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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.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 "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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void ppc_set_irq(CPUPPCState *env, int n_IRQ, int level) |
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{ |
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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(env, 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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CPUPPCState *env = opaque; |
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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(env, 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(env, 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(env, 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(env, 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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env->irq_inputs = (void **)qemu_allocate_irqs(&ppc6xx_set_irq, env,
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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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CPUPPCState *env = opaque; |
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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(env, 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(env, 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(env, 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(env); |
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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(env, 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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env->irq_inputs = (void **)qemu_allocate_irqs(&ppc970_set_irq, env,
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PPC970_INPUT_NB); |
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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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CPUPPCState *env = opaque; |
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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(env, 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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env->irq_inputs = (void **)qemu_allocate_irqs(&power7_set_irq, env,
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POWER7_INPUT_NB); |
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} |
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#endif /* defined(TARGET_PPC64) */ |
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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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CPUPPCState *env = opaque; |
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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(env); |
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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(env); |
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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(env); |
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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(env, 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(env, 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(env); |
329 |
} |
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break;
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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); |
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ppc_set_irq(env, PPC_INTERRUPT_DEBUG, 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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} |
342 |
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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} |
348 |
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void ppc40x_irq_init (CPUPPCState *env)
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{ |
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env->irq_inputs = (void **)qemu_allocate_irqs(&ppc40x_set_irq,
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env, PPC40x_INPUT_NB); |
353 |
} |
354 |
|
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/* PowerPC E500 internal IRQ controller */
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static void ppce500_set_irq (void *opaque, int pin, int level) |
357 |
{ |
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CPUPPCState *env = opaque; |
359 |
int cur_level;
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360 |
|
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LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
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env, pin, level); |
363 |
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)) { |
366 |
switch (pin) {
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367 |
case PPCE500_INPUT_MCK:
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368 |
if (level) {
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LOG_IRQ("%s: reset the PowerPC system\n",
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__func__); |
371 |
qemu_system_reset_request(); |
372 |
} |
373 |
break;
|
374 |
case PPCE500_INPUT_RESET_CORE:
|
375 |
if (level) {
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376 |
LOG_IRQ("%s: reset the PowerPC core\n", __func__);
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377 |
ppc_set_irq(env, PPC_INTERRUPT_MCK, level); |
378 |
} |
379 |
break;
|
380 |
case PPCE500_INPUT_CINT:
|
381 |
/* Level sensitive - active high */
|
382 |
LOG_IRQ("%s: set the critical IRQ state to %d\n",
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__func__, level); |
384 |
ppc_set_irq(env, PPC_INTERRUPT_CEXT, level); |
385 |
break;
|
386 |
case PPCE500_INPUT_INT:
|
387 |
/* Level sensitive - active high */
|
388 |
LOG_IRQ("%s: set the core IRQ state to %d\n",
|
389 |
__func__, level); |
390 |
ppc_set_irq(env, PPC_INTERRUPT_EXT, level); |
391 |
break;
|
392 |
case PPCE500_INPUT_DEBUG:
|
393 |
/* Level sensitive - active high */
|
394 |
LOG_IRQ("%s: set the debug pin state to %d\n",
|
395 |
__func__, level); |
396 |
ppc_set_irq(env, PPC_INTERRUPT_DEBUG, level); |
397 |
break;
|
398 |
default:
|
399 |
/* Unknown pin - do nothing */
|
400 |
LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
|
401 |
return;
|
402 |
} |
403 |
if (level)
|
404 |
env->irq_input_state |= 1 << pin;
|
405 |
else
|
406 |
env->irq_input_state &= ~(1 << pin);
|
407 |
} |
408 |
} |
409 |
|
410 |
void ppce500_irq_init (CPUPPCState *env)
|
411 |
{ |
412 |
env->irq_inputs = (void **)qemu_allocate_irqs(&ppce500_set_irq,
|
413 |
env, PPCE500_INPUT_NB); |
414 |
} |
415 |
/*****************************************************************************/
|
416 |
/* PowerPC time base and decrementer emulation */
|
417 |
|
418 |
uint64_t cpu_ppc_get_tb(ppc_tb_t *tb_env, uint64_t vmclk, int64_t tb_offset) |
419 |
{ |
420 |
/* TB time in tb periods */
|
421 |
return muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec()) + tb_offset;
|
422 |
} |
423 |
|
424 |
uint64_t cpu_ppc_load_tbl (CPUPPCState *env) |
425 |
{ |
426 |
ppc_tb_t *tb_env = env->tb_env; |
427 |
uint64_t tb; |
428 |
|
429 |
if (kvm_enabled()) {
|
430 |
return env->spr[SPR_TBL];
|
431 |
} |
432 |
|
433 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset); |
434 |
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb); |
435 |
|
436 |
return tb;
|
437 |
} |
438 |
|
439 |
static inline uint32_t _cpu_ppc_load_tbu(CPUPPCState *env) |
440 |
{ |
441 |
ppc_tb_t *tb_env = env->tb_env; |
442 |
uint64_t tb; |
443 |
|
444 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset); |
445 |
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb); |
446 |
|
447 |
return tb >> 32; |
448 |
} |
449 |
|
450 |
uint32_t cpu_ppc_load_tbu (CPUPPCState *env) |
451 |
{ |
452 |
if (kvm_enabled()) {
|
453 |
return env->spr[SPR_TBU];
|
454 |
} |
455 |
|
456 |
return _cpu_ppc_load_tbu(env);
|
457 |
} |
458 |
|
459 |
static inline void cpu_ppc_store_tb(ppc_tb_t *tb_env, uint64_t vmclk, |
460 |
int64_t *tb_offsetp, uint64_t value) |
461 |
{ |
462 |
*tb_offsetp = value - muldiv64(vmclk, tb_env->tb_freq, get_ticks_per_sec()); |
463 |
LOG_TB("%s: tb %016" PRIx64 " offset %08" PRIx64 "\n", |
464 |
__func__, value, *tb_offsetp); |
465 |
} |
466 |
|
467 |
void cpu_ppc_store_tbl (CPUPPCState *env, uint32_t value)
|
468 |
{ |
469 |
ppc_tb_t *tb_env = env->tb_env; |
470 |
uint64_t tb; |
471 |
|
472 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset); |
473 |
tb &= 0xFFFFFFFF00000000ULL;
|
474 |
cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock), |
475 |
&tb_env->tb_offset, tb | (uint64_t)value); |
476 |
} |
477 |
|
478 |
static inline void _cpu_ppc_store_tbu(CPUPPCState *env, uint32_t value) |
479 |
{ |
480 |
ppc_tb_t *tb_env = env->tb_env; |
481 |
uint64_t tb; |
482 |
|
483 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->tb_offset); |
484 |
tb &= 0x00000000FFFFFFFFULL;
|
485 |
cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock), |
486 |
&tb_env->tb_offset, ((uint64_t)value << 32) | tb);
|
487 |
} |
488 |
|
489 |
void cpu_ppc_store_tbu (CPUPPCState *env, uint32_t value)
|
490 |
{ |
491 |
_cpu_ppc_store_tbu(env, value); |
492 |
} |
493 |
|
494 |
uint64_t cpu_ppc_load_atbl (CPUPPCState *env) |
495 |
{ |
496 |
ppc_tb_t *tb_env = env->tb_env; |
497 |
uint64_t tb; |
498 |
|
499 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset); |
500 |
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb); |
501 |
|
502 |
return tb;
|
503 |
} |
504 |
|
505 |
uint32_t cpu_ppc_load_atbu (CPUPPCState *env) |
506 |
{ |
507 |
ppc_tb_t *tb_env = env->tb_env; |
508 |
uint64_t tb; |
509 |
|
510 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset); |
511 |
LOG_TB("%s: tb %016" PRIx64 "\n", __func__, tb); |
512 |
|
513 |
return tb >> 32; |
514 |
} |
515 |
|
516 |
void cpu_ppc_store_atbl (CPUPPCState *env, uint32_t value)
|
517 |
{ |
518 |
ppc_tb_t *tb_env = env->tb_env; |
519 |
uint64_t tb; |
520 |
|
521 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock_ns(vm_clock), tb_env->atb_offset); |
522 |
tb &= 0xFFFFFFFF00000000ULL;
|
523 |
cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock), |
524 |
&tb_env->atb_offset, tb | (uint64_t)value); |
525 |
} |
526 |
|
527 |
void cpu_ppc_store_atbu (CPUPPCState *env, uint32_t value)
|
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 |
tb &= 0x00000000FFFFFFFFULL;
|
534 |
cpu_ppc_store_tb(tb_env, qemu_get_clock_ns(vm_clock), |
535 |
&tb_env->atb_offset, ((uint64_t)value << 32) | tb);
|
536 |
} |
537 |
|
538 |
static void cpu_ppc_tb_stop (CPUPPCState *env) |
539 |
{ |
540 |
ppc_tb_t *tb_env = env->tb_env; |
541 |
uint64_t tb, atb, vmclk; |
542 |
|
543 |
/* If the time base is already frozen, do nothing */
|
544 |
if (tb_env->tb_freq != 0) { |
545 |
vmclk = qemu_get_clock_ns(vm_clock); |
546 |
/* Get the time base */
|
547 |
tb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->tb_offset); |
548 |
/* Get the alternate time base */
|
549 |
atb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->atb_offset); |
550 |
/* Store the time base value (ie compute the current offset) */
|
551 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb); |
552 |
/* Store the alternate time base value (compute the current offset) */
|
553 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb); |
554 |
/* Set the time base frequency to zero */
|
555 |
tb_env->tb_freq = 0;
|
556 |
/* Now, the time bases are frozen to tb_offset / atb_offset value */
|
557 |
} |
558 |
} |
559 |
|
560 |
static void cpu_ppc_tb_start (CPUPPCState *env) |
561 |
{ |
562 |
ppc_tb_t *tb_env = env->tb_env; |
563 |
uint64_t tb, atb, vmclk; |
564 |
|
565 |
/* If the time base is not frozen, do nothing */
|
566 |
if (tb_env->tb_freq == 0) { |
567 |
vmclk = qemu_get_clock_ns(vm_clock); |
568 |
/* Get the time base from tb_offset */
|
569 |
tb = tb_env->tb_offset; |
570 |
/* Get the alternate time base from atb_offset */
|
571 |
atb = tb_env->atb_offset; |
572 |
/* Restore the tb frequency from the decrementer frequency */
|
573 |
tb_env->tb_freq = tb_env->decr_freq; |
574 |
/* Store the time base value */
|
575 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb); |
576 |
/* Store the alternate time base value */
|
577 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb); |
578 |
} |
579 |
} |
580 |
|
581 |
static inline uint32_t _cpu_ppc_load_decr(CPUPPCState *env, uint64_t next) |
582 |
{ |
583 |
ppc_tb_t *tb_env = env->tb_env; |
584 |
uint32_t decr; |
585 |
int64_t diff; |
586 |
|
587 |
diff = next - qemu_get_clock_ns(vm_clock); |
588 |
if (diff >= 0) { |
589 |
decr = muldiv64(diff, tb_env->decr_freq, get_ticks_per_sec()); |
590 |
} else if (tb_env->flags & PPC_TIMER_BOOKE) { |
591 |
decr = 0;
|
592 |
} else {
|
593 |
decr = -muldiv64(-diff, tb_env->decr_freq, get_ticks_per_sec()); |
594 |
} |
595 |
LOG_TB("%s: %08" PRIx32 "\n", __func__, decr); |
596 |
|
597 |
return decr;
|
598 |
} |
599 |
|
600 |
uint32_t cpu_ppc_load_decr (CPUPPCState *env) |
601 |
{ |
602 |
ppc_tb_t *tb_env = env->tb_env; |
603 |
|
604 |
if (kvm_enabled()) {
|
605 |
return env->spr[SPR_DECR];
|
606 |
} |
607 |
|
608 |
return _cpu_ppc_load_decr(env, tb_env->decr_next);
|
609 |
} |
610 |
|
611 |
uint32_t cpu_ppc_load_hdecr (CPUPPCState *env) |
612 |
{ |
613 |
ppc_tb_t *tb_env = env->tb_env; |
614 |
|
615 |
return _cpu_ppc_load_decr(env, tb_env->hdecr_next);
|
616 |
} |
617 |
|
618 |
uint64_t cpu_ppc_load_purr (CPUPPCState *env) |
619 |
{ |
620 |
ppc_tb_t *tb_env = env->tb_env; |
621 |
uint64_t diff; |
622 |
|
623 |
diff = qemu_get_clock_ns(vm_clock) - tb_env->purr_start; |
624 |
|
625 |
return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, get_ticks_per_sec());
|
626 |
} |
627 |
|
628 |
/* When decrementer expires,
|
629 |
* all we need to do is generate or queue a CPU exception
|
630 |
*/
|
631 |
static inline void cpu_ppc_decr_excp(CPUPPCState *env) |
632 |
{ |
633 |
/* Raise it */
|
634 |
LOG_TB("raise decrementer exception\n");
|
635 |
ppc_set_irq(env, PPC_INTERRUPT_DECR, 1);
|
636 |
} |
637 |
|
638 |
static inline void cpu_ppc_hdecr_excp(CPUPPCState *env) |
639 |
{ |
640 |
/* Raise it */
|
641 |
LOG_TB("raise decrementer exception\n");
|
642 |
ppc_set_irq(env, PPC_INTERRUPT_HDECR, 1);
|
643 |
} |
644 |
|
645 |
static void __cpu_ppc_store_decr (CPUPPCState *env, uint64_t *nextp, |
646 |
struct QEMUTimer *timer,
|
647 |
void (*raise_excp)(CPUPPCState *),
|
648 |
uint32_t decr, uint32_t value, |
649 |
int is_excp)
|
650 |
{ |
651 |
ppc_tb_t *tb_env = env->tb_env; |
652 |
uint64_t now, next; |
653 |
|
654 |
LOG_TB("%s: %08" PRIx32 " => %08" PRIx32 "\n", __func__, |
655 |
decr, value); |
656 |
|
657 |
if (kvm_enabled()) {
|
658 |
/* KVM handles decrementer exceptions, we don't need our own timer */
|
659 |
return;
|
660 |
} |
661 |
|
662 |
now = qemu_get_clock_ns(vm_clock); |
663 |
next = now + muldiv64(value, get_ticks_per_sec(), tb_env->decr_freq); |
664 |
if (is_excp) {
|
665 |
next += *nextp - now; |
666 |
} |
667 |
if (next == now) {
|
668 |
next++; |
669 |
} |
670 |
*nextp = next; |
671 |
/* Adjust timer */
|
672 |
qemu_mod_timer(timer, next); |
673 |
|
674 |
/* If we set a negative value and the decrementer was positive, raise an
|
675 |
* exception.
|
676 |
*/
|
677 |
if ((tb_env->flags & PPC_DECR_UNDERFLOW_TRIGGERED)
|
678 |
&& (value & 0x80000000)
|
679 |
&& !(decr & 0x80000000)) {
|
680 |
(*raise_excp)(env); |
681 |
} |
682 |
} |
683 |
|
684 |
static inline void _cpu_ppc_store_decr(CPUPPCState *env, uint32_t decr, |
685 |
uint32_t value, int is_excp)
|
686 |
{ |
687 |
ppc_tb_t *tb_env = env->tb_env; |
688 |
|
689 |
__cpu_ppc_store_decr(env, &tb_env->decr_next, tb_env->decr_timer, |
690 |
&cpu_ppc_decr_excp, decr, value, is_excp); |
691 |
} |
692 |
|
693 |
void cpu_ppc_store_decr (CPUPPCState *env, uint32_t value)
|
694 |
{ |
695 |
_cpu_ppc_store_decr(env, cpu_ppc_load_decr(env), value, 0);
|
696 |
} |
697 |
|
698 |
static void cpu_ppc_decr_cb (void *opaque) |
699 |
{ |
700 |
_cpu_ppc_store_decr(opaque, 0x00000000, 0xFFFFFFFF, 1); |
701 |
} |
702 |
|
703 |
static inline void _cpu_ppc_store_hdecr(CPUPPCState *env, uint32_t hdecr, |
704 |
uint32_t value, int is_excp)
|
705 |
{ |
706 |
ppc_tb_t *tb_env = env->tb_env; |
707 |
|
708 |
if (tb_env->hdecr_timer != NULL) { |
709 |
__cpu_ppc_store_decr(env, &tb_env->hdecr_next, tb_env->hdecr_timer, |
710 |
&cpu_ppc_hdecr_excp, hdecr, value, is_excp); |
711 |
} |
712 |
} |
713 |
|
714 |
void cpu_ppc_store_hdecr (CPUPPCState *env, uint32_t value)
|
715 |
{ |
716 |
_cpu_ppc_store_hdecr(env, cpu_ppc_load_hdecr(env), value, 0);
|
717 |
} |
718 |
|
719 |
static void cpu_ppc_hdecr_cb (void *opaque) |
720 |
{ |
721 |
_cpu_ppc_store_hdecr(opaque, 0x00000000, 0xFFFFFFFF, 1); |
722 |
} |
723 |
|
724 |
void cpu_ppc_store_purr (CPUPPCState *env, uint64_t value)
|
725 |
{ |
726 |
ppc_tb_t *tb_env = env->tb_env; |
727 |
|
728 |
tb_env->purr_load = value; |
729 |
tb_env->purr_start = qemu_get_clock_ns(vm_clock); |
730 |
} |
731 |
|
732 |
static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq) |
733 |
{ |
734 |
CPUPPCState *env = opaque; |
735 |
ppc_tb_t *tb_env = env->tb_env; |
736 |
|
737 |
tb_env->tb_freq = freq; |
738 |
tb_env->decr_freq = freq; |
739 |
/* There is a bug in Linux 2.4 kernels:
|
740 |
* if a decrementer exception is pending when it enables msr_ee at startup,
|
741 |
* it's not ready to handle it...
|
742 |
*/
|
743 |
_cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0); |
744 |
_cpu_ppc_store_hdecr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0); |
745 |
cpu_ppc_store_purr(env, 0x0000000000000000ULL);
|
746 |
} |
747 |
|
748 |
/* Set up (once) timebase frequency (in Hz) */
|
749 |
clk_setup_cb cpu_ppc_tb_init (CPUPPCState *env, uint32_t freq) |
750 |
{ |
751 |
ppc_tb_t *tb_env; |
752 |
|
753 |
tb_env = g_malloc0(sizeof(ppc_tb_t));
|
754 |
env->tb_env = tb_env; |
755 |
tb_env->flags = PPC_DECR_UNDERFLOW_TRIGGERED; |
756 |
/* Create new timer */
|
757 |
tb_env->decr_timer = qemu_new_timer_ns(vm_clock, &cpu_ppc_decr_cb, env); |
758 |
if (0) { |
759 |
/* XXX: find a suitable condition to enable the hypervisor decrementer
|
760 |
*/
|
761 |
tb_env->hdecr_timer = qemu_new_timer_ns(vm_clock, &cpu_ppc_hdecr_cb, env); |
762 |
} else {
|
763 |
tb_env->hdecr_timer = NULL;
|
764 |
} |
765 |
cpu_ppc_set_tb_clk(env, freq); |
766 |
|
767 |
return &cpu_ppc_set_tb_clk;
|
768 |
} |
769 |
|
770 |
/* Specific helpers for POWER & PowerPC 601 RTC */
|
771 |
#if 0
|
772 |
static clk_setup_cb cpu_ppc601_rtc_init (CPUPPCState *env)
|
773 |
{
|
774 |
return cpu_ppc_tb_init(env, 7812500);
|
775 |
}
|
776 |
#endif
|
777 |
|
778 |
void cpu_ppc601_store_rtcu (CPUPPCState *env, uint32_t value)
|
779 |
{ |
780 |
_cpu_ppc_store_tbu(env, value); |
781 |
} |
782 |
|
783 |
uint32_t cpu_ppc601_load_rtcu (CPUPPCState *env) |
784 |
{ |
785 |
return _cpu_ppc_load_tbu(env);
|
786 |
} |
787 |
|
788 |
void cpu_ppc601_store_rtcl (CPUPPCState *env, uint32_t value)
|
789 |
{ |
790 |
cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
|
791 |
} |
792 |
|
793 |
uint32_t cpu_ppc601_load_rtcl (CPUPPCState *env) |
794 |
{ |
795 |
return cpu_ppc_load_tbl(env) & 0x3FFFFF80; |
796 |
} |
797 |
|
798 |
/*****************************************************************************/
|
799 |
/* PowerPC 40x timers */
|
800 |
|
801 |
/* PIT, FIT & WDT */
|
802 |
typedef struct ppc40x_timer_t ppc40x_timer_t; |
803 |
struct ppc40x_timer_t {
|
804 |
uint64_t pit_reload; /* PIT auto-reload value */
|
805 |
uint64_t fit_next; /* Tick for next FIT interrupt */
|
806 |
struct QEMUTimer *fit_timer;
|
807 |
uint64_t wdt_next; /* Tick for next WDT interrupt */
|
808 |
struct QEMUTimer *wdt_timer;
|
809 |
|
810 |
/* 405 have the PIT, 440 have a DECR. */
|
811 |
unsigned int decr_excp; |
812 |
}; |
813 |
|
814 |
/* Fixed interval timer */
|
815 |
static void cpu_4xx_fit_cb (void *opaque) |
816 |
{ |
817 |
CPUPPCState *env; |
818 |
ppc_tb_t *tb_env; |
819 |
ppc40x_timer_t *ppc40x_timer; |
820 |
uint64_t now, next; |
821 |
|
822 |
env = opaque; |
823 |
tb_env = env->tb_env; |
824 |
ppc40x_timer = tb_env->opaque; |
825 |
now = qemu_get_clock_ns(vm_clock); |
826 |
switch ((env->spr[SPR_40x_TCR] >> 24) & 0x3) { |
827 |
case 0: |
828 |
next = 1 << 9; |
829 |
break;
|
830 |
case 1: |
831 |
next = 1 << 13; |
832 |
break;
|
833 |
case 2: |
834 |
next = 1 << 17; |
835 |
break;
|
836 |
case 3: |
837 |
next = 1 << 21; |
838 |
break;
|
839 |
default:
|
840 |
/* Cannot occur, but makes gcc happy */
|
841 |
return;
|
842 |
} |
843 |
next = now + muldiv64(next, get_ticks_per_sec(), tb_env->tb_freq); |
844 |
if (next == now)
|
845 |
next++; |
846 |
qemu_mod_timer(ppc40x_timer->fit_timer, next); |
847 |
env->spr[SPR_40x_TSR] |= 1 << 26; |
848 |
if ((env->spr[SPR_40x_TCR] >> 23) & 0x1) |
849 |
ppc_set_irq(env, PPC_INTERRUPT_FIT, 1);
|
850 |
LOG_TB("%s: ir %d TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx "\n", __func__, |
851 |
(int)((env->spr[SPR_40x_TCR] >> 23) & 0x1), |
852 |
env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]); |
853 |
} |
854 |
|
855 |
/* Programmable interval timer */
|
856 |
static void start_stop_pit (CPUPPCState *env, ppc_tb_t *tb_env, int is_excp) |
857 |
{ |
858 |
ppc40x_timer_t *ppc40x_timer; |
859 |
uint64_t now, next; |
860 |
|
861 |
ppc40x_timer = tb_env->opaque; |
862 |
if (ppc40x_timer->pit_reload <= 1 || |
863 |
!((env->spr[SPR_40x_TCR] >> 26) & 0x1) || |
864 |
(is_excp && !((env->spr[SPR_40x_TCR] >> 22) & 0x1))) { |
865 |
/* Stop PIT */
|
866 |
LOG_TB("%s: stop PIT\n", __func__);
|
867 |
qemu_del_timer(tb_env->decr_timer); |
868 |
} else {
|
869 |
LOG_TB("%s: start PIT %016" PRIx64 "\n", |
870 |
__func__, ppc40x_timer->pit_reload); |
871 |
now = qemu_get_clock_ns(vm_clock); |
872 |
next = now + muldiv64(ppc40x_timer->pit_reload, |
873 |
get_ticks_per_sec(), tb_env->decr_freq); |
874 |
if (is_excp)
|
875 |
next += tb_env->decr_next - now; |
876 |
if (next == now)
|
877 |
next++; |
878 |
qemu_mod_timer(tb_env->decr_timer, next); |
879 |
tb_env->decr_next = next; |
880 |
} |
881 |
} |
882 |
|
883 |
static void cpu_4xx_pit_cb (void *opaque) |
884 |
{ |
885 |
CPUPPCState *env; |
886 |
ppc_tb_t *tb_env; |
887 |
ppc40x_timer_t *ppc40x_timer; |
888 |
|
889 |
env = opaque; |
890 |
tb_env = env->tb_env; |
891 |
ppc40x_timer = tb_env->opaque; |
892 |
env->spr[SPR_40x_TSR] |= 1 << 27; |
893 |
if ((env->spr[SPR_40x_TCR] >> 26) & 0x1) |
894 |
ppc_set_irq(env, ppc40x_timer->decr_excp, 1);
|
895 |
start_stop_pit(env, tb_env, 1);
|
896 |
LOG_TB("%s: ar %d ir %d TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx " " |
897 |
"%016" PRIx64 "\n", __func__, |
898 |
(int)((env->spr[SPR_40x_TCR] >> 22) & 0x1), |
899 |
(int)((env->spr[SPR_40x_TCR] >> 26) & 0x1), |
900 |
env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR], |
901 |
ppc40x_timer->pit_reload); |
902 |
} |
903 |
|
904 |
/* Watchdog timer */
|
905 |
static void cpu_4xx_wdt_cb (void *opaque) |
906 |
{ |
907 |
CPUPPCState *env; |
908 |
ppc_tb_t *tb_env; |
909 |
ppc40x_timer_t *ppc40x_timer; |
910 |
uint64_t now, next; |
911 |
|
912 |
env = opaque; |
913 |
tb_env = env->tb_env; |
914 |
ppc40x_timer = tb_env->opaque; |
915 |
now = qemu_get_clock_ns(vm_clock); |
916 |
switch ((env->spr[SPR_40x_TCR] >> 30) & 0x3) { |
917 |
case 0: |
918 |
next = 1 << 17; |
919 |
break;
|
920 |
case 1: |
921 |
next = 1 << 21; |
922 |
break;
|
923 |
case 2: |
924 |
next = 1 << 25; |
925 |
break;
|
926 |
case 3: |
927 |
next = 1 << 29; |
928 |
break;
|
929 |
default:
|
930 |
/* Cannot occur, but makes gcc happy */
|
931 |
return;
|
932 |
} |
933 |
next = now + muldiv64(next, get_ticks_per_sec(), tb_env->decr_freq); |
934 |
if (next == now)
|
935 |
next++; |
936 |
LOG_TB("%s: TCR " TARGET_FMT_lx " TSR " TARGET_FMT_lx "\n", __func__, |
937 |
env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]); |
938 |
switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) { |
939 |
case 0x0: |
940 |
case 0x1: |
941 |
qemu_mod_timer(ppc40x_timer->wdt_timer, next); |
942 |
ppc40x_timer->wdt_next = next; |
943 |
env->spr[SPR_40x_TSR] |= 1 << 31; |
944 |
break;
|
945 |
case 0x2: |
946 |
qemu_mod_timer(ppc40x_timer->wdt_timer, next); |
947 |
ppc40x_timer->wdt_next = next; |
948 |
env->spr[SPR_40x_TSR] |= 1 << 30; |
949 |
if ((env->spr[SPR_40x_TCR] >> 27) & 0x1) |
950 |
ppc_set_irq(env, PPC_INTERRUPT_WDT, 1);
|
951 |
break;
|
952 |
case 0x3: |
953 |
env->spr[SPR_40x_TSR] &= ~0x30000000;
|
954 |
env->spr[SPR_40x_TSR] |= env->spr[SPR_40x_TCR] & 0x30000000;
|
955 |
switch ((env->spr[SPR_40x_TCR] >> 28) & 0x3) { |
956 |
case 0x0: |
957 |
/* No reset */
|
958 |
break;
|
959 |
case 0x1: /* Core reset */ |
960 |
ppc40x_core_reset(env); |
961 |
break;
|
962 |
case 0x2: /* Chip reset */ |
963 |
ppc40x_chip_reset(env); |
964 |
break;
|
965 |
case 0x3: /* System reset */ |
966 |
ppc40x_system_reset(env); |
967 |
break;
|
968 |
} |
969 |
} |
970 |
} |
971 |
|
972 |
void store_40x_pit (CPUPPCState *env, target_ulong val)
|
973 |
{ |
974 |
ppc_tb_t *tb_env; |
975 |
ppc40x_timer_t *ppc40x_timer; |
976 |
|
977 |
tb_env = env->tb_env; |
978 |
ppc40x_timer = tb_env->opaque; |
979 |
LOG_TB("%s val" TARGET_FMT_lx "\n", __func__, val); |
980 |
ppc40x_timer->pit_reload = val; |
981 |
start_stop_pit(env, tb_env, 0);
|
982 |
} |
983 |
|
984 |
target_ulong load_40x_pit (CPUPPCState *env) |
985 |
{ |
986 |
return cpu_ppc_load_decr(env);
|
987 |
} |
988 |
|
989 |
static void ppc_40x_set_tb_clk (void *opaque, uint32_t freq) |
990 |
{ |
991 |
CPUPPCState *env = opaque; |
992 |
ppc_tb_t *tb_env = env->tb_env; |
993 |
|
994 |
LOG_TB("%s set new frequency to %" PRIu32 "\n", __func__, |
995 |
freq); |
996 |
tb_env->tb_freq = freq; |
997 |
tb_env->decr_freq = freq; |
998 |
/* XXX: we should also update all timers */
|
999 |
} |
1000 |
|
1001 |
clk_setup_cb ppc_40x_timers_init (CPUPPCState *env, uint32_t freq, |
1002 |
unsigned int decr_excp) |
1003 |
{ |
1004 |
ppc_tb_t *tb_env; |
1005 |
ppc40x_timer_t *ppc40x_timer; |
1006 |
|
1007 |
tb_env = g_malloc0(sizeof(ppc_tb_t));
|
1008 |
env->tb_env = tb_env; |
1009 |
tb_env->flags = PPC_DECR_UNDERFLOW_TRIGGERED; |
1010 |
ppc40x_timer = g_malloc0(sizeof(ppc40x_timer_t));
|
1011 |
tb_env->tb_freq = freq; |
1012 |
tb_env->decr_freq = freq; |
1013 |
tb_env->opaque = ppc40x_timer; |
1014 |
LOG_TB("%s freq %" PRIu32 "\n", __func__, freq); |
1015 |
if (ppc40x_timer != NULL) { |
1016 |
/* We use decr timer for PIT */
|
1017 |
tb_env->decr_timer = qemu_new_timer_ns(vm_clock, &cpu_4xx_pit_cb, env); |
1018 |
ppc40x_timer->fit_timer = |
1019 |
qemu_new_timer_ns(vm_clock, &cpu_4xx_fit_cb, env); |
1020 |
ppc40x_timer->wdt_timer = |
1021 |
qemu_new_timer_ns(vm_clock, &cpu_4xx_wdt_cb, env); |
1022 |
ppc40x_timer->decr_excp = decr_excp; |
1023 |
} |
1024 |
|
1025 |
return &ppc_40x_set_tb_clk;
|
1026 |
} |
1027 |
|
1028 |
/*****************************************************************************/
|
1029 |
/* Embedded PowerPC Device Control Registers */
|
1030 |
typedef struct ppc_dcrn_t ppc_dcrn_t; |
1031 |
struct ppc_dcrn_t {
|
1032 |
dcr_read_cb dcr_read; |
1033 |
dcr_write_cb dcr_write; |
1034 |
void *opaque;
|
1035 |
}; |
1036 |
|
1037 |
/* XXX: on 460, DCR addresses are 32 bits wide,
|
1038 |
* using DCRIPR to get the 22 upper bits of the DCR address
|
1039 |
*/
|
1040 |
#define DCRN_NB 1024 |
1041 |
struct ppc_dcr_t {
|
1042 |
ppc_dcrn_t dcrn[DCRN_NB]; |
1043 |
int (*read_error)(int dcrn); |
1044 |
int (*write_error)(int dcrn); |
1045 |
}; |
1046 |
|
1047 |
int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, uint32_t *valp) |
1048 |
{ |
1049 |
ppc_dcrn_t *dcr; |
1050 |
|
1051 |
if (dcrn < 0 || dcrn >= DCRN_NB) |
1052 |
goto error;
|
1053 |
dcr = &dcr_env->dcrn[dcrn]; |
1054 |
if (dcr->dcr_read == NULL) |
1055 |
goto error;
|
1056 |
*valp = (*dcr->dcr_read)(dcr->opaque, dcrn); |
1057 |
|
1058 |
return 0; |
1059 |
|
1060 |
error:
|
1061 |
if (dcr_env->read_error != NULL) |
1062 |
return (*dcr_env->read_error)(dcrn);
|
1063 |
|
1064 |
return -1; |
1065 |
} |
1066 |
|
1067 |
int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val) |
1068 |
{ |
1069 |
ppc_dcrn_t *dcr; |
1070 |
|
1071 |
if (dcrn < 0 || dcrn >= DCRN_NB) |
1072 |
goto error;
|
1073 |
dcr = &dcr_env->dcrn[dcrn]; |
1074 |
if (dcr->dcr_write == NULL) |
1075 |
goto error;
|
1076 |
(*dcr->dcr_write)(dcr->opaque, dcrn, val); |
1077 |
|
1078 |
return 0; |
1079 |
|
1080 |
error:
|
1081 |
if (dcr_env->write_error != NULL) |
1082 |
return (*dcr_env->write_error)(dcrn);
|
1083 |
|
1084 |
return -1; |
1085 |
} |
1086 |
|
1087 |
int ppc_dcr_register (CPUPPCState *env, int dcrn, void *opaque, |
1088 |
dcr_read_cb dcr_read, dcr_write_cb dcr_write) |
1089 |
{ |
1090 |
ppc_dcr_t *dcr_env; |
1091 |
ppc_dcrn_t *dcr; |
1092 |
|
1093 |
dcr_env = env->dcr_env; |
1094 |
if (dcr_env == NULL) |
1095 |
return -1; |
1096 |
if (dcrn < 0 || dcrn >= DCRN_NB) |
1097 |
return -1; |
1098 |
dcr = &dcr_env->dcrn[dcrn]; |
1099 |
if (dcr->opaque != NULL || |
1100 |
dcr->dcr_read != NULL ||
|
1101 |
dcr->dcr_write != NULL)
|
1102 |
return -1; |
1103 |
dcr->opaque = opaque; |
1104 |
dcr->dcr_read = dcr_read; |
1105 |
dcr->dcr_write = dcr_write; |
1106 |
|
1107 |
return 0; |
1108 |
} |
1109 |
|
1110 |
int ppc_dcr_init (CPUPPCState *env, int (*read_error)(int dcrn), |
1111 |
int (*write_error)(int dcrn)) |
1112 |
{ |
1113 |
ppc_dcr_t *dcr_env; |
1114 |
|
1115 |
dcr_env = g_malloc0(sizeof(ppc_dcr_t));
|
1116 |
dcr_env->read_error = read_error; |
1117 |
dcr_env->write_error = write_error; |
1118 |
env->dcr_env = dcr_env; |
1119 |
|
1120 |
return 0; |
1121 |
} |
1122 |
|
1123 |
/*****************************************************************************/
|
1124 |
/* Debug port */
|
1125 |
void PPC_debug_write (void *opaque, uint32_t addr, uint32_t val) |
1126 |
{ |
1127 |
addr &= 0xF;
|
1128 |
switch (addr) {
|
1129 |
case 0: |
1130 |
printf("%c", val);
|
1131 |
break;
|
1132 |
case 1: |
1133 |
printf("\n");
|
1134 |
fflush(stdout); |
1135 |
break;
|
1136 |
case 2: |
1137 |
printf("Set loglevel to %04" PRIx32 "\n", val); |
1138 |
cpu_set_log(val | 0x100);
|
1139 |
break;
|
1140 |
} |
1141 |
} |
1142 |
|
1143 |
/*****************************************************************************/
|
1144 |
/* NVRAM helpers */
|
1145 |
static inline uint32_t nvram_read (nvram_t *nvram, uint32_t addr) |
1146 |
{ |
1147 |
return (*nvram->read_fn)(nvram->opaque, addr);
|
1148 |
} |
1149 |
|
1150 |
static inline void nvram_write (nvram_t *nvram, uint32_t addr, uint32_t val) |
1151 |
{ |
1152 |
(*nvram->write_fn)(nvram->opaque, addr, val); |
1153 |
} |
1154 |
|
1155 |
void NVRAM_set_byte (nvram_t *nvram, uint32_t addr, uint8_t value)
|
1156 |
{ |
1157 |
nvram_write(nvram, addr, value); |
1158 |
} |
1159 |
|
1160 |
uint8_t NVRAM_get_byte (nvram_t *nvram, uint32_t addr) |
1161 |
{ |
1162 |
return nvram_read(nvram, addr);
|
1163 |
} |
1164 |
|
1165 |
void NVRAM_set_word (nvram_t *nvram, uint32_t addr, uint16_t value)
|
1166 |
{ |
1167 |
nvram_write(nvram, addr, value >> 8);
|
1168 |
nvram_write(nvram, addr + 1, value & 0xFF); |
1169 |
} |
1170 |
|
1171 |
uint16_t NVRAM_get_word (nvram_t *nvram, uint32_t addr) |
1172 |
{ |
1173 |
uint16_t tmp; |
1174 |
|
1175 |
tmp = nvram_read(nvram, addr) << 8;
|
1176 |
tmp |= nvram_read(nvram, addr + 1);
|
1177 |
|
1178 |
return tmp;
|
1179 |
} |
1180 |
|
1181 |
void NVRAM_set_lword (nvram_t *nvram, uint32_t addr, uint32_t value)
|
1182 |
{ |
1183 |
nvram_write(nvram, addr, value >> 24);
|
1184 |
nvram_write(nvram, addr + 1, (value >> 16) & 0xFF); |
1185 |
nvram_write(nvram, addr + 2, (value >> 8) & 0xFF); |
1186 |
nvram_write(nvram, addr + 3, value & 0xFF); |
1187 |
} |
1188 |
|
1189 |
uint32_t NVRAM_get_lword (nvram_t *nvram, uint32_t addr) |
1190 |
{ |
1191 |
uint32_t tmp; |
1192 |
|
1193 |
tmp = nvram_read(nvram, addr) << 24;
|
1194 |
tmp |= nvram_read(nvram, addr + 1) << 16; |
1195 |
tmp |= nvram_read(nvram, addr + 2) << 8; |
1196 |
tmp |= nvram_read(nvram, addr + 3);
|
1197 |
|
1198 |
return tmp;
|
1199 |
} |
1200 |
|
1201 |
void NVRAM_set_string (nvram_t *nvram, uint32_t addr,
|
1202 |
const char *str, uint32_t max) |
1203 |
{ |
1204 |
int i;
|
1205 |
|
1206 |
for (i = 0; i < max && str[i] != '\0'; i++) { |
1207 |
nvram_write(nvram, addr + i, str[i]); |
1208 |
} |
1209 |
nvram_write(nvram, addr + i, str[i]); |
1210 |
nvram_write(nvram, addr + max - 1, '\0'); |
1211 |
} |
1212 |
|
1213 |
int NVRAM_get_string (nvram_t *nvram, uint8_t *dst, uint16_t addr, int max) |
1214 |
{ |
1215 |
int i;
|
1216 |
|
1217 |
memset(dst, 0, max);
|
1218 |
for (i = 0; i < max; i++) { |
1219 |
dst[i] = NVRAM_get_byte(nvram, addr + i); |
1220 |
if (dst[i] == '\0') |
1221 |
break;
|
1222 |
} |
1223 |
|
1224 |
return i;
|
1225 |
} |
1226 |
|
1227 |
static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
|
1228 |
{ |
1229 |
uint16_t tmp; |
1230 |
uint16_t pd, pd1, pd2; |
1231 |
|
1232 |
tmp = prev >> 8;
|
1233 |
pd = prev ^ value; |
1234 |
pd1 = pd & 0x000F;
|
1235 |
pd2 = ((pd >> 4) & 0x000F) ^ pd1; |
1236 |
tmp ^= (pd1 << 3) | (pd1 << 8); |
1237 |
tmp ^= pd2 | (pd2 << 7) | (pd2 << 12); |
1238 |
|
1239 |
return tmp;
|
1240 |
} |
1241 |
|
1242 |
static uint16_t NVRAM_compute_crc (nvram_t *nvram, uint32_t start, uint32_t count)
|
1243 |
{ |
1244 |
uint32_t i; |
1245 |
uint16_t crc = 0xFFFF;
|
1246 |
int odd;
|
1247 |
|
1248 |
odd = count & 1;
|
1249 |
count &= ~1;
|
1250 |
for (i = 0; i != count; i++) { |
1251 |
crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i)); |
1252 |
} |
1253 |
if (odd) {
|
1254 |
crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
|
1255 |
} |
1256 |
|
1257 |
return crc;
|
1258 |
} |
1259 |
|
1260 |
#define CMDLINE_ADDR 0x017ff000 |
1261 |
|
1262 |
int PPC_NVRAM_set_params (nvram_t *nvram, uint16_t NVRAM_size,
|
1263 |
const char *arch, |
1264 |
uint32_t RAM_size, int boot_device,
|
1265 |
uint32_t kernel_image, uint32_t kernel_size, |
1266 |
const char *cmdline, |
1267 |
uint32_t initrd_image, uint32_t initrd_size, |
1268 |
uint32_t NVRAM_image, |
1269 |
int width, int height, int depth) |
1270 |
{ |
1271 |
uint16_t crc; |
1272 |
|
1273 |
/* Set parameters for Open Hack'Ware BIOS */
|
1274 |
NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16); |
1275 |
NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */ |
1276 |
NVRAM_set_word(nvram, 0x14, NVRAM_size);
|
1277 |
NVRAM_set_string(nvram, 0x20, arch, 16); |
1278 |
NVRAM_set_lword(nvram, 0x30, RAM_size);
|
1279 |
NVRAM_set_byte(nvram, 0x34, boot_device);
|
1280 |
NVRAM_set_lword(nvram, 0x38, kernel_image);
|
1281 |
NVRAM_set_lword(nvram, 0x3C, kernel_size);
|
1282 |
if (cmdline) {
|
1283 |
/* XXX: put the cmdline in NVRAM too ? */
|
1284 |
pstrcpy_targphys("cmdline", CMDLINE_ADDR, RAM_size - CMDLINE_ADDR, cmdline);
|
1285 |
NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
|
1286 |
NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
|
1287 |
} else {
|
1288 |
NVRAM_set_lword(nvram, 0x40, 0); |
1289 |
NVRAM_set_lword(nvram, 0x44, 0); |
1290 |
} |
1291 |
NVRAM_set_lword(nvram, 0x48, initrd_image);
|
1292 |
NVRAM_set_lword(nvram, 0x4C, initrd_size);
|
1293 |
NVRAM_set_lword(nvram, 0x50, NVRAM_image);
|
1294 |
|
1295 |
NVRAM_set_word(nvram, 0x54, width);
|
1296 |
NVRAM_set_word(nvram, 0x56, height);
|
1297 |
NVRAM_set_word(nvram, 0x58, depth);
|
1298 |
crc = NVRAM_compute_crc(nvram, 0x00, 0xF8); |
1299 |
NVRAM_set_word(nvram, 0xFC, crc);
|
1300 |
|
1301 |
return 0; |
1302 |
} |