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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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//#define PPC_DEBUG_IRQ
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//#define PPC_DEBUG_TB
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extern FILE *logfile;
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extern int loglevel; |
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static void cpu_ppc_tb_stop (CPUState *env); |
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static void cpu_ppc_tb_start (CPUState *env); |
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static void ppc_set_irq (CPUState *env, int n_IRQ, int level) |
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{ |
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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 defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%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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#endif
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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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CPUState *env = opaque; |
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int cur_level;
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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: env %p pin %d level %d\n", __func__,
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env, pin, level); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: %s the time base\n",
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__func__, level ? "start" : "stop"); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: set the external IRQ state to %d\n",
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__func__, level); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: set the SMI IRQ state to %d\n",
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__func__, level); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: raise machine check state\n",
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__func__); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: stop the CPU\n", __func__);
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: reset the CPU\n", __func__);
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} |
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#endif
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env->interrupt_request |= CPU_INTERRUPT_EXITTB; |
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/* XXX: TOFIX */
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#if 0
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cpu_ppc_reset(env);
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#else
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qemu_system_reset_request(); |
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#endif
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} |
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break;
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case PPC6xx_INPUT_SRESET:
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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: set the RESET IRQ state to %d\n",
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__func__, level); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: unknown IRQ pin %d\n", __func__, pin);
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} |
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#endif
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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 (CPUState *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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CPUState *env = opaque; |
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int cur_level;
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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: env %p pin %d level %d\n", __func__,
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env, pin, level); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: set the external IRQ state to %d\n",
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__func__, level); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: set the SMI IRQ state to %d\n", __func__,
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level); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: raise machine check state\n",
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__func__); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: stop the CPU\n", __func__);
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} |
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#endif
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env->halted = 1;
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} else {
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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: restart the CPU\n", __func__);
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} |
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#endif
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env->halted = 0;
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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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#if 0 // XXX: TOFIX
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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: reset the CPU\n", __func__);
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}
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#endif
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cpu_reset(env); |
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#endif
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} |
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break;
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case PPC970_INPUT_SRESET:
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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: set the RESET IRQ state to %d\n",
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__func__, level); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: set the TBEN state to %d\n", __func__,
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level); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: unknown IRQ pin %d\n", __func__, pin);
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} |
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#endif
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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 (CPUState *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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#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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CPUState *env = opaque; |
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int cur_level;
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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: env %p pin %d level %d\n", __func__,
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env, pin, level); |
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} |
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#endif
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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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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: reset the PowerPC system\n",
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__func__); |
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} |
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#endif
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ppc40x_system_reset(env); |
333 |
} |
334 |
break;
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case PPC40x_INPUT_RESET_CHIP:
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if (level) {
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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: reset the PowerPC chip\n", __func__);
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} |
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#endif
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ppc40x_chip_reset(env); |
343 |
} |
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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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#if defined(PPC_DEBUG_IRQ)
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349 |
if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: reset the PowerPC core\n", __func__);
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} |
352 |
#endif
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ppc40x_core_reset(env); |
354 |
} |
355 |
break;
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case PPC40x_INPUT_CINT:
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/* Level sensitive - active high */
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#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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fprintf(logfile, "%s: set the critical IRQ state to %d\n",
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__func__, level); |
362 |
} |
363 |
#endif
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364 |
ppc_set_irq(env, PPC_INTERRUPT_CEXT, level); |
365 |
break;
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case PPC40x_INPUT_INT:
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/* Level sensitive - active high */
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368 |
#if defined(PPC_DEBUG_IRQ)
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if (loglevel & CPU_LOG_INT) {
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370 |
fprintf(logfile, "%s: set the external IRQ state to %d\n",
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__func__, level); |
372 |
} |
373 |
#endif
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374 |
ppc_set_irq(env, PPC_INTERRUPT_EXT, level); |
375 |
break;
|
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case PPC40x_INPUT_HALT:
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377 |
/* Level sensitive - active low */
|
378 |
if (level) {
|
379 |
#if defined(PPC_DEBUG_IRQ)
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380 |
if (loglevel & CPU_LOG_INT) {
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381 |
fprintf(logfile, "%s: stop the CPU\n", __func__);
|
382 |
} |
383 |
#endif
|
384 |
env->halted = 1;
|
385 |
} else {
|
386 |
#if defined(PPC_DEBUG_IRQ)
|
387 |
if (loglevel & CPU_LOG_INT) {
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388 |
fprintf(logfile, "%s: restart the CPU\n", __func__);
|
389 |
} |
390 |
#endif
|
391 |
env->halted = 0;
|
392 |
} |
393 |
break;
|
394 |
case PPC40x_INPUT_DEBUG:
|
395 |
/* Level sensitive - active high */
|
396 |
#if defined(PPC_DEBUG_IRQ)
|
397 |
if (loglevel & CPU_LOG_INT) {
|
398 |
fprintf(logfile, "%s: set the debug pin state to %d\n",
|
399 |
__func__, level); |
400 |
} |
401 |
#endif
|
402 |
ppc_set_irq(env, PPC_INTERRUPT_DEBUG, level); |
403 |
break;
|
404 |
default:
|
405 |
/* Unknown pin - do nothing */
|
406 |
#if defined(PPC_DEBUG_IRQ)
|
407 |
if (loglevel & CPU_LOG_INT) {
|
408 |
fprintf(logfile, "%s: unknown IRQ pin %d\n", __func__, pin);
|
409 |
} |
410 |
#endif
|
411 |
return;
|
412 |
} |
413 |
if (level)
|
414 |
env->irq_input_state |= 1 << pin;
|
415 |
else
|
416 |
env->irq_input_state &= ~(1 << pin);
|
417 |
} |
418 |
} |
419 |
|
420 |
void ppc40x_irq_init (CPUState *env)
|
421 |
{ |
422 |
env->irq_inputs = (void **)qemu_allocate_irqs(&ppc40x_set_irq,
|
423 |
env, PPC40x_INPUT_NB); |
424 |
} |
425 |
|
426 |
/*****************************************************************************/
|
427 |
/* PowerPC time base and decrementer emulation */
|
428 |
struct ppc_tb_t {
|
429 |
/* Time base management */
|
430 |
int64_t tb_offset; /* Compensation */
|
431 |
int64_t atb_offset; /* Compensation */
|
432 |
uint32_t tb_freq; /* TB frequency */
|
433 |
/* Decrementer management */
|
434 |
uint64_t decr_next; /* Tick for next decr interrupt */
|
435 |
uint32_t decr_freq; /* decrementer frequency */
|
436 |
struct QEMUTimer *decr_timer;
|
437 |
/* Hypervisor decrementer management */
|
438 |
uint64_t hdecr_next; /* Tick for next hdecr interrupt */
|
439 |
struct QEMUTimer *hdecr_timer;
|
440 |
uint64_t purr_load; |
441 |
uint64_t purr_start; |
442 |
void *opaque;
|
443 |
}; |
444 |
|
445 |
static always_inline uint64_t cpu_ppc_get_tb (ppc_tb_t *tb_env, uint64_t vmclk,
|
446 |
int64_t tb_offset) |
447 |
{ |
448 |
/* TB time in tb periods */
|
449 |
return muldiv64(vmclk, tb_env->tb_freq, ticks_per_sec) + tb_offset;
|
450 |
} |
451 |
|
452 |
uint32_t cpu_ppc_load_tbl (CPUState *env) |
453 |
{ |
454 |
ppc_tb_t *tb_env = env->tb_env; |
455 |
uint64_t tb; |
456 |
|
457 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->tb_offset); |
458 |
#if defined(PPC_DEBUG_TB)
|
459 |
if (loglevel != 0) { |
460 |
fprintf(logfile, "%s: tb %016" PRIx64 "\n", __func__, tb); |
461 |
} |
462 |
#endif
|
463 |
|
464 |
return tb & 0xFFFFFFFF; |
465 |
} |
466 |
|
467 |
static always_inline uint32_t _cpu_ppc_load_tbu (CPUState *env)
|
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(vm_clock), tb_env->tb_offset); |
473 |
#if defined(PPC_DEBUG_TB)
|
474 |
if (loglevel != 0) { |
475 |
fprintf(logfile, "%s: tb %016" PRIx64 "\n", __func__, tb); |
476 |
} |
477 |
#endif
|
478 |
|
479 |
return tb >> 32; |
480 |
} |
481 |
|
482 |
uint32_t cpu_ppc_load_tbu (CPUState *env) |
483 |
{ |
484 |
return _cpu_ppc_load_tbu(env);
|
485 |
} |
486 |
|
487 |
static always_inline void cpu_ppc_store_tb (ppc_tb_t *tb_env, uint64_t vmclk, |
488 |
int64_t *tb_offsetp, |
489 |
uint64_t value) |
490 |
{ |
491 |
*tb_offsetp = value - muldiv64(vmclk, tb_env->tb_freq, ticks_per_sec); |
492 |
#ifdef PPC_DEBUG_TB
|
493 |
if (loglevel != 0) { |
494 |
fprintf(logfile, "%s: tb %016" PRIx64 " offset %08" PRIx64 "\n", |
495 |
__func__, value, *tb_offsetp); |
496 |
} |
497 |
#endif
|
498 |
} |
499 |
|
500 |
void cpu_ppc_store_tbl (CPUState *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(vm_clock), tb_env->tb_offset); |
506 |
tb &= 0xFFFFFFFF00000000ULL;
|
507 |
cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock), |
508 |
&tb_env->tb_offset, tb | (uint64_t)value); |
509 |
} |
510 |
|
511 |
static always_inline void _cpu_ppc_store_tbu (CPUState *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(vm_clock), tb_env->tb_offset); |
517 |
tb &= 0x00000000FFFFFFFFULL;
|
518 |
cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock), |
519 |
&tb_env->tb_offset, ((uint64_t)value << 32) | tb);
|
520 |
} |
521 |
|
522 |
void cpu_ppc_store_tbu (CPUState *env, uint32_t value)
|
523 |
{ |
524 |
_cpu_ppc_store_tbu(env, value); |
525 |
} |
526 |
|
527 |
uint32_t cpu_ppc_load_atbl (CPUState *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(vm_clock), tb_env->atb_offset); |
533 |
#if defined(PPC_DEBUG_TB)
|
534 |
if (loglevel != 0) { |
535 |
fprintf(logfile, "%s: tb %016" PRIx64 "\n", __func__, tb); |
536 |
} |
537 |
#endif
|
538 |
|
539 |
return tb & 0xFFFFFFFF; |
540 |
} |
541 |
|
542 |
uint32_t cpu_ppc_load_atbu (CPUState *env) |
543 |
{ |
544 |
ppc_tb_t *tb_env = env->tb_env; |
545 |
uint64_t tb; |
546 |
|
547 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset); |
548 |
#if defined(PPC_DEBUG_TB)
|
549 |
if (loglevel != 0) { |
550 |
fprintf(logfile, "%s: tb %016" PRIx64 "\n", __func__, tb); |
551 |
} |
552 |
#endif
|
553 |
|
554 |
return tb >> 32; |
555 |
} |
556 |
|
557 |
void cpu_ppc_store_atbl (CPUState *env, uint32_t value)
|
558 |
{ |
559 |
ppc_tb_t *tb_env = env->tb_env; |
560 |
uint64_t tb; |
561 |
|
562 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset); |
563 |
tb &= 0xFFFFFFFF00000000ULL;
|
564 |
cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock), |
565 |
&tb_env->atb_offset, tb | (uint64_t)value); |
566 |
} |
567 |
|
568 |
void cpu_ppc_store_atbu (CPUState *env, uint32_t value)
|
569 |
{ |
570 |
ppc_tb_t *tb_env = env->tb_env; |
571 |
uint64_t tb; |
572 |
|
573 |
tb = cpu_ppc_get_tb(tb_env, qemu_get_clock(vm_clock), tb_env->atb_offset); |
574 |
tb &= 0x00000000FFFFFFFFULL;
|
575 |
cpu_ppc_store_tb(tb_env, qemu_get_clock(vm_clock), |
576 |
&tb_env->atb_offset, ((uint64_t)value << 32) | tb);
|
577 |
} |
578 |
|
579 |
static void cpu_ppc_tb_stop (CPUState *env) |
580 |
{ |
581 |
ppc_tb_t *tb_env = env->tb_env; |
582 |
uint64_t tb, atb, vmclk; |
583 |
|
584 |
/* If the time base is already frozen, do nothing */
|
585 |
if (tb_env->tb_freq != 0) { |
586 |
vmclk = qemu_get_clock(vm_clock); |
587 |
/* Get the time base */
|
588 |
tb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->tb_offset); |
589 |
/* Get the alternate time base */
|
590 |
atb = cpu_ppc_get_tb(tb_env, vmclk, tb_env->atb_offset); |
591 |
/* Store the time base value (ie compute the current offset) */
|
592 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb); |
593 |
/* Store the alternate time base value (compute the current offset) */
|
594 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb); |
595 |
/* Set the time base frequency to zero */
|
596 |
tb_env->tb_freq = 0;
|
597 |
/* Now, the time bases are frozen to tb_offset / atb_offset value */
|
598 |
} |
599 |
} |
600 |
|
601 |
static void cpu_ppc_tb_start (CPUState *env) |
602 |
{ |
603 |
ppc_tb_t *tb_env = env->tb_env; |
604 |
uint64_t tb, atb, vmclk; |
605 |
|
606 |
/* If the time base is not frozen, do nothing */
|
607 |
if (tb_env->tb_freq == 0) { |
608 |
vmclk = qemu_get_clock(vm_clock); |
609 |
/* Get the time base from tb_offset */
|
610 |
tb = tb_env->tb_offset; |
611 |
/* Get the alternate time base from atb_offset */
|
612 |
atb = tb_env->atb_offset; |
613 |
/* Restore the tb frequency from the decrementer frequency */
|
614 |
tb_env->tb_freq = tb_env->decr_freq; |
615 |
/* Store the time base value */
|
616 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->tb_offset, tb); |
617 |
/* Store the alternate time base value */
|
618 |
cpu_ppc_store_tb(tb_env, vmclk, &tb_env->atb_offset, atb); |
619 |
} |
620 |
} |
621 |
|
622 |
static always_inline uint32_t _cpu_ppc_load_decr (CPUState *env,
|
623 |
uint64_t *next) |
624 |
{ |
625 |
ppc_tb_t *tb_env = env->tb_env; |
626 |
uint32_t decr; |
627 |
int64_t diff; |
628 |
|
629 |
diff = tb_env->decr_next - qemu_get_clock(vm_clock); |
630 |
if (diff >= 0) |
631 |
decr = muldiv64(diff, tb_env->decr_freq, ticks_per_sec); |
632 |
else
|
633 |
decr = -muldiv64(-diff, tb_env->decr_freq, ticks_per_sec); |
634 |
#if defined(PPC_DEBUG_TB)
|
635 |
if (loglevel != 0) { |
636 |
fprintf(logfile, "%s: %08" PRIx32 "\n", __func__, decr); |
637 |
} |
638 |
#endif
|
639 |
|
640 |
return decr;
|
641 |
} |
642 |
|
643 |
uint32_t cpu_ppc_load_decr (CPUState *env) |
644 |
{ |
645 |
ppc_tb_t *tb_env = env->tb_env; |
646 |
|
647 |
return _cpu_ppc_load_decr(env, &tb_env->decr_next);
|
648 |
} |
649 |
|
650 |
uint32_t cpu_ppc_load_hdecr (CPUState *env) |
651 |
{ |
652 |
ppc_tb_t *tb_env = env->tb_env; |
653 |
|
654 |
return _cpu_ppc_load_decr(env, &tb_env->hdecr_next);
|
655 |
} |
656 |
|
657 |
uint64_t cpu_ppc_load_purr (CPUState *env) |
658 |
{ |
659 |
ppc_tb_t *tb_env = env->tb_env; |
660 |
uint64_t diff; |
661 |
|
662 |
diff = qemu_get_clock(vm_clock) - tb_env->purr_start; |
663 |
|
664 |
return tb_env->purr_load + muldiv64(diff, tb_env->tb_freq, ticks_per_sec);
|
665 |
} |
666 |
|
667 |
/* When decrementer expires,
|
668 |
* all we need to do is generate or queue a CPU exception
|
669 |
*/
|
670 |
static always_inline void cpu_ppc_decr_excp (CPUState *env) |
671 |
{ |
672 |
/* Raise it */
|
673 |
#ifdef PPC_DEBUG_TB
|
674 |
if (loglevel != 0) { |
675 |
fprintf(logfile, "raise decrementer exception\n");
|
676 |
} |
677 |
#endif
|
678 |
ppc_set_irq(env, PPC_INTERRUPT_DECR, 1);
|
679 |
} |
680 |
|
681 |
static always_inline void cpu_ppc_hdecr_excp (CPUState *env) |
682 |
{ |
683 |
/* Raise it */
|
684 |
#ifdef PPC_DEBUG_TB
|
685 |
if (loglevel != 0) { |
686 |
fprintf(logfile, "raise decrementer exception\n");
|
687 |
} |
688 |
#endif
|
689 |
ppc_set_irq(env, PPC_INTERRUPT_HDECR, 1);
|
690 |
} |
691 |
|
692 |
static void __cpu_ppc_store_decr (CPUState *env, uint64_t *nextp, |
693 |
struct QEMUTimer *timer,
|
694 |
void (*raise_excp)(CPUState *),
|
695 |
uint32_t decr, uint32_t value, |
696 |
int is_excp)
|
697 |
{ |
698 |
ppc_tb_t *tb_env = env->tb_env; |
699 |
uint64_t now, next; |
700 |
|
701 |
#ifdef PPC_DEBUG_TB
|
702 |
if (loglevel != 0) { |
703 |
fprintf(logfile, "%s: %08" PRIx32 " => %08" PRIx32 "\n", __func__, |
704 |
decr, value); |
705 |
} |
706 |
#endif
|
707 |
now = qemu_get_clock(vm_clock); |
708 |
next = now + muldiv64(value, ticks_per_sec, tb_env->decr_freq); |
709 |
if (is_excp)
|
710 |
next += *nextp - now; |
711 |
if (next == now)
|
712 |
next++; |
713 |
*nextp = next; |
714 |
/* Adjust timer */
|
715 |
qemu_mod_timer(timer, next); |
716 |
/* If we set a negative value and the decrementer was positive,
|
717 |
* raise an exception.
|
718 |
*/
|
719 |
if ((value & 0x80000000) && !(decr & 0x80000000)) |
720 |
(*raise_excp)(env); |
721 |
} |
722 |
|
723 |
static always_inline void _cpu_ppc_store_decr (CPUState *env, uint32_t decr, |
724 |
uint32_t value, int is_excp)
|
725 |
{ |
726 |
ppc_tb_t *tb_env = env->tb_env; |
727 |
|
728 |
__cpu_ppc_store_decr(env, &tb_env->decr_next, tb_env->decr_timer, |
729 |
&cpu_ppc_decr_excp, decr, value, is_excp); |
730 |
} |
731 |
|
732 |
void cpu_ppc_store_decr (CPUState *env, uint32_t value)
|
733 |
{ |
734 |
_cpu_ppc_store_decr(env, cpu_ppc_load_decr(env), value, 0);
|
735 |
} |
736 |
|
737 |
static void cpu_ppc_decr_cb (void *opaque) |
738 |
{ |
739 |
_cpu_ppc_store_decr(opaque, 0x00000000, 0xFFFFFFFF, 1); |
740 |
} |
741 |
|
742 |
static always_inline void _cpu_ppc_store_hdecr (CPUState *env, uint32_t hdecr, |
743 |
uint32_t value, int is_excp)
|
744 |
{ |
745 |
ppc_tb_t *tb_env = env->tb_env; |
746 |
|
747 |
if (tb_env->hdecr_timer != NULL) { |
748 |
__cpu_ppc_store_decr(env, &tb_env->hdecr_next, tb_env->hdecr_timer, |
749 |
&cpu_ppc_hdecr_excp, hdecr, value, is_excp); |
750 |
} |
751 |
} |
752 |
|
753 |
void cpu_ppc_store_hdecr (CPUState *env, uint32_t value)
|
754 |
{ |
755 |
_cpu_ppc_store_hdecr(env, cpu_ppc_load_hdecr(env), value, 0);
|
756 |
} |
757 |
|
758 |
static void cpu_ppc_hdecr_cb (void *opaque) |
759 |
{ |
760 |
_cpu_ppc_store_hdecr(opaque, 0x00000000, 0xFFFFFFFF, 1); |
761 |
} |
762 |
|
763 |
void cpu_ppc_store_purr (CPUState *env, uint64_t value)
|
764 |
{ |
765 |
ppc_tb_t *tb_env = env->tb_env; |
766 |
|
767 |
tb_env->purr_load = value; |
768 |
tb_env->purr_start = qemu_get_clock(vm_clock); |
769 |
} |
770 |
|
771 |
static void cpu_ppc_set_tb_clk (void *opaque, uint32_t freq) |
772 |
{ |
773 |
CPUState *env = opaque; |
774 |
ppc_tb_t *tb_env = env->tb_env; |
775 |
|
776 |
tb_env->tb_freq = freq; |
777 |
tb_env->decr_freq = freq; |
778 |
/* There is a bug in Linux 2.4 kernels:
|
779 |
* if a decrementer exception is pending when it enables msr_ee at startup,
|
780 |
* it's not ready to handle it...
|
781 |
*/
|
782 |
_cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0); |
783 |
_cpu_ppc_store_hdecr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0); |
784 |
cpu_ppc_store_purr(env, 0x0000000000000000ULL);
|
785 |
} |
786 |
|
787 |
/* Set up (once) timebase frequency (in Hz) */
|
788 |
clk_setup_cb cpu_ppc_tb_init (CPUState *env, uint32_t freq) |
789 |
{ |
790 |
ppc_tb_t *tb_env; |
791 |
|
792 |
tb_env = qemu_mallocz(sizeof(ppc_tb_t));
|
793 |
if (tb_env == NULL) |
794 |
return NULL; |
795 |
env->tb_env = tb_env; |
796 |
/* Create new timer */
|
797 |
tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_ppc_decr_cb, env); |
798 |
if (0) { |
799 |
/* XXX: find a suitable condition to enable the hypervisor decrementer
|
800 |
*/
|
801 |
tb_env->hdecr_timer = qemu_new_timer(vm_clock, &cpu_ppc_hdecr_cb, env); |
802 |
} else {
|
803 |
tb_env->hdecr_timer = NULL;
|
804 |
} |
805 |
cpu_ppc_set_tb_clk(env, freq); |
806 |
|
807 |
return &cpu_ppc_set_tb_clk;
|
808 |
} |
809 |
|
810 |
/* Specific helpers for POWER & PowerPC 601 RTC */
|
811 |
clk_setup_cb cpu_ppc601_rtc_init (CPUState *env) |
812 |
{ |
813 |
return cpu_ppc_tb_init(env, 7812500); |
814 |
} |
815 |
|
816 |
void cpu_ppc601_store_rtcu (CPUState *env, uint32_t value)
|
817 |
{ |
818 |
_cpu_ppc_store_tbu(env, value); |
819 |
} |
820 |
|
821 |
uint32_t cpu_ppc601_load_rtcu (CPUState *env) |
822 |
{ |
823 |
return _cpu_ppc_load_tbu(env);
|
824 |
} |
825 |
|
826 |
void cpu_ppc601_store_rtcl (CPUState *env, uint32_t value)
|
827 |
{ |
828 |
cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
|
829 |
} |
830 |
|
831 |
uint32_t cpu_ppc601_load_rtcl (CPUState *env) |
832 |
{ |
833 |
return cpu_ppc_load_tbl(env) & 0x3FFFFF80; |
834 |
} |
835 |
|
836 |
/*****************************************************************************/
|
837 |
/* Embedded PowerPC timers */
|
838 |
|
839 |
/* PIT, FIT & WDT */
|
840 |
typedef struct ppcemb_timer_t ppcemb_timer_t; |
841 |
struct ppcemb_timer_t {
|
842 |
uint64_t pit_reload; /* PIT auto-reload value */
|
843 |
uint64_t fit_next; /* Tick for next FIT interrupt */
|
844 |
struct QEMUTimer *fit_timer;
|
845 |
uint64_t wdt_next; /* Tick for next WDT interrupt */
|
846 |
struct QEMUTimer *wdt_timer;
|
847 |
}; |
848 |
|
849 |
/* Fixed interval timer */
|
850 |
static void cpu_4xx_fit_cb (void *opaque) |
851 |
{ |
852 |
CPUState *env; |
853 |
ppc_tb_t *tb_env; |
854 |
ppcemb_timer_t *ppcemb_timer; |
855 |
uint64_t now, next; |
856 |
|
857 |
env = opaque; |
858 |
tb_env = env->tb_env; |
859 |
ppcemb_timer = tb_env->opaque; |
860 |
now = qemu_get_clock(vm_clock); |
861 |
switch ((env->spr[SPR_40x_TCR] >> 24) & 0x3) { |
862 |
case 0: |
863 |
next = 1 << 9; |
864 |
break;
|
865 |
case 1: |
866 |
next = 1 << 13; |
867 |
break;
|
868 |
case 2: |
869 |
next = 1 << 17; |
870 |
break;
|
871 |
case 3: |
872 |
next = 1 << 21; |
873 |
break;
|
874 |
default:
|
875 |
/* Cannot occur, but makes gcc happy */
|
876 |
return;
|
877 |
} |
878 |
next = now + muldiv64(next, ticks_per_sec, tb_env->tb_freq); |
879 |
if (next == now)
|
880 |
next++; |
881 |
qemu_mod_timer(ppcemb_timer->fit_timer, next); |
882 |
env->spr[SPR_40x_TSR] |= 1 << 26; |
883 |
if ((env->spr[SPR_40x_TCR] >> 23) & 0x1) |
884 |
ppc_set_irq(env, PPC_INTERRUPT_FIT, 1);
|
885 |
#ifdef PPC_DEBUG_TB
|
886 |
if (loglevel != 0) { |
887 |
fprintf(logfile, "%s: ir %d TCR " ADDRX " TSR " ADDRX "\n", __func__, |
888 |
(int)((env->spr[SPR_40x_TCR] >> 23) & 0x1), |
889 |
env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]); |
890 |
} |
891 |
#endif
|
892 |
} |
893 |
|
894 |
/* Programmable interval timer */
|
895 |
static void start_stop_pit (CPUState *env, ppc_tb_t *tb_env, int is_excp) |
896 |
{ |
897 |
ppcemb_timer_t *ppcemb_timer; |
898 |
uint64_t now, next; |
899 |
|
900 |
ppcemb_timer = tb_env->opaque; |
901 |
if (ppcemb_timer->pit_reload <= 1 || |
902 |
!((env->spr[SPR_40x_TCR] >> 26) & 0x1) || |
903 |
(is_excp && !((env->spr[SPR_40x_TCR] >> 22) & 0x1))) { |
904 |
/* Stop PIT */
|
905 |
#ifdef PPC_DEBUG_TB
|
906 |
if (loglevel != 0) { |
907 |
fprintf(logfile, "%s: stop PIT\n", __func__);
|
908 |
} |
909 |
#endif
|
910 |
qemu_del_timer(tb_env->decr_timer); |
911 |
} else {
|
912 |
#ifdef PPC_DEBUG_TB
|
913 |
if (loglevel != 0) { |
914 |
fprintf(logfile, "%s: start PIT %016" PRIx64 "\n", |
915 |
__func__, ppcemb_timer->pit_reload); |
916 |
} |
917 |
#endif
|
918 |
now = qemu_get_clock(vm_clock); |
919 |
next = now + muldiv64(ppcemb_timer->pit_reload, |
920 |
ticks_per_sec, tb_env->decr_freq); |
921 |
if (is_excp)
|
922 |
next += tb_env->decr_next - now; |
923 |
if (next == now)
|
924 |
next++; |
925 |
qemu_mod_timer(tb_env->decr_timer, next); |
926 |
tb_env->decr_next = next; |
927 |
} |
928 |
} |
929 |
|
930 |
static void cpu_4xx_pit_cb (void *opaque) |
931 |
{ |
932 |
CPUState *env; |
933 |
ppc_tb_t *tb_env; |
934 |
ppcemb_timer_t *ppcemb_timer; |
935 |
|
936 |
env = opaque; |
937 |
tb_env = env->tb_env; |
938 |
ppcemb_timer = tb_env->opaque; |
939 |
env->spr[SPR_40x_TSR] |= 1 << 27; |
940 |
if ((env->spr[SPR_40x_TCR] >> 26) & 0x1) |
941 |
ppc_set_irq(env, PPC_INTERRUPT_PIT, 1);
|
942 |
start_stop_pit(env, tb_env, 1);
|
943 |
#ifdef PPC_DEBUG_TB
|
944 |
if (loglevel != 0) { |
945 |
fprintf(logfile, "%s: ar %d ir %d TCR " ADDRX " TSR " ADDRX " " |
946 |
"%016" PRIx64 "\n", __func__, |
947 |
(int)((env->spr[SPR_40x_TCR] >> 22) & 0x1), |
948 |
(int)((env->spr[SPR_40x_TCR] >> 26) & 0x1), |
949 |
env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR], |
950 |
ppcemb_timer->pit_reload); |
951 |
} |
952 |
#endif
|
953 |
} |
954 |
|
955 |
/* Watchdog timer */
|
956 |
static void cpu_4xx_wdt_cb (void *opaque) |
957 |
{ |
958 |
CPUState *env; |
959 |
ppc_tb_t *tb_env; |
960 |
ppcemb_timer_t *ppcemb_timer; |
961 |
uint64_t now, next; |
962 |
|
963 |
env = opaque; |
964 |
tb_env = env->tb_env; |
965 |
ppcemb_timer = tb_env->opaque; |
966 |
now = qemu_get_clock(vm_clock); |
967 |
switch ((env->spr[SPR_40x_TCR] >> 30) & 0x3) { |
968 |
case 0: |
969 |
next = 1 << 17; |
970 |
break;
|
971 |
case 1: |
972 |
next = 1 << 21; |
973 |
break;
|
974 |
case 2: |
975 |
next = 1 << 25; |
976 |
break;
|
977 |
case 3: |
978 |
next = 1 << 29; |
979 |
break;
|
980 |
default:
|
981 |
/* Cannot occur, but makes gcc happy */
|
982 |
return;
|
983 |
} |
984 |
next = now + muldiv64(next, ticks_per_sec, tb_env->decr_freq); |
985 |
if (next == now)
|
986 |
next++; |
987 |
#ifdef PPC_DEBUG_TB
|
988 |
if (loglevel != 0) { |
989 |
fprintf(logfile, "%s: TCR " ADDRX " TSR " ADDRX "\n", __func__, |
990 |
env->spr[SPR_40x_TCR], env->spr[SPR_40x_TSR]); |
991 |
} |
992 |
#endif
|
993 |
switch ((env->spr[SPR_40x_TSR] >> 30) & 0x3) { |
994 |
case 0x0: |
995 |
case 0x1: |
996 |
qemu_mod_timer(ppcemb_timer->wdt_timer, next); |
997 |
ppcemb_timer->wdt_next = next; |
998 |
env->spr[SPR_40x_TSR] |= 1 << 31; |
999 |
break;
|
1000 |
case 0x2: |
1001 |
qemu_mod_timer(ppcemb_timer->wdt_timer, next); |
1002 |
ppcemb_timer->wdt_next = next; |
1003 |
env->spr[SPR_40x_TSR] |= 1 << 30; |
1004 |
if ((env->spr[SPR_40x_TCR] >> 27) & 0x1) |
1005 |
ppc_set_irq(env, PPC_INTERRUPT_WDT, 1);
|
1006 |
break;
|
1007 |
case 0x3: |
1008 |
env->spr[SPR_40x_TSR] &= ~0x30000000;
|
1009 |
env->spr[SPR_40x_TSR] |= env->spr[SPR_40x_TCR] & 0x30000000;
|
1010 |
switch ((env->spr[SPR_40x_TCR] >> 28) & 0x3) { |
1011 |
case 0x0: |
1012 |
/* No reset */
|
1013 |
break;
|
1014 |
case 0x1: /* Core reset */ |
1015 |
ppc40x_core_reset(env); |
1016 |
break;
|
1017 |
case 0x2: /* Chip reset */ |
1018 |
ppc40x_chip_reset(env); |
1019 |
break;
|
1020 |
case 0x3: /* System reset */ |
1021 |
ppc40x_system_reset(env); |
1022 |
break;
|
1023 |
} |
1024 |
} |
1025 |
} |
1026 |
|
1027 |
void store_40x_pit (CPUState *env, target_ulong val)
|
1028 |
{ |
1029 |
ppc_tb_t *tb_env; |
1030 |
ppcemb_timer_t *ppcemb_timer; |
1031 |
|
1032 |
tb_env = env->tb_env; |
1033 |
ppcemb_timer = tb_env->opaque; |
1034 |
#ifdef PPC_DEBUG_TB
|
1035 |
if (loglevel != 0) { |
1036 |
fprintf(logfile, "%s val" ADDRX "\n", __func__, val); |
1037 |
} |
1038 |
#endif
|
1039 |
ppcemb_timer->pit_reload = val; |
1040 |
start_stop_pit(env, tb_env, 0);
|
1041 |
} |
1042 |
|
1043 |
target_ulong load_40x_pit (CPUState *env) |
1044 |
{ |
1045 |
return cpu_ppc_load_decr(env);
|
1046 |
} |
1047 |
|
1048 |
void store_booke_tsr (CPUState *env, target_ulong val)
|
1049 |
{ |
1050 |
#ifdef PPC_DEBUG_TB
|
1051 |
if (loglevel != 0) { |
1052 |
fprintf(logfile, "%s: val " ADDRX "\n", __func__, val); |
1053 |
} |
1054 |
#endif
|
1055 |
env->spr[SPR_40x_TSR] &= ~(val & 0xFC000000);
|
1056 |
if (val & 0x80000000) |
1057 |
ppc_set_irq(env, PPC_INTERRUPT_PIT, 0);
|
1058 |
} |
1059 |
|
1060 |
void store_booke_tcr (CPUState *env, target_ulong val)
|
1061 |
{ |
1062 |
ppc_tb_t *tb_env; |
1063 |
|
1064 |
tb_env = env->tb_env; |
1065 |
#ifdef PPC_DEBUG_TB
|
1066 |
if (loglevel != 0) { |
1067 |
fprintf(logfile, "%s: val " ADDRX "\n", __func__, val); |
1068 |
} |
1069 |
#endif
|
1070 |
env->spr[SPR_40x_TCR] = val & 0xFFC00000;
|
1071 |
start_stop_pit(env, tb_env, 1);
|
1072 |
cpu_4xx_wdt_cb(env); |
1073 |
} |
1074 |
|
1075 |
static void ppc_emb_set_tb_clk (void *opaque, uint32_t freq) |
1076 |
{ |
1077 |
CPUState *env = opaque; |
1078 |
ppc_tb_t *tb_env = env->tb_env; |
1079 |
|
1080 |
#ifdef PPC_DEBUG_TB
|
1081 |
if (loglevel != 0) { |
1082 |
fprintf(logfile, "%s set new frequency to %" PRIu32 "\n", __func__, |
1083 |
freq); |
1084 |
} |
1085 |
#endif
|
1086 |
tb_env->tb_freq = freq; |
1087 |
tb_env->decr_freq = freq; |
1088 |
/* XXX: we should also update all timers */
|
1089 |
} |
1090 |
|
1091 |
clk_setup_cb ppc_emb_timers_init (CPUState *env, uint32_t freq) |
1092 |
{ |
1093 |
ppc_tb_t *tb_env; |
1094 |
ppcemb_timer_t *ppcemb_timer; |
1095 |
|
1096 |
tb_env = qemu_mallocz(sizeof(ppc_tb_t));
|
1097 |
if (tb_env == NULL) { |
1098 |
return NULL; |
1099 |
} |
1100 |
env->tb_env = tb_env; |
1101 |
ppcemb_timer = qemu_mallocz(sizeof(ppcemb_timer_t));
|
1102 |
tb_env->tb_freq = freq; |
1103 |
tb_env->decr_freq = freq; |
1104 |
tb_env->opaque = ppcemb_timer; |
1105 |
#ifdef PPC_DEBUG_TB
|
1106 |
if (loglevel != 0) { |
1107 |
fprintf(logfile, "%s freq %" PRIu32 "\n", __func__, freq); |
1108 |
} |
1109 |
#endif
|
1110 |
if (ppcemb_timer != NULL) { |
1111 |
/* We use decr timer for PIT */
|
1112 |
tb_env->decr_timer = qemu_new_timer(vm_clock, &cpu_4xx_pit_cb, env); |
1113 |
ppcemb_timer->fit_timer = |
1114 |
qemu_new_timer(vm_clock, &cpu_4xx_fit_cb, env); |
1115 |
ppcemb_timer->wdt_timer = |
1116 |
qemu_new_timer(vm_clock, &cpu_4xx_wdt_cb, env); |
1117 |
} |
1118 |
|
1119 |
return &ppc_emb_set_tb_clk;
|
1120 |
} |
1121 |
|
1122 |
/*****************************************************************************/
|
1123 |
/* Embedded PowerPC Device Control Registers */
|
1124 |
typedef struct ppc_dcrn_t ppc_dcrn_t; |
1125 |
struct ppc_dcrn_t {
|
1126 |
dcr_read_cb dcr_read; |
1127 |
dcr_write_cb dcr_write; |
1128 |
void *opaque;
|
1129 |
}; |
1130 |
|
1131 |
/* XXX: on 460, DCR addresses are 32 bits wide,
|
1132 |
* using DCRIPR to get the 22 upper bits of the DCR address
|
1133 |
*/
|
1134 |
#define DCRN_NB 1024 |
1135 |
struct ppc_dcr_t {
|
1136 |
ppc_dcrn_t dcrn[DCRN_NB]; |
1137 |
int (*read_error)(int dcrn); |
1138 |
int (*write_error)(int dcrn); |
1139 |
}; |
1140 |
|
1141 |
int ppc_dcr_read (ppc_dcr_t *dcr_env, int dcrn, target_ulong *valp) |
1142 |
{ |
1143 |
ppc_dcrn_t *dcr; |
1144 |
|
1145 |
if (dcrn < 0 || dcrn >= DCRN_NB) |
1146 |
goto error;
|
1147 |
dcr = &dcr_env->dcrn[dcrn]; |
1148 |
if (dcr->dcr_read == NULL) |
1149 |
goto error;
|
1150 |
*valp = (*dcr->dcr_read)(dcr->opaque, dcrn); |
1151 |
|
1152 |
return 0; |
1153 |
|
1154 |
error:
|
1155 |
if (dcr_env->read_error != NULL) |
1156 |
return (*dcr_env->read_error)(dcrn);
|
1157 |
|
1158 |
return -1; |
1159 |
} |
1160 |
|
1161 |
int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, target_ulong val) |
1162 |
{ |
1163 |
ppc_dcrn_t *dcr; |
1164 |
|
1165 |
if (dcrn < 0 || dcrn >= DCRN_NB) |
1166 |
goto error;
|
1167 |
dcr = &dcr_env->dcrn[dcrn]; |
1168 |
if (dcr->dcr_write == NULL) |
1169 |
goto error;
|
1170 |
(*dcr->dcr_write)(dcr->opaque, dcrn, val); |
1171 |
|
1172 |
return 0; |
1173 |
|
1174 |
error:
|
1175 |
if (dcr_env->write_error != NULL) |
1176 |
return (*dcr_env->write_error)(dcrn);
|
1177 |
|
1178 |
return -1; |
1179 |
} |
1180 |
|
1181 |
int ppc_dcr_register (CPUState *env, int dcrn, void *opaque, |
1182 |
dcr_read_cb dcr_read, dcr_write_cb dcr_write) |
1183 |
{ |
1184 |
ppc_dcr_t *dcr_env; |
1185 |
ppc_dcrn_t *dcr; |
1186 |
|
1187 |
dcr_env = env->dcr_env; |
1188 |
if (dcr_env == NULL) |
1189 |
return -1; |
1190 |
if (dcrn < 0 || dcrn >= DCRN_NB) |
1191 |
return -1; |
1192 |
dcr = &dcr_env->dcrn[dcrn]; |
1193 |
if (dcr->opaque != NULL || |
1194 |
dcr->dcr_read != NULL ||
|
1195 |
dcr->dcr_write != NULL)
|
1196 |
return -1; |
1197 |
dcr->opaque = opaque; |
1198 |
dcr->dcr_read = dcr_read; |
1199 |
dcr->dcr_write = dcr_write; |
1200 |
|
1201 |
return 0; |
1202 |
} |
1203 |
|
1204 |
int ppc_dcr_init (CPUState *env, int (*read_error)(int dcrn), |
1205 |
int (*write_error)(int dcrn)) |
1206 |
{ |
1207 |
ppc_dcr_t *dcr_env; |
1208 |
|
1209 |
dcr_env = qemu_mallocz(sizeof(ppc_dcr_t));
|
1210 |
if (dcr_env == NULL) |
1211 |
return -1; |
1212 |
dcr_env->read_error = read_error; |
1213 |
dcr_env->write_error = write_error; |
1214 |
env->dcr_env = dcr_env; |
1215 |
|
1216 |
return 0; |
1217 |
} |
1218 |
|
1219 |
#if 0
|
1220 |
/*****************************************************************************/
|
1221 |
/* Handle system reset (for now, just stop emulation) */
|
1222 |
void cpu_ppc_reset (CPUState *env)
|
1223 |
{
|
1224 |
printf("Reset asked... Stop emulation\n");
|
1225 |
abort();
|
1226 |
}
|
1227 |
#endif
|
1228 |
|
1229 |
/*****************************************************************************/
|
1230 |
/* Debug port */
|
1231 |
void PPC_debug_write (void *opaque, uint32_t addr, uint32_t val) |
1232 |
{ |
1233 |
addr &= 0xF;
|
1234 |
switch (addr) {
|
1235 |
case 0: |
1236 |
printf("%c", val);
|
1237 |
break;
|
1238 |
case 1: |
1239 |
printf("\n");
|
1240 |
fflush(stdout); |
1241 |
break;
|
1242 |
case 2: |
1243 |
printf("Set loglevel to %04" PRIx32 "\n", val); |
1244 |
cpu_set_log(val | 0x100);
|
1245 |
break;
|
1246 |
} |
1247 |
} |
1248 |
|
1249 |
/*****************************************************************************/
|
1250 |
/* NVRAM helpers */
|
1251 |
static inline uint32_t nvram_read (nvram_t *nvram, uint32_t addr) |
1252 |
{ |
1253 |
return (*nvram->read_fn)(nvram->opaque, addr);;
|
1254 |
} |
1255 |
|
1256 |
static inline void nvram_write (nvram_t *nvram, uint32_t addr, uint32_t val) |
1257 |
{ |
1258 |
(*nvram->write_fn)(nvram->opaque, addr, val); |
1259 |
} |
1260 |
|
1261 |
void NVRAM_set_byte (nvram_t *nvram, uint32_t addr, uint8_t value)
|
1262 |
{ |
1263 |
nvram_write(nvram, addr, value); |
1264 |
} |
1265 |
|
1266 |
uint8_t NVRAM_get_byte (nvram_t *nvram, uint32_t addr) |
1267 |
{ |
1268 |
return nvram_read(nvram, addr);
|
1269 |
} |
1270 |
|
1271 |
void NVRAM_set_word (nvram_t *nvram, uint32_t addr, uint16_t value)
|
1272 |
{ |
1273 |
nvram_write(nvram, addr, value >> 8);
|
1274 |
nvram_write(nvram, addr + 1, value & 0xFF); |
1275 |
} |
1276 |
|
1277 |
uint16_t NVRAM_get_word (nvram_t *nvram, uint32_t addr) |
1278 |
{ |
1279 |
uint16_t tmp; |
1280 |
|
1281 |
tmp = nvram_read(nvram, addr) << 8;
|
1282 |
tmp |= nvram_read(nvram, addr + 1);
|
1283 |
|
1284 |
return tmp;
|
1285 |
} |
1286 |
|
1287 |
void NVRAM_set_lword (nvram_t *nvram, uint32_t addr, uint32_t value)
|
1288 |
{ |
1289 |
nvram_write(nvram, addr, value >> 24);
|
1290 |
nvram_write(nvram, addr + 1, (value >> 16) & 0xFF); |
1291 |
nvram_write(nvram, addr + 2, (value >> 8) & 0xFF); |
1292 |
nvram_write(nvram, addr + 3, value & 0xFF); |
1293 |
} |
1294 |
|
1295 |
uint32_t NVRAM_get_lword (nvram_t *nvram, uint32_t addr) |
1296 |
{ |
1297 |
uint32_t tmp; |
1298 |
|
1299 |
tmp = nvram_read(nvram, addr) << 24;
|
1300 |
tmp |= nvram_read(nvram, addr + 1) << 16; |
1301 |
tmp |= nvram_read(nvram, addr + 2) << 8; |
1302 |
tmp |= nvram_read(nvram, addr + 3);
|
1303 |
|
1304 |
return tmp;
|
1305 |
} |
1306 |
|
1307 |
void NVRAM_set_string (nvram_t *nvram, uint32_t addr,
|
1308 |
const unsigned char *str, uint32_t max) |
1309 |
{ |
1310 |
int i;
|
1311 |
|
1312 |
for (i = 0; i < max && str[i] != '\0'; i++) { |
1313 |
nvram_write(nvram, addr + i, str[i]); |
1314 |
} |
1315 |
nvram_write(nvram, addr + i, str[i]); |
1316 |
nvram_write(nvram, addr + max - 1, '\0'); |
1317 |
} |
1318 |
|
1319 |
int NVRAM_get_string (nvram_t *nvram, uint8_t *dst, uint16_t addr, int max) |
1320 |
{ |
1321 |
int i;
|
1322 |
|
1323 |
memset(dst, 0, max);
|
1324 |
for (i = 0; i < max; i++) { |
1325 |
dst[i] = NVRAM_get_byte(nvram, addr + i); |
1326 |
if (dst[i] == '\0') |
1327 |
break;
|
1328 |
} |
1329 |
|
1330 |
return i;
|
1331 |
} |
1332 |
|
1333 |
static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
|
1334 |
{ |
1335 |
uint16_t tmp; |
1336 |
uint16_t pd, pd1, pd2; |
1337 |
|
1338 |
tmp = prev >> 8;
|
1339 |
pd = prev ^ value; |
1340 |
pd1 = pd & 0x000F;
|
1341 |
pd2 = ((pd >> 4) & 0x000F) ^ pd1; |
1342 |
tmp ^= (pd1 << 3) | (pd1 << 8); |
1343 |
tmp ^= pd2 | (pd2 << 7) | (pd2 << 12); |
1344 |
|
1345 |
return tmp;
|
1346 |
} |
1347 |
|
1348 |
uint16_t NVRAM_compute_crc (nvram_t *nvram, uint32_t start, uint32_t count) |
1349 |
{ |
1350 |
uint32_t i; |
1351 |
uint16_t crc = 0xFFFF;
|
1352 |
int odd;
|
1353 |
|
1354 |
odd = count & 1;
|
1355 |
count &= ~1;
|
1356 |
for (i = 0; i != count; i++) { |
1357 |
crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i)); |
1358 |
} |
1359 |
if (odd) {
|
1360 |
crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
|
1361 |
} |
1362 |
|
1363 |
return crc;
|
1364 |
} |
1365 |
|
1366 |
#define CMDLINE_ADDR 0x017ff000 |
1367 |
|
1368 |
int PPC_NVRAM_set_params (nvram_t *nvram, uint16_t NVRAM_size,
|
1369 |
const unsigned char *arch, |
1370 |
uint32_t RAM_size, int boot_device,
|
1371 |
uint32_t kernel_image, uint32_t kernel_size, |
1372 |
const char *cmdline, |
1373 |
uint32_t initrd_image, uint32_t initrd_size, |
1374 |
uint32_t NVRAM_image, |
1375 |
int width, int height, int depth) |
1376 |
{ |
1377 |
uint16_t crc; |
1378 |
|
1379 |
/* Set parameters for Open Hack'Ware BIOS */
|
1380 |
NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16); |
1381 |
NVRAM_set_lword(nvram, 0x10, 0x00000002); /* structure v2 */ |
1382 |
NVRAM_set_word(nvram, 0x14, NVRAM_size);
|
1383 |
NVRAM_set_string(nvram, 0x20, arch, 16); |
1384 |
NVRAM_set_lword(nvram, 0x30, RAM_size);
|
1385 |
NVRAM_set_byte(nvram, 0x34, boot_device);
|
1386 |
NVRAM_set_lword(nvram, 0x38, kernel_image);
|
1387 |
NVRAM_set_lword(nvram, 0x3C, kernel_size);
|
1388 |
if (cmdline) {
|
1389 |
/* XXX: put the cmdline in NVRAM too ? */
|
1390 |
strcpy(phys_ram_base + CMDLINE_ADDR, cmdline); |
1391 |
NVRAM_set_lword(nvram, 0x40, CMDLINE_ADDR);
|
1392 |
NVRAM_set_lword(nvram, 0x44, strlen(cmdline));
|
1393 |
} else {
|
1394 |
NVRAM_set_lword(nvram, 0x40, 0); |
1395 |
NVRAM_set_lword(nvram, 0x44, 0); |
1396 |
} |
1397 |
NVRAM_set_lword(nvram, 0x48, initrd_image);
|
1398 |
NVRAM_set_lword(nvram, 0x4C, initrd_size);
|
1399 |
NVRAM_set_lword(nvram, 0x50, NVRAM_image);
|
1400 |
|
1401 |
NVRAM_set_word(nvram, 0x54, width);
|
1402 |
NVRAM_set_word(nvram, 0x56, height);
|
1403 |
NVRAM_set_word(nvram, 0x58, depth);
|
1404 |
crc = NVRAM_compute_crc(nvram, 0x00, 0xF8); |
1405 |
NVRAM_set_word(nvram, 0xFC, crc);
|
1406 |
|
1407 |
return 0; |
1408 |
} |