_INPUT_HRESET:
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/* Level sensitive - active low */
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if (level) {
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cpu_interrupt(env, CPU_INTERRUPT_RESET); |
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} |
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break;
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case PPC970_INPUT_SRESET:
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LOG_IRQ("%s: set the RESET IRQ state to %d\n",
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__func__, level); |
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ppc_set_irq(cpu, PPC_INTERRUPT_RESET, level); |
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break;
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case PPC970_INPUT_TBEN:
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LOG_IRQ("%s: set the TBEN state to %d\n", __func__,
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level); |
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/* XXX: TODO */
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break;
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default:
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/* Unknown pin - do nothing */
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LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
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return;
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} |
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if (level)
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env->irq_input_state |= 1 << pin;
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else
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env->irq_input_state &= ~(1 << pin);
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} |
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} |
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void ppc970_irq_init(CPUPPCState *env)
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{
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PowerPCCPU *cpu = ppc_env_get_cpu(env); |
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env->irq_inputs = (void **)qemu_allocate_irqs(&ppc970_set_irq, cpu,
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PPC970_INPUT_NB); |
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} |
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|
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/* POWER7 internal IRQ controller */
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static void power7_set_irq(void *opaque, int pin, int level) |
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{
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PowerPCCPU *cpu = opaque; |
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CPUPPCState *env = &cpu->env; |
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LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
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env, pin, level); |
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switch (pin) {
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case POWER7_INPUT_INT:
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/* Level sensitive - active high */
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LOG_IRQ("%s: set the external IRQ state to %d\n",
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__func__, level); |
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ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level); |
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break;
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default:
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/* Unknown pin - do nothing */
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LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
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return;
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} |
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if (level) {
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env->irq_input_state |= 1 << pin;
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} else {
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env->irq_input_state &= ~(1 << pin);
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} |
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} |
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void ppcPOWER7_irq_init(CPUPPCState *env)
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{
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PowerPCCPU *cpu = ppc_env_get_cpu(env); |
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env->irq_inputs = (void **)qemu_allocate_irqs(&power7_set_irq, cpu,
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POWER7_INPUT_NB); |
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} |
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#endif /* defined(TARGET_PPC64) */ |
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|
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/* PowerPC 40x internal IRQ controller */
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static void ppc40x_set_irq(void *opaque, int pin, int level) |
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{
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PowerPCCPU *cpu = opaque; |
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CPUPPCState *env = &cpu->env; |
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int cur_level;
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LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
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env, pin, level); |
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cur_level = (env->irq_input_state >> pin) & 1;
|
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/* Don't generate spurious events */
|
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if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) { |
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switch (pin) {
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case PPC40x_INPUT_RESET_SYS:
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if (level) {
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LOG_IRQ("%s: reset the PowerPC system\n",
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__func__); |
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ppc40x_system_reset(cpu); |
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} |
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break;
|
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case PPC40x_INPUT_RESET_CHIP:
|
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if (level) {
|
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LOG_IRQ("%s: reset the PowerPC chip\n", __func__);
|
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ppc40x_chip_reset(cpu); |
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} |
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break;
|
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case PPC40x_INPUT_RESET_CORE:
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/* XXX: TODO: update DBSR[MRR] */
|
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if (level) {
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LOG_IRQ("%s: reset the PowerPC core\n", __func__);
|
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ppc40x_core_reset(cpu); |
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} |
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break;
|
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case PPC40x_INPUT_CINT:
|
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/* Level sensitive - active high */
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LOG_IRQ("%s: set the critical IRQ state to %d\n",
|
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__func__, level); |
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ppc_set_irq(cpu, PPC_INTERRUPT_CEXT, level); |
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break;
|
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case PPC40x_INPUT_INT:
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/* Level sensitive - active high */
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LOG_IRQ("%s: set the external IRQ state to %d\n",
|
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__func__, level); |
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ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level); |
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break;
|
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case PPC40x_INPUT_HALT:
|
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/* Level sensitive - active low */
|
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if (level) {
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LOG_IRQ("%s: stop the CPU\n", __func__);
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env->halted = 1;
|
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} else {
|
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LOG_IRQ("%s: restart the CPU\n", __func__);
|
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env->halted = 0;
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qemu_cpu_kick(CPU(cpu)); |
| 340 |
} |
| 341 |
break;
|
| 342 |
case PPC40x_INPUT_DEBUG:
|
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/* Level sensitive - active high */
|
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LOG_IRQ("%s: set the debug pin state to %d\n",
|
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__func__, level); |
| 346 |
ppc_set_irq(cpu, PPC_INTERRUPT_DEBUG, level); |
| 347 |
break;
|
| 348 |
default:
|
| 349 |
/* Unknown pin - do nothing */
|
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LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
|
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return;
|
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} |
| 353 |
if (level)
|
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env->irq_input_state |= 1 << pin;
|
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else
|
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env->irq_input_state &= ~(1 << pin);
|
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} |
| 358 |
} |
| 359 |
|
| 360 |
void ppc40x_irq_init(CPUPPCState *env)
|
| 361 |
{
|
| 362 |
PowerPCCPU *cpu = ppc_env_get_cpu(env); |
| 363 |
|
| 364 |
env->irq_inputs = (void **)qemu_allocate_irqs(&ppc40x_set_irq,
|
| 365 |
cpu, PPC40x_INPUT_NB); |
| 366 |
} |
| 367 |
|
| 368 |
/* PowerPC E500 internal IRQ controller */
|
| 369 |
static void ppce500_set_irq(void *opaque, int pin, int level) |
| 370 |
{
|
| 371 |
PowerPCCPU *cpu = opaque; |
| 372 |
CPUPPCState *env = &cpu->env; |
| 373 |
int cur_level;
|
| 374 |
|
| 375 |
LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
|
| 376 |
env, pin, level); |
| 377 |
cur_level = (env->irq_input_state >> pin) & 1;
|
| 378 |
/* Don't generate spurious events */
|
| 379 |
if ((cur_level == 1 && level == 0) || (cur_level == 0 && level != 0)) { |
| 380 |
switch (pin) {
|
| 381 |
case PPCE500_INPUT_MCK:
|
| 382 |
if (level) {
|
| 383 |
LOG_IRQ("%s: reset the PowerPC system\n",
|
| 384 |
__func__); |
| 385 |
qemu_system_reset_request(); |
| 386 |
} |
| 387 |
break;
|
| 388 |
case PPCE500_INPUT_RESET_CORE:
|
| 389 |
if (level) {
|
| 390 |
LOG_IRQ("%s: reset the PowerPC core\n", __func__);
|
| 391 |
ppc_set_irq(cpu, PPC_INTERRUPT_MCK, level); |
| 392 |
} |
| 393 |
break;
|
| 394 |
case PPCE500_INPUT_CINT:
|
| 395 |
/* Level sensitive - active high */
|
| 396 |
LOG_IRQ("%s: set the critical IRQ state to %d\n",
|
| 397 |
__func__, level); |
| 398 |
ppc_set_irq(cpu, PPC_INTERRUPT_CEXT, level); |
| 399 |
break;
|
| 400 |
case PPCE500_INPUT_INT:
|
| 401 |
/* Level sensitive - active high */
|
| 402 |
LOG_IRQ("%s: set the core IRQ state to %d\n",
|
| 403 |
__func__, level); |
| 404 |
ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level); |
| 405 |
break;
|
| 406 |
case PPCE500_INPUT_DEBUG:
|
| 407 |
/* Level sensitive - active high */
|
| 408 |
LOG_IRQ("%s: set the debug pin state to %d\n",
|
| 409 |
__func__, level); |
| 410 |
ppc_set_irq(cpu, PPC_INTERRUPT_DEBUG, level); |
| 411 |
break;
|
| 412 |
default:
|
| 413 |
/* Unknown pin - do nothing */
|
| 414 |
LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
|
| 415 |
return;
|
| 416 |
} |
| 417 |
if (level)
|
| 418 |
env->irq_input_state |= 1 << pin;
|
| 419 |
else
|
| 420 |
env->irq_input_state &= ~(1 << pin);
|
| 421 |
} |
| 422 |
} |
| 423 |
|
| 424 |
void ppce500_irq_init(CPUPPCState *env)
|
| 425 |
{
|
| 426 |
PowerPCCPU *cpu = ppc_env_get_cpu(env); |
| 427 |
|
| 428 |
env->irq_inputs = (void **)qemu_allocate_irqs(&ppce500_set_irq,
|
| 429 |
cpu, PPCE500_INPUT_NB); |
| 430 |
} |
| 431 |
|
| 432 |
/* Enable or Disable the E500 EPR capability */
|
| 433 |
void ppce500_set_mpic_proxy(bool enabled) |
| 434 |
{
|
| 435 |
CPUPPCState *env; |
| 436 |
|
| 437 |
for (env = first_cpu; env != NULL; env = env->next_cpu) { |
| 438 |
PowerPCCPU *cpu = ppc_env_get_cpu(env); |
| 439 |
CPUState *cs = CPU(cpu); |
| 440 |
|
| 441 |
env->mpic_proxy = enabled; |
| 442 |
if (kvm_enabled()) {
|
| 443 |
kvmppc_set_mpic_proxy(POWERPC_CPU(cs), enabled); |
| 444 |
} |
| 445 |
} |
| 446 |
} |
| 447 |
|
| 448 |
/*****************************************************************************/
|
| 449 |
/* PowerPC time base and decrementer emulation */
|
| 450 |
|
| 451 |
uint64_t cpu_ppc_get_tb(ppc_tb_t *tb_env, uint64_t vmclk, int64_t tb_offset) |
| 452 |
{
|
| 453 |
/* TB time in tb periods */
|
| 454 |
return muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec()) + tb_offset;
|
| 455 |
} |
| 456 |
|
| 457 |
uint64_t cpu_ppc_load_tbl (CPUPPCState *env) |
| 458 |
{
|
| 459 |
ppc_tb_t *tb_env = env->tb_env; |
| 460 |
uint64_t tb; |
| 461 |
|
| 462 |
if (kvm_enabled()) {
|
| 463 |
return env->spr[SPR_TBL];
|
| 464 |
} |
| 465 |
|
| 466 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset); |
| 467 |
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb); |
| 468 |
|
| 469 |
return tb;
|
| 470 |
} |
| 471 |
|
| 472 |
static inline uint32_t _cpu_ppc_load_tbu(CPUPPCState *env) |
| 473 |
{
|
| 474 |
ppc_tb_t *tb_env = env->tb_env; |
| 475 |
uint64_t tb; |
| 476 |
|
| 477 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset); |
| 478 |
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb); |
| 479 |
|
| 480 |
return tb >> 32; |
| 481 |
} |
| 482 |
|
| 483 |
uint32_t cpu_ppc_load_tbu (CPUPPCState *env) |
| 484 |
{
|
| 485 |
if (kvm_enabled()) {
|
| 486 |
return env->spr[SPR_TBU];
|
| 487 |
} |
| 488 |
|
| 489 |
return _cpu_ppc_load_tbu(env);
|
| 490 |
} |
| 491 |
|
| 492 |
static inline void cpu_ppc_store_tb(ppc_tb_t *tb_env, uint64_t vmclk, |
| 493 |
int64_t *tb_offsetp, uint64_t value) |
| 494 |
{
|
| 495 |
*tb_offsetp = value - muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec()); |
| 496 |
LOG_TB("%s: tb %016" PRIx64 " offset %08" PRIx64 "\n", |
| 497 |
__func__, value, *tb_offsetp); |
| 498 |
} |
| 499 |
|
| 500 |
void cpu_ppc_store_tbl (CPUPPCState *env, uint32_t value)
|
| 501 |
{
|
| 502 |
ppc_tb_t *tb_env = env->tb_env; |
| 503 |
uint64_t tb; |
| 504 |
|
| 505 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset); |
| 506 |
tb &= 0xFFFFFFFF00000000ULL;
|
| 507 |
cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock), |
| 508 |
&tb_env->tb_offset, tb | (uint64_t)value); |
| 509 |
} |
| 510 |
|
| 511 |
static inline void _cpu_ppc_store_tbu(CPUPPCState *env, uint32_t value) |
| 512 |
{
|
| 513 |
ppc_tb_t *tb_env = env->tb_env; |
| 514 |
uint64_t tb; |
| 515 |
|
| 516 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset); |
| 517 |
tb &= 0x00000000FFFFFFFFULL;
|
| 518 |
cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock), |
| 519 |
&tb_env->tb_offset, ((uint64_t)value << 32) | tb);
|
| 520 |
} |
| 521 |
|
| 522 |
void cpu_ppc_store_tbu (CPUPPCState *env, uint32_t value)
|
| 523 |
{
|
| 524 |
_cpu_ppc_store_tbu(env, value); |
| 525 |
} |
| 526 |
|
| 527 |
uint64_t cpu_ppc_load_atbl (CPUPPCState *env) |
| 528 |
{
|
| 529 |
ppc_tb_t *tb_env = env->tb_env; |
| 530 |
uint64_t tb; |
| 531 |
|
| 532 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset); |
| 533 |
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb); |
| 534 |
|
| 535 |
return tb;
|
| 536 |
} |
| 537 |
|
| 538 |
uint32_t cpu_ppc_load_atbu (CPUPPCState *env) |
| 539 |
{
|
| 540 |
ppc_tb_t *tb_env = env->tb_env; |
| 541 |
uint64_t tb; |
| 542 |
|
| 543 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset); |
| 544 |
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb); |
| 545 |
|
| 546 |
return tb >> 32; |
| 547 |
} |
| 548 |
|
| 549 |
void cpu_ppc_store_atbl (CPUPPCState *env, uint32_t value)
|
| 550 |
{
|
| 551 |
ppc_tb_t *tb_env = env->tb_env; |
| 552 |
uint64_t tb; |
| 553 |
|
| 554 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset); |
| 555 |
tb &= 0xFFFFFFFF00000000ULL;
|
| 556 |
cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock), |
| 557 |
&tb_env->atb_offset, tb | (uint64_t)value); |
| 558 |
} |
| 559 |
|
| 560 |
void cpu_ppc_store_atbu (CPUPPCState *env, uint32_t value)
|
| 561 |
{
|
| 562 |
ppc_tb_t *tb_env = env->tb_env; |
| 563 |
uint64_t tb; |
| 564 |
|
| 565 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset); |
| 566 |
tb &= 0x00000000FFFFFFFFULL;
|
| 567 |
cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock), |
| 568 |
&tb_env->atb_offset, ((uint64_t)value << 32) | tb);
|
| 569 |
} |
| 570 |
|
| 571 |
static void cpu_ppc_tb_stop (CPUPPCState *env) |
| 572 |
{
|
| 573 |
ppc_tb_t *tb_env = env->tb_env; |
| 574 |
uint64_t tb, atb, vmclk; |
| 575 |
|
| 576 |
/* If the time base is already frozen, do nothing */
|
| 577 |
if (tb_env->tb_freq != 0) { |
| 578 |
vmclk = qemu_get_clock_ns(vm_clock); |
| 579 |
/* Get the time base */
|
| 580 |
tb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->tb_offset); |
| 581 |
/* Get the alternate time base */
|
| 582 |
atb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->atb_offset); |
| 583 |
/* Store the time base value (ie compute the current offset) */
|
| 584 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb); |
| 585 |
/* Store the alternate time base value (compute the current offset) */
|
| 586 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb); |
| 587 |
/* Set the time base frequency to zero */
|
| 588 |
tb_env->tb_freq = 0;
|
| 589 |
/* Now, the time bases are frozen to tb_offset / atb_offset value */
|
| 590 |
} |
| 591 |
} |
| 592 |
|
| 593 |
static void cpu_ppc_tb_start (CPUPPCState *env) |
| 594 |
{
|
| 595 |
ppc_tb_t *tb_env = env->tb_env; |
| 596 |
uint64_t tb, atb, vmclk; |
| 597 |
|
| 598 |
/* If the time base is not frozen, do nothing */
|
| 599 |
if (tb_env->tb_freq == 0) { |
| 600 |
vmclk = qemu_get_clock_ns(vm_clock); |
| 601 |
/* Get the time base from tb_offset */
|
| 602 |
tb = tb_env->tb_offset; |
| 603 |
/* Get the alternate time base from atb_offset */
|
| 604 |
atb = tb_env->atb_offset; |
| 605 |
/* Restore the tb frequency from the decrementer frequency */
|
| 606 |
tb_env->tb_freq = tb_env->decr_freq; |
| 607 |
/* Store the time base value */
|
| 608 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb); |
| 609 |
/* Store the alternate time base value */
|
| 610 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb); |
| 611 |
} |
| 612 |
} |
| 613 |
|
| 614 |
static inline uint32_t _cpu_ppc_load_decr(CPUPPCState *env, uint64_t next) |
| 615 |
{
|
| 616 |
ppc_tb_t *tb_env = env->tb_env; |
| 617 |
uint32_t decr; |
| 618 |
int64_t diff; |
| 619 |
|
| 620 |
diff = next - qemu_get_clock_ns(vm_clock); |
| 621 |
if (diff >= 0) { |
| 622 |
decr = muldiv64(diff, tb_env->decr_freq, get_ticks_per_sec()); |
| 623 |
} else if (tb_env->flags & PPC_TIMER_BOOKE) { |
| 624 |
decr = 0;
|
| 625 |
} else {
|
| 626 |
decr = -muldiv64(-diff, tb_env->decr_freq, get_ticks_per_sec()); |
| 627 |
} |
| 628 |
LOG_TB("%s: %08" PRIx32 "\n", __func__, decr); |
| 629 |
|
| 630 |
return decr;
|
| 631 |
} |
| 632 |
|
| 633 |
uint32_t cpu_ppc_load_decr (CPUPPCState *env) |
| 634 |
{
|
| 635 |
ppc_tb_t *tb_env = env->tb_env; |
| 636 |
|
| 637 |
if (kvm_enabled()) {
|
| 638 |
return env->spr[SPR_DECR];
|
| 639 |
} |
| 640 |
|
| 641 |
return _cpu_ppc_load_decr(env, tb_env->decr_next);
|
| 642 |
} |
| 643 |
|
| 644 |
uint32_t cpu_ppc_load_hdecr (CPUPPCState *env) |
| 645 |
{
|
| 646 |
ppc_tb_t *tb_env = env->tb_env; |
| 647 |
|
| 648 |
return _cpu_ppc_load_decr(env, tb_env->hdecr_next);
|
| 649 |
} |
| 650 |
|
| 651 |
uint64_t cpu_ppc_load_purr (CPUPPCState *env) |
| 652 |
{
|
| 653 |
ppc_tb_t *tb_env = env->tb_env; |
| 654 |
uint64_t diff; |
| 655 |
|
| 656 |
diff = qemu_get_clock_ns(vm_clock) - tb_env->purr_start; |
| 657 |
|
| 658 |
return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, get_ticks_per_sec());
|
| 659 |
} |
| 660 |
|
| 661 |
/* When decrementer expires,
|
| 662 |
* all we need to do is generate or queue a CPU exception
|
| 663 |
*/
|
| 664 |
static inline void cpu_ppc_decr_excp(PowerPCCPU *cpu) |
| 665 |
{
|
| 666 |
/* Raise it */
|
| 667 |
LOG_TB("raise decrementer exception\n");
|
| 668 |
ppc_set_irq(cpu, PPC_INTERRUPT_DECR, 1);
|
| 669 |
} |
| 670 |
|
| 671 |
static inline void cpu_ppc_hdecr_excp(PowerPCCPU *cpu) |
| 672 |
{
|
| 673 |
/* Raise it */
|
| 674 |
LOG_TB("raise decrementer exception\n");
|
| 675 |
ppc_set_irq(cpu, PPC_INTERRUPT_HDECR, 1);
|
| 676 |
} |
| 677 |
|
| 678 |
static void __cpu_ppc_store_decr(PowerPCCPU *cpu, uint64_t *nextp, |
| 679 |
struct QEMUTimer *timer,
|
| 680 |
void (*raise_excp)(PowerPCCPU *),
|
| 681 |
uint32_t decr, uint32_t value, |
| 682 |
int is_excp)
|
| 683 |
{
|
| 684 |
CPUPPCState *env = &cpu->env; |
| 685 |
ppc_tb_t *tb_env = env->tb_env; |
| 686 |
uint64_t now, next; |
| 687 |
|
| 688 |
LOG_TB("%s: %08" PRIx32 " => %08" PRIx32 "\n", __func__, |
| 689 |
decr, value); |
| 690 |
|
| 691 |
if (kvm_enabled()) {
|
| 692 |
/* KVM handles decrementer exceptions, we don't need our own timer */
|
| 693 |
return;
|
| 694 |
} |
| 695 |
|
| 696 |
now = qemu_get_clock_ns(vm_clock); |
| 697 |
next = now + muldiv64(value, get_ticks_per_sec(), tb_env->decr_freq); |
| 698 |
if (is_excp) {
|
| 699 |
next += *nextp - now; |
| 700 |
} |
| 701 |
if (next == now) {
|
| 702 |
next++; |
| 703 |
} |
| 704 |
*nextp = next; |
| 705 |
/* Adjust timer */
|
| 706 |
qemu_mod_timer(timer, next); |
| 707 |
|
| 708 |
/* If we set a negative value and the decrementer was positive, raise an
|
| 709 |
* exception.
|
| 710 |
*/
|
| 711 |
if ((tb_env->flags & PPC_DECR_UNDERFLOW_TRIGGERED)
|
| 712 |
&& (value & 0x80000000)
|
| 713 |
&& !(decr & 0x80000000)) {
|
| 714 |
(*raise_excp)(cpu); |
| 715 |
} |
| 716 |
} |
| 717 |
|
| 718 |
static inline void _cpu_ppc_store_decr(PowerPCCPU *cpu, uint32_t decr, |
| 719 |
uint32_t value, int is_excp)
|
| 720 |
{
|
| 721 |
ppc_tb_t *tb_env = cpu->env.tb_env; |
| 722 |
|
| 723 |
__cpu_ppc_store_decr(cpu, &tb_env->decr_next, tb_env->decr_timer, |
| 724 |
&cpu_ppc_decr_excp, decr, value, is_excp); |
| 725 |
} |
| 726 |
|
| 727 |
void cpu_ppc_store_decr (CPUPPCState *env, uint32_t value)
|
| 728 |
{
|
| 729 |
PowerPCCPU *cpu = ppc_env_get_cpu(env); |
| 730 |
|
| 731 |
_cpu_ppc_store_decr(cpu, cpu_ppc_load_decr(env), value, 0);
|
| 732 |
} |
| 733 |
|
| 734 |
static void cpu_ppc_decr_cb(void *opaque) |
| 735 |
{
|
| 736 |
PowerPCCPU *cpu = opaque; |
| 737 |
|
| 738 |
_cpu_ppc_store_decr(cpu, 0x00000000, 0xFFFFFFFF, 1); |
| 739 |
} |
| 740 |
|
| 741 |
static inline void _cpu_ppc_store_hdecr(PowerPCCPU *cpu, uint32_t hdecr, |
| 742 |
uint32_t value, int is_excp)
|
| 743 |
{
|
| 744 |
ppc_tb_t *tb_env = cpu->env.tb_env; |
| 745 |
|
| 746 |
if (tb_env->hdecr_timer != NULL) { |
| 747 |
__cpu_ppc_store_decr(cpu, &tb_env->hdecr_next, tb_env->hdecr_timer, |
| 748 |
&cpu_ppc_hdecr_excp, hdecr, value, is_excp); |
| 749 |
} |
| 750 |
} |
| 751 |
|
| 752 |
void cpu_ppc_store_hdecr (CPUPPCState *env, uint32_t value)
|
| 753 |
{
|
| 754 |
PowerPCCPU *cpu = ppc_env_get_cpu(env); |
| 755 |
|
| 756 |
_cpu_ppc_store_hdecr(cpu, cpu_ppc_load_hdecr(env), value, 0);
|
| 757 |
} |
| 758 |
|
| 759 |
static void cpu_ppc_hdecr_cb(void *opaque) |
| 760 |
{
|
| 761 |
PowerPCCPU *cpu = opaque; |
| 762 |
|
| 763 |
_cpu_ppc_store_hdecr(cpu, 0x00000000, 0xFFFFFFFF, 1); |
| 764 |
} |
| 765 |
|
| 766 |
static void cpu_ppc_store_purr(PowerPCCPU *cpu, uint64_t value) |
| 767 |
{
|
| 768 |
ppc_tb_t *tb_env = cpu->env.tb_env; |
| 769 |
|
| 770 |
tb_env->purr_load = value; |
| 771 |
tb_env->purr_start = qemu_get_clock_ns(vm_clock); |
| 772 |
} |
| 773 |
|
| 774 |
static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq) |
| 775 |
{
|
| 776 |
CPUPPCState *env = opaque; |
| 777 |
PowerPCCPU *cpu = ppc_env_get_cpu(env); |
| 778 |
ppc_tb_t *tb_env = env->tb_env; |
| 779 |
|
| 780 |
tb_env->tb_freq = freq; |
| 781 |
tb_env->decr_freq = freq; |
| 782 |
/* There is a bug in Linux 2.4 kernels:
|
| 783 |
* if a decrementer exception is pending when it enables msr_ee at startup,
|
| 784 |
* it's not ready to handle it...
|
| 785 |
*/
|
| 786 |
_cpu_ppc_store_decr(cpu, 0xFFFFFFFF, 0xFFFFFFFF, 0); |
| 787 |
_cpu_ppc_store_hdecr(cpu, 0xFFFFFFFF, 0xFFFFFFFF, 0); |
| 788 |
cpu_ppc_store_purr(cpu, 0x0000000000000000ULL);
|
| 789 |
} |
| 790 |
|
| 791 |
/* Set up (once) timebase frequency (in Hz) */
|
| 792 |
clk_setup_cb cpu_ppc_tb_init (CPUPPCState *env, uint32_t freq) |
| 793 |
{
|
| 794 |
PowerPCCPU *cpu = ppc_env_get_cpu(env); |
| 795 |
ppc_tb_t *tb_env; |
| 796 |
|
| 797 |
tb_env = g_malloc0(sizeof(ppc_tb_t));
|
| 798 |
env->tb_env = tb_env; |
| 799 |
tb_env->flags = PPC_DECR_UNDERFLOW_TRIGGERED; |
| 800 |
/* Create new timer */
|
| 801 |
tb_env->decr_timer = qemu_new_timer_ns(vm_clock, &cpu_ppc_decr_cb, cpu); |
| 802 |
if (0) { |
| 803 |
/* XXX: find a suitable condition to enable the hypervisor decrementer
|
| 804 |
*/
|
| 805 |
tb_env->hdecr_timer = qemu_new_timer_ns(vm_clock, &cpu_ppc_hdecr_cb, |
| 806 |
cpu); |
| 807 |
} else {
|
| 808 |
tb_env->hdecr_timer = NULL;
|
| 809 |
} |
| 810 |
cpu_ppc_set_tb_clk(env, freq); |
| 811 |
|
| 812 |
return &cpu_ppc_set_tb_clk;
|
| 813 |
} |
| 814 |
|
| 815 |
/* Specific helpers for POWER & PowerPC 601 RTC */
|
| 816 |
#if 0
|
| 817 |
static clk_setup_cb cpu_ppc601_rtc_init (CPUPPCState *env)
|
| 818 |
{
|
| 819 |
return cpu_ppc_tb_init(env, 7812500);
|
| 820 |
}
|
| 821 |
#endif
|
| 822 |
|
| 823 |
void cpu_ppc601_store_rtcu (CPUPPCState *env, uint32_t value)
|
| 824 |
{
|
| 825 |
_cpu_ppc_store_tbu(env, value); |
| 826 |
} |
| 827 |
|
| 828 |
uint32_t cpu_ppc601_load_rtcu (CPUPPCState *env) |
| 829 |
{
|
| 830 |
return _cpu_ppc_load_tbu(env);
|
| 831 |
} |
| 832 |
|
| 833 |
void cpu_ppc601_store_rtcl (CPUPPCState *env, uint32_t value)
|
| 834 |
{
|
| 835 |
cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
|
| 836 |
} |
| 837 |
|
| 838 |
uint32_t cpu_ppc601_load_rtcl (CPUPPCState *env) |
| 839 |
{
|
| 840 |
return cpu_ppc_load_tbl(env) & 0x3FFFFF80; |
| 841 |
} |
| 842 |
|
| 843 |
/*****************************************************************************/
|
| 844 |
/* PowerPC 40x timers */
|
| 845 |
|
| 846 |
/* PIT, FIT & WDT */
|
| 847 |
typedef struct ppc40x_timer_t ppc40x_timer_t; |
| 848 |
struct ppc40x_timer_t {
|
| 849 |
uint64_t pit_reload; /* PIT auto-reload value */
|
| 850 |
uint64_t fit_next; /* Tick for next FIT interrupt */
|
| 851 |
struct QEMUTimer *fit_timer;
|
| 852 |
uint64_t wdt_next; /* Tick for next WDT interrupt */
|
| 853 |
struct QEMUTimer *wdt_timer;
|
| 854 |
|
| 855 |
/* 405 have the PIT, 440 have a DECR. */
|
| 856 |
unsigned int decr_excp; |
| 857 |
}; |
| 858 |
|
| 859 |
/* Fixed interval timer */
|
| 860 |
static void cpu_4xx_fit_cb (void *opaque) |
| 861 |
{
|
| 862 |
PowerPCCPU *cpu; |
| 863 |
CPUPPCState *env; |
| 864 |
ppc_tb_t *tb_env; |
| 865 |
ppc40x_timer_t *ppc40x_timer; |
| 866 |
uint64_t now, next; |
| 867 |
|
| 868 |
env = opaque; |
| 869 |
cpu = ppc_env_get_cpu(env); |
| 870 |
tb_env = env->tb_env; |
| 871 |
ppc40x_timer = tb_env->opaque; |
| 872 |
now = qemu_get_clock_ns(vm_clock); |
| 873 |
switch ((env->spr[SPR_40x_TCR] >> 24) & 0x3) { |
| 874 |
case 0: |
| 875 |
next = 1 << 9; |
| 876 |
break;
|
| 877 |
case 1: |
| 878 |
next = 1 << 13; |
| 879 |
break;
|
| 880 |
case 2: |
| 881 |
next = 1 << 17; |
| 882 |
break;
|
| 883 |
case 3: |
| 884 |
next = 1 << 21; |
| 885 |
break;
|
| 886 |
default:
|
| 887 |
/* Cannot occur, but makes gcc happy */
|
| 888 |
return;
|
| 889 |
} |
| 890 |
next = now + muldiv64(next, get_ticks_per_sec(), tb_env->tb_freq); |
| 891 |
if (next == now)
|
| 892 |
next++; |
| 893 |
qemu_mod_timer(ppc40x_timer->fit_timer, next); |
| 894 |
env->spr[SPR_40x_TSR] |= 1 << 26; |
| 895 |
if ((env->spr[SPR_40x_TCR] >> 23) & 0x1) { |
| 896 |
ppc_set_irq(cpu, PPC_INTERRUPT_FIT, 1);
|
| 897 |
} |
| 898 |
LOG_TB("%s: ir %d TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx "\n", __func__, |
| 899 |
(int)((env->spr[SPR_40x_TCR] >> 23) & 0x1), |
| 900 |
env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]); |
| 901 |
} |
| 902 |
|
| 903 |
/* Programmable interval timer */
|
| 904 |
static void start_stop_pit (CPUPPCState *env, ppc_tb_t *tb_env, int is_excp) |
| 905 |
{
|
| 906 |
ppc40x_timer_t *ppc40x_timer; |
| 907 |
uint64_t now, next; |
| 908 |
|
| 909 |
ppc40x_timer = tb_env->opaque; |
| 910 |
if (ppc40x_timer->pit_reload <= 1 || |
| 911 |
!((env->spr[SPR_40x_TCR] >> 26) & 0x1) || |
| 912 |
(is_excp && !((env->spr[SPR_40x_TCR] >> 22) & 0x1))) { |
| 913 |
/* Stop PIT */
|
| 914 |
LOG_TB("%s: stop PIT\n", __func__);
|
| 915 |
qemu_del_timer(tb_env->decr_timer); |
| 916 |
} else {
|
| 917 |
LOG_TB("%s: start PIT %016" PRIx64 "\n", |
| 918 |
__func__, ppc40x_timer->pit_reload); |
| 919 |
now = qemu_get_clock_ns(vm_clock); |
| 920 |
next = now + muldiv64(ppc40x_timer->pit_reload, |
| 921 |
get_ticks_per_sec(), tb_env->decr_freq); |
| 922 |
if (is_excp)
|
| 923 |
next += tb_env->decr_next - now; |
| 924 |
if (next == now)
|
| 925 |
next++; |
| 926 |
qemu_mod_timer(tb_env->decr_timer, next); |
| 927 |
tb_env->decr_next = next; |
| 928 |
} |
| 929 |
} |
| 930 |
|
| 931 |
static void cpu_4xx_pit_cb (void *opaque) |
| 932 |
{
|
| 933 |
PowerPCCPU *cpu; |
| 934 |
CPUPPCState *env; |
| 935 |
ppc_tb_t *tb_env; |
| 936 |
ppc40x_timer_t *ppc40x_timer; |
| 937 |
|
| 938 |
env = opaque; |
| 939 |
cpu = ppc_env_get_cpu(env); |
| 940 |
tb_env = env->tb_env; |
| 941 |
ppc40x_timer = tb_env->opaque; |
| 942 |
env->spr[SPR_40x_TSR] |= 1 << 27; |
| 943 |
if ((env->spr[SPR_40x_TCR] >> 26) & 0x1) { |
| 944 |
ppc_set_irq(cpu, ppc40x_timer->decr_excp, 1);
|
| 945 |
} |
| 946 |
start_stop_pit(env, tb_env, 1);
|
| 947 |
LOG_TB("%s: ar %d ir %d TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx " " |
| 948 |
"%016" PRIx64 "\n", __func__, |
| 949 |
(int)((env->spr[SPR_40x_TCR] >> 22) & 0x1), |
| 950 |
(int)((env->spr[SPR_40x_TCR] >> 26) & 0x1), |
| 951 |
env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR], |
| 952 |
ppc40x_timer->pit_reload); |
| 953 |
} |
| 954 |
|
| 955 |
/* Watchdog timer */
|
| 956 |
static void cpu_4xx_wdt_cb (void *opaque) |
| 957 |
{
|
| 958 |
PowerPCCPU *cpu; |
| 959 |
CPUPPCState *env; |
| 960 |
ppc_tb_t *tb_env; |
| 961 |
ppc40x_timer_t *ppc40x_timer; |
| 962 |
uint64_t now, next; |
| 963 |
|
| 964 |
env = opaque; |
| 965 |
cpu = ppc_env_get_cpu(env); |
| 966 |
tb_env = env->tb_env; |
| 967 |
ppc40x_timer = tb_env->opaque; |
| 968 |
now = qemu_get_clock_ns(vm_clock); |
| 969 |
switch ((env->spr[SPR_40x_TCR] >> 30) & 0x3) { |
| 970 |
case 0: |
| 971 |
next = 1 << 17; |
| 972 |
break;
|
| 973 |
case 1: |
| 974 |
next = 1 << 21; |
| 975 |
break;
|
| 976 |
case 2: |
| 977 |
next = 1 << 25; |
| 978 |
break;
|
| 979 |
case 3: |
| 980 |
next = 1 << 29; |
| 981 |
break;
|
| 982 |
default:
|
| 983 |
/* Cannot occur, but makes gcc happy */
|
| 984 |
return;
|
| 985 |
} |
| 986 |
next = now + muldiv64(next, get_ticks_per_sec(), tb_env->decr_freq); |
| 987 |
if (next == now)
|
| 988 |
next++; |
| 989 |
LOG_TB("%s: TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx "\n", __func__, |
| 990 |
env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]); |
| 991 |
switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) { |
| 992 |
case 0x0: |
| 993 |
case 0x1: |
| 994 |
qemu_mod_timer(ppc40x_timer->wdt_timer, next); |
| 995 |
ppc40x_timer->wdt_next = next; |
| 996 |
env->spr[SPR_40x_TSR] |= 1 << 31; |
| 997 |
break;
|
| 998 |
case 0x2: |
| 999 |
qemu_mod_timer(ppc40x_timer->wdt_timer, next); |
| 1000 |
ppc40x_timer->wdt_next = next; |
| 1001 |
env->spr[SPR_40x_TSR] |= 1 << 30; |
| 1002 |
if ((env->spr[SPR_40x_TCR] >> 27) & 0x1) { |
| 1003 |
ppc_set_irq(cpu, PPC_INTERRUPT_WDT, 1);
|
| 1004 |
} |
| 1005 |
break;
|
| 1006 |
case 0x3: |
| 1007 |
env->spr[SPR_40x_TSR] &= ~0x30000000;
|
| 1008 |
env->spr[SPR_40x_TSR] |= env->spr[SPR_40x_TCR] & 0x30000000;
|
| 1009 |
switch ((env->spr[SPR_40x_TCR] >> 28) & 0x3) { |
| 1010 |
case 0x0: |
| 1011 |
/* No reset */
|
| 1012 |
break;
|
| 1013 |
case 0x1: /* Core reset */ |
| 1014 |
ppc40x_core_reset(cpu); |
| 1015 |
break;
|
| 1016 |
case 0x2: /* Chip reset */ |
| 1017 |
ppc40x_chip_reset(cpu); |
| 1018 |
break;
|
| 1019 |
case 0x3: /* System reset */ |
| 1020 |
ppc40x_system_reset(cpu); |
| 1021 |
break;
|
| 1022 |
} |
| 1023 |
} |
| 1024 |
} |
| 1025 |
|
| 1026 |
void store_40x_pit (CPUPPCState *env, target_ulong val)
|
| 1027 |
{
|
| 1028 |
ppc_tb_t *tb_env; |
| 1029 |
ppc40x_timer_t *ppc40x_timer; |
| 1030 |
|
| 1031 |
tb_env = env->tb_env; |
| 1032 |
ppc40x_timer = tb_env->opaque; |
| 1033 |
LOG_TB("%s val" TARGET_FMT_lx "\n", __func__, val); |
| 1034 |
ppc40x_timer->pit_reload = val; |
| 1035 |
start_stop_pit(env, tb_env, 0);
|
| 1036 |
} |
| 1037 |
|
| 1038 |
target_ulong load_40x_pit (CPUPPCState *env) |
| 1039 |
{
|
| 1040 |
return cpu_ppc_load_decr(env);
|
| 1041 |
} |
| 1042 |
|
| 1043 |
static void ppc_40x_set_tb_clk (void *opaque, uint32_t freq) |
| 1044 |
{
|
| 1045 |
CPUPPCState *env = opaque; |
| 1046 |
ppc_tb_t *tb_env = env->tb_env; |
| 1047 |
|
| 1048 |
LOG_TB("%s set new frequency to %" PRIu32 "\n", __func__, |
| 1049 |
freq); |
| 1050 |
tb_env->tb_freq = freq; |
| 1051 |
tb_env->decr_freq = freq; |
| 1052 |
/* XXX: we should also update all timers */
|
| 1053 |
} |
| 1054 |
|
| 1055 |
clk_setup_cb ppc_40x_timers_init (CPUPPCState *env, uint32_t freq, |
| 1056 |
unsigned int decr_excp) |
| 1057 |
{
|
| 1058 |
ppc_tb_t *tb_env; |
| 1059 |
ppc40x_timer_t *ppc40x_timer; |
| 1060 |
|
| 1061 |
tb_env = g_malloc0(sizeof(ppc_tb_t));
|
| 1062 |
env->tb_env = tb_env; |
| 1063 |
tb_env->flags = PPC_DECR_UNDERFLOW_TRIGGERED; |
| 1064 |
ppc40x_timer = g_malloc0(sizeof(ppc40x_timer_t));
|
| 1065 |
tb_env->tb_freq = freq; |
| 1066 |
tb_env->decr_freq = freq; |
| 1067 |
tb_env->opaque = ppc40x_timer; |
| 1068 |
LOG_TB("%s freq %" PRIu32 "\n", __func__, freq); |
| 1069 |
if (ppc40x_timer != NULL) { |
| 1070 |
/* We use decr timer for PIT */
|
| 1071 |
tb_env->decr_timer = qemu_new_timer_ns(vm_clock, &cpu_4xx_pit_cb, env); |
| 1072 |
ppc40x_timer->fit_timer = |
| 1073 |
qemu_new_timer_ns(vm_clock, &cpu_4xx_fit_cb, env); |
| 1074 |
ppc40x_timer->wdt_timer = |
| 1075 |
qemu_new_timer_ns(vm_clock, &cpu_4xx_wdt_cb, env); |
| 1076 |
ppc40x_timer->decr_excp = decr_excp; |
| 1077 |
} |
| 1078 |
|
| 1079 |
return &ppc_40x_set_tb_clk;
|
| 1080 |
} |
| 1081 |
|
| 1082 |
/*****************************************************************************/
|
| 1083 |
/* Embedded PowerPC Device Control Registers */
|
| 1084 |
typedef struct ppc_dcrn_t ppc_dcrn_t; |
| 1085 |
struct ppc_dcrn_t {
|
| 1086 |
dcr_read_cb dcr_read; |
| 1087 |
dcr_write_cb dcr_write; |
| 1088 |
void *opaque;
|
| 1089 |
}; |
| 1090 |
|
| 1091 |
/* XXX: on 460, DCR addresses are 32 bits wide,
|
| 1092 |
* using DCRIPR to get the 22 upper bits of the DCR address
|
| 1093 |
*/
|
| 1094 |
#define DCRN_NB 1024 |
| 1095 |
struct ppc_dcr_t {
|
| 1096 |
ppc_dcrn_t dcrn[DCRN_NB]; |
| 1097 |
int (*read_error)(int dcrn); |
| 1098 |
int (*write_error)(int dcrn); |
| 1099 |
}; |
| 1100 |
|
| 1101 |
int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp) |
| 1102 |
{
|
| 1103 |
ppc_dcrn_t *dcr; |
| 1104 |
|
| 1105 |
if (dcrn < 0 || dcrn >= DCRN_NB) |
| 1106 |
goto error;
|
| 1107 |
dcr = &dcr_env->dcrn[dcrn]; |
| 1108 |
if (dcr->dcr_read == NULL) |
| 1109 |
goto error;
|
| 1110 |
*valp = (*dcr->dcr_read)(dcr->opaque, dcrn); |
| 1111 |
|
| 1112 |
return 0; |
| 1113 |
|
| 1114 |
error:
|
| 1115 |
if (dcr_env->read_error != NULL) |
| 1116 |
return (*dcr_env->read_error)(dcrn);
|
| 1117 |
|
| 1118 |
return -1; |
| 1119 |
} |
| 1120 |
|
| 1121 |
int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val) |
| 1122 |
{
|
| 1123 |
ppc_dcrn_t *dcr; |
| 1124 |
|
| 1125 |
if (dcrn < 0 || dcrn >= DCRN_NB) |
| 1126 |
goto error;
|
| 1127 |
dcr = &dcr_env->dcrn[dcrn]; |
| 1128 |
if (dcr->dcr_write == NULL) |
| 1129 |
goto error;
|
| 1130 |
(*dcr->dcr_write)(dcr->opaque, dcrn, val); |
| 1131 |
|
| 1132 |
return 0; |
| 1133 |
|
| 1134 |
error:
|
| 1135 |
if (dcr_env->write_error != NULL) |
| 1136 |
return (*dcr_env->write_error)(dcrn);
|
| 1137 |
|
| 1138 |
return -1; |
| 1139 |
} |
| 1140 |
|
| 1141 |
int ppc_dcr_register (CPUPPCState *env, int dcrn, void *opaque, |
| 1142 |
dcr_read_cb dcr_read, dcr_write_cb dcr_write) |
| 1143 |
{
|
| 1144 |
ppc_dcr_t *dcr_env; |
| 1145 |
ppc_dcrn_t *dcr; |
| 1146 |
|
| 1147 |
dcr_env = env->dcr_env; |
| 1148 |
if (dcr_env == NULL) |
| 1149 |
return -1; |
| 1150 |
if (dcrn < 0 || dcrn >= DCRN_NB) |
| 1151 |
return -1; |
| 1152 |
dcr = &dcr_env->dcrn[dcrn]; |
| 1153 |
if (dcr->opaque != NULL || |
| 1154 |
dcr->dcr_read != NULL ||
|
| 1155 |
dcr->dcr_write != NULL)
|
| 1156 |
return -1; |
| 1157 |
dcr->opaque = opaque; |
| 1158 |
dcr->dcr_read = dcr_read; |
| 1159 |
dcr->dcr_write = dcr_write; |
| 1160 |
|
| 1161 |
return 0; |
| 1162 |
} |
| 1163 |
|
| 1164 |
int ppc_dcr_init (CPUPPCState *env, int (*read_error)(int dcrn), |
| 1165 |
int (*write_error)(int dcrn)) |
| 1166 |
{
|
| 1167 |
ppc_dcr_t *dcr_env; |
| 1168 |
|
| 1169 |
dcr_env = g_malloc0(sizeof(ppc_dcr_t));
|
| 1170 |
dcr_env->read_error = read_error; |
| 1171 |
dcr_env->write_error = write_error; |
| 1172 |
env->dcr_env = dcr_env; |
| 1173 |
|
| 1174 |
return 0; |
| 1175 |
} |
| 1176 |
|
| 1177 |
/*****************************************************************************/
|
| 1178 |
/* Debug port */
|
| 1179 |
void PPC_debug_write (void *opaque, uint32_t addr, uint32_t val) |
| 1180 |
{
|
| 1181 |
addr &= 0xF;
|
| 1182 |
switch (addr) {
|
| 1183 |
case 0: |
| 1184 |
printf("%c", val);
|
| 1185 |
break;
|
| 1186 |
case 1: |
| 1187 |
printf("\n");
|
| 1188 |
fflush(stdout); |
| 1189 |
break;
|
| 1190 |
case 2: |
| 1191 |
printf("Set loglevel to %04" PRIx32 "\n", val); |
| 1192 |
qemu_set_log(val | 0x100);
|
| 1193 |
break;
|
| 1194 |
} |
| 1195 |
} |
| 1196 |
|
| 1197 |
/*****************************************************************************/
|
| 1198 |
/* NVRAM helpers */
|
| 1199 |
static inline uint32_t nvram_read (nvram_t *nvram, uint32_t addr) |
| 1200 |
{
|
| 1201 |
return (*nvram->read_fn)(nvram->opaque, addr);
|
| 1202 |
} |
| 1203 |
|
| 1204 |
static inline void nvram_write (nvram_t *nvram, uint32_t addr, uint32_t val) |
| 1205 |
{
|
| 1206 |
(*nvram->write_fn)(nvram->opaque, addr, val); |
| 1207 |
} |
| 1208 |
|
| 1209 |
static void NVRAM_set_byte(nvram_t *nvram, uint32_t addr, uint8_t value) |
| 1210 |
{
|
| 1211 |
nvram_write(nvram, addr, value); |
| 1212 |
} |
| 1213 |
|
| 1214 |
static uint8_t NVRAM_get_byte(nvram_t *nvram, uint32_t addr)
|
| 1215 |
{
|
| 1216 |
return nvram_read(nvram, addr);
|
| 1217 |
} |
| 1218 |
|
| 1219 |
static void NVRAM_set_word(nvram_t *nvram, uint32_t addr, uint16_t value) |
| 1220 |
{
|
| 1221 |
nvram_write(nvram, addr, value >> 8);
|
| 1222 |
nvram_write(nvram, addr + 1, value & 0xFF); |
| 1223 |
} |
| 1224 |
|
| 1225 |
static uint16_t NVRAM_get_word(nvram_t *nvram, uint32_t addr)
|
| 1226 |
{
|
| 1227 |
uint16_t tmp; |
| 1228 |
|
| 1229 |
tmp = nvram_read(nvram, addr) << 8;
|
| 1230 |
tmp |= nvram_read(nvram, addr + 1);
|
| 1231 |
|
| 1232 |
return tmp;
|
| 1233 |
} |
| 1234 |
|
| 1235 |
static void NVRAM_set_lword(nvram_t *nvram, uint32_t addr, uint32_t value) |
| 1236 |
{
|
| 1237 |
nvram_write(nvram, addr, value >> 24);
|
| 1238 |
nvram_write(nvram, addr + 1, (value >> 16) & 0xFF); |
| 1239 |
nvram_write(nvram, addr + 2, (value >> 8) & 0xFF); |
| 1240 |
nvram_write(nvram, addr + 3, value & 0xFF); |
| 1241 |
} |
| 1242 |
|
| 1243 |
uint32_t NVRAM_get_lword (nvram_t *nvram, uint32_t addr) |
| 1244 |
{
|
| 1245 |
uint32_t tmp; |
| 1246 |
|
| 1247 |
tmp = nvram_read(nvram, addr) << 24;
|
| 1248 |
tmp |= nvram_read(nvram, addr + 1) << 16; |
| 1249 |
tmp |= nvram_read(nvram, addr + 2) << 8; |
| 1250 |
tmp |= nvram_read(nvram, addr + 3);
|
| 1251 |
|
| 1252 |
return tmp;
|
| 1253 |
} |
| 1254 |
|
| 1255 |
static void NVRAM_set_string(nvram_t *nvram, uint32_t addr, const char *str, |
| 1256 |
uint32_t max) |
| 1257 |
{
|
| 1258 |
int i;
|
| 1259 |
|
| 1260 |
for (i = 0; i < max && str[i] != '\0'; i++) { |
| 1261 |
nvram_write(nvram, addr + i, str[i]); |
| 1262 |
} |
| 1263 |
nvram_write(nvram, addr + i, str[i]); |
| 1264 |
nvram_write(nvram, addr + max - 1, '\0'); |
| 1265 |
} |
| 1266 |
|
| 1267 |
int NVRAM_get_string (nvram_t *nvram, uint8_t *dst, uint16_t addr, int max) |
| 1268 |
{
|
| 1269 |
int i;
|
| 1270 |
|
| 1271 |
memset(dst, 0, max);
|
| 1272 |
for (i = 0; i < max; i++) { |
| 1273 |
dst[i] = NVRAM_get_byte(nvram, addr + i); |
| 1274 |
if (dst[i] == '\0') |
| 1275 |
break;
|
| 1276 |
} |
| 1277 |
|
| 1278 |
return i;
|
| 1279 |
} |
| 1280 |
|
| 1281 |
static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
|
| 1282 |
{
|
| 1283 |
uint16_t tmp; |
| 1284 |
uint16_t pd, pd1, pd2; |
| 1285 |
|
| 1286 |
tmp = prev >> 8;
|
| 1287 |
pd = prev ^ value; |
| 1288 |
pd1 = pd & 0x000F;
|
| 1289 |
pd2 = ((pd >> 4) & 0x000F) ^ pd1; |
| 1290 |
tmp ^= (pd1 << 3) | (pd1 << 8); |
| 1291 |
tmp ^= pd2 | (pd2 << 7) | (pd2 << 12); |
| 1292 |
|
| 1293 |
return tmp;
|
| 1294 |
} |
| 1295 |
|
| 1296 |
static uint16_t NVRAM_compute_crc (nvram_t *nvram, uint32_t start, uint32_t count)
|
| 1297 |
{
|
| 1298 |
uint32_t i; |
| 1299 |
uint16_t crc = 0xFFFF;
|
| 1300 |
int odd;
|
| 1301 |
|
| 1302 |
odd = count & 1;
|
| 1303 |
count &= ~1;
|
| 1304 |
for (i = 0; i != count; i++) { |
| 1305 |
crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i)); |
| 1306 |
} |
| 1307 |
if (odd) {
|
| 1308 |
crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
|
| 1309 |
} |
| 1310 |
|
| 1311 |
return crc;
|
| 1312 |
} |
| 1313 |
|
| 1314 |
#define CMDLINE_ADDR 0x017ff000 |
| 1315 |
|
| 1316 |
int PPC_NVRAM_set_params (nvram_t *nvram, uint16_t NVRAM_size,
|
| 1317 |
const char *arch, |
| 1318 |
uint32_t RAM_size, int boot_device,
|
| 1319 |
uint32_t kernel_image, uint32_t kernel_size, |
| 1320 |
const char *cmdline, |
| 1321 |
uint32_t initrd_image, uint32_t initrd_size, |
| 1322 |
uint32_t NVRAM_image, |
| 1323 |
int width, int height, int depth) |
| 1324 |
{
|
| 1325 |
uint16_t crc; |
| 1326 |
|
| 1327 |
/* Set parameters for Open Hack'Ware BIOS */
|
| 1328 |
NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16); |
| 1329 |
NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */ |
| 1330 |
NVRAM_set_word(nvram, 0x14, NVRAM_size);
|
| 1331 |
NVRAM_set_string(nvram, 0x20, arch, 16); |
| 1332 |
NVRAM_set_lword(nvram, 0x30, RAM_size);
|
| 1333 |
NVRAM_set_byte(nvram, 0x34, boot_device);
|
| 1334 |
NVRAM_set_lword(nvram, 0x38, kernel_image);
|
| 1335 |
NVRAM_set_lword(nvram, 0x3C, kernel_size);
|
| 1336 |
if (cmdline) {
|
| 1337 |
/* XXX: put the cmdline in NVRAM too ? */
|
| 1338 |
pstrcpy_targphys("cmdline", CMDLINE_ADDR, RAM_size - CMDLINE_ADDR, cmdline);
|
| 1339 |
NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
|
| 1340 |
NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
|
| 1341 |
} else {
|
| 1342 |
NVRAM_set_lword(nvram, 0x40, 0); |
| 1343 |
NVRAM_set_lword(nvram, 0x44, 0); |
| 1344 |
} |
| 1345 |
NVRAM_set_lword(nvram, 0x48, initrd_image);
|
| 1346 |
NVRAM_set_lword(nvram, 0x4C, initrd_size);
|
| 1347 |
NVRAM_set_lword(nvram, 0x50, NVRAM_image);
|
| 1348 |
|
| 1349 |
NVRAM_set_word(nvram, 0x54, width);
|
| 1350 |
NVRAM_set_word(nvram, 0x56, height);
|
| 1351 |
NVRAM_set_word(nvram, 0x58, depth);
|
| 1352 |
crc = NVRAM_compute_crc(nvram, 0x00, 0xF8); |
| 1353 |
NVRAM_set_word(nvram, 0xFC, crc);
|
| 1354 |
|
| 1355 |
return 0; |
| 1356 |
} |