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Share devices that might be useful for all PowerPC 40x & 440 implementations 

(mostly CPU registration and UIC, for now).


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3340 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
j_mayer 2007-10-07 14:21:26 +00:00
parent 115646b648
commit 008ff9d756
4 changed files with 587 additions and 525 deletions
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20
hw/ppc405.h
View File

@ -25,6 +25,8 @@
#if !defined(PPC_405_H)
#define PPC_405_H
#include "ppc4xx.h"
/* Bootinfo as set-up by u-boot */
typedef struct ppc4xx_bd_info_t ppc4xx_bd_info_t;
struct ppc4xx_bd_info_t {
@ -54,19 +56,9 @@ struct ppc4xx_bd_info_t {
};
/* PowerPC 405 core */
CPUState *ppc405_init (const unsigned char *cpu_model,
clk_setup_t *cpu_clk, clk_setup_t *tb_clk,
uint32_t sysclk);
ram_addr_t ppc405_set_bootinfo (CPUState *env, ppc4xx_bd_info_t *bd,
uint32_t flags);
/* */
typedef struct ppc4xx_mmio_t ppc4xx_mmio_t;
int ppc4xx_mmio_register (CPUState *env, ppc4xx_mmio_t *mmio,
target_phys_addr_t offset, uint32_t len,
CPUReadMemoryFunc **mem_read,
CPUWriteMemoryFunc **mem_write, void *opaque);
ppc4xx_mmio_t *ppc4xx_mmio_init (CPUState *env, target_phys_addr_t base);
/* PowerPC 4xx peripheral local bus arbitrer */
void ppc4xx_plb_init (CPUState *env);
/* PLB to OPB bridge */
@ -74,14 +66,6 @@ void ppc4xx_pob_init (CPUState *env);
/* OPB arbitrer */
void ppc4xx_opba_init (CPUState *env, ppc4xx_mmio_t *mmio,
target_phys_addr_t offset);
/* PowerPC 4xx universal interrupt controller */
enum {
PPCUIC_OUTPUT_INT = 0,
PPCUIC_OUTPUT_CINT = 1,
PPCUIC_OUTPUT_NB,
};
qemu_irq *ppcuic_init (CPUState *env, qemu_irq *irqs,
uint32_t dcr_base, int has_ssr, int has_vr);
/* SDRAM controller */
void ppc405_sdram_init (CPUState *env, qemu_irq irq, int nbanks,
target_phys_addr_t *ram_bases,

509
hw/ppc405_uc.c
View File

@ -27,7 +27,6 @@
extern int loglevel;
extern FILE *logfile;
//#define DEBUG_MMIO
#define DEBUG_OPBA
#define DEBUG_SDRAM
#define DEBUG_GPIO
@ -36,41 +35,9 @@ extern FILE *logfile;
//#define DEBUG_I2C
#define DEBUG_GPT
#define DEBUG_MAL
#define DEBUG_UIC
#define DEBUG_CLOCKS
//#define DEBUG_UNASSIGNED
/*****************************************************************************/
/* Generic PowerPC 405 processor instanciation */
CPUState *ppc405_init (const unsigned char *cpu_model,
clk_setup_t *cpu_clk, clk_setup_t *tb_clk,
uint32_t sysclk)
{
CPUState *env;
ppc_def_t *def;
/* init CPUs */
env = cpu_init();
ppc_find_by_name(cpu_model, &def);
if (def == NULL) {
cpu_abort(env, "Unable to find PowerPC %s CPU definition\n",
cpu_model);
}
cpu_ppc_register(env, def);
cpu_ppc_reset(env);
cpu_clk->cb = NULL; /* We don't care about CPU clock frequency changes */
cpu_clk->opaque = env;
/* Set time-base frequency to sysclk */
tb_clk->cb = ppc_emb_timers_init(env, sysclk);
tb_clk->opaque = env;
ppc_dcr_init(env, NULL, NULL);
/* Register Qemu callbacks */
qemu_register_reset(&cpu_ppc_reset, env);
register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);
return env;
}
ram_addr_t ppc405_set_bootinfo (CPUState *env, ppc4xx_bd_info_t *bd,
uint32_t flags)
{
@ -123,203 +90,6 @@ ram_addr_t ppc405_set_bootinfo (CPUState *env, ppc4xx_bd_info_t *bd,
/*****************************************************************************/
/* Shared peripherals */
/*****************************************************************************/
/* Fake device used to map multiple devices in a single memory page */
#define MMIO_AREA_BITS 8
#define MMIO_AREA_LEN (1 << MMIO_AREA_BITS)
#define MMIO_AREA_NB (1 << (TARGET_PAGE_BITS - MMIO_AREA_BITS))
#define MMIO_IDX(addr) (((addr) >> MMIO_AREA_BITS) & (MMIO_AREA_NB - 1))
struct ppc4xx_mmio_t {
target_phys_addr_t base;
CPUReadMemoryFunc **mem_read[MMIO_AREA_NB];
CPUWriteMemoryFunc **mem_write[MMIO_AREA_NB];
void *opaque[MMIO_AREA_NB];
};
static uint32_t unassigned_mmio_readb (void *opaque, target_phys_addr_t addr)
{
#ifdef DEBUG_UNASSIGNED
ppc4xx_mmio_t *mmio;
mmio = opaque;
printf("Unassigned mmio read 0x" PADDRX " base " PADDRX "\n",
addr, mmio->base);
#endif
return 0;
}
static void unassigned_mmio_writeb (void *opaque,
target_phys_addr_t addr, uint32_t val)
{
#ifdef DEBUG_UNASSIGNED
ppc4xx_mmio_t *mmio;
mmio = opaque;
printf("Unassigned mmio write 0x" PADDRX " = 0x%x base " PADDRX "\n",
addr, val, mmio->base);
#endif
}
static CPUReadMemoryFunc *unassigned_mmio_read[3] = {
unassigned_mmio_readb,
unassigned_mmio_readb,
unassigned_mmio_readb,
};
static CPUWriteMemoryFunc *unassigned_mmio_write[3] = {
unassigned_mmio_writeb,
unassigned_mmio_writeb,
unassigned_mmio_writeb,
};
static uint32_t mmio_readlen (ppc4xx_mmio_t *mmio,
target_phys_addr_t addr, int len)
{
CPUReadMemoryFunc **mem_read;
uint32_t ret;
int idx;
idx = MMIO_IDX(addr - mmio->base);
#if defined(DEBUG_MMIO)
printf("%s: mmio %p len %d addr " PADDRX " idx %d\n", __func__,
mmio, len, addr, idx);
#endif
mem_read = mmio->mem_read[idx];
ret = (*mem_read[len])(mmio->opaque[idx], addr - mmio->base);
return ret;
}
static void mmio_writelen (ppc4xx_mmio_t *mmio,
target_phys_addr_t addr, uint32_t value, int len)
{
CPUWriteMemoryFunc **mem_write;
int idx;
idx = MMIO_IDX(addr - mmio->base);
#if defined(DEBUG_MMIO)
printf("%s: mmio %p len %d addr " PADDRX " idx %d value %08x\n", __func__,
mmio, len, addr, idx, value);
#endif
mem_write = mmio->mem_write[idx];
(*mem_write[len])(mmio->opaque[idx], addr - mmio->base, value);
}
static uint32_t mmio_readb (void *opaque, target_phys_addr_t addr)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX "\n", __func__, addr);
#endif
return mmio_readlen(opaque, addr, 0);
}
static void mmio_writeb (void *opaque,
target_phys_addr_t addr, uint32_t value)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX " val %08x\n", __func__, addr, value);
#endif
mmio_writelen(opaque, addr, value, 0);
}
static uint32_t mmio_readw (void *opaque, target_phys_addr_t addr)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX "\n", __func__, addr);
#endif
return mmio_readlen(opaque, addr, 1);
}
static void mmio_writew (void *opaque,
target_phys_addr_t addr, uint32_t value)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX " val %08x\n", __func__, addr, value);
#endif
mmio_writelen(opaque, addr, value, 1);
}
static uint32_t mmio_readl (void *opaque, target_phys_addr_t addr)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX "\n", __func__, addr);
#endif
return mmio_readlen(opaque, addr, 2);
}
static void mmio_writel (void *opaque,
target_phys_addr_t addr, uint32_t value)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX " val %08x\n", __func__, addr, value);
#endif
mmio_writelen(opaque, addr, value, 2);
}
static CPUReadMemoryFunc *mmio_read[] = {
&mmio_readb,
&mmio_readw,
&mmio_readl,
};
static CPUWriteMemoryFunc *mmio_write[] = {
&mmio_writeb,
&mmio_writew,
&mmio_writel,
};
int ppc4xx_mmio_register (CPUState *env, ppc4xx_mmio_t *mmio,
target_phys_addr_t offset, uint32_t len,
CPUReadMemoryFunc **mem_read,
CPUWriteMemoryFunc **mem_write, void *opaque)
{
uint32_t end;
int idx, eidx;
if ((offset + len) > TARGET_PAGE_SIZE)
return -1;
idx = MMIO_IDX(offset);
end = offset + len - 1;
eidx = MMIO_IDX(end);
#if defined(DEBUG_MMIO)
printf("%s: offset %08x len %08x %08x %d %d\n", __func__, offset, len,
end, idx, eidx);
#endif
for (; idx <= eidx; idx++) {
mmio->mem_read[idx] = mem_read;
mmio->mem_write[idx] = mem_write;
mmio->opaque[idx] = opaque;
}
return 0;
}
ppc4xx_mmio_t *ppc4xx_mmio_init (CPUState *env, target_phys_addr_t base)
{
ppc4xx_mmio_t *mmio;
int mmio_memory;
mmio = qemu_mallocz(sizeof(ppc4xx_mmio_t));
if (mmio != NULL) {
mmio->base = base;
mmio_memory = cpu_register_io_memory(0, mmio_read, mmio_write, mmio);
#if defined(DEBUG_MMIO)
printf("%s: %p base %08x len %08x %d\n", __func__,
mmio, base, TARGET_PAGE_SIZE, mmio_memory);
#endif
cpu_register_physical_memory(base, TARGET_PAGE_SIZE, mmio_memory);
ppc4xx_mmio_register(env, mmio, 0, TARGET_PAGE_SIZE,
unassigned_mmio_read, unassigned_mmio_write,
mmio);
}
return mmio;
}
/*****************************************************************************/
/* Peripheral local bus arbitrer */
enum {
@ -624,281 +394,6 @@ void ppc4xx_opba_init (CPUState *env, ppc4xx_mmio_t *mmio,
}
}
/*****************************************************************************/
/* "Universal" Interrupt controller */
enum {
DCR_UICSR = 0x000,
DCR_UICSRS = 0x001,
DCR_UICER = 0x002,
DCR_UICCR = 0x003,
DCR_UICPR = 0x004,
DCR_UICTR = 0x005,
DCR_UICMSR = 0x006,
DCR_UICVR = 0x007,
DCR_UICVCR = 0x008,
DCR_UICMAX = 0x009,
};
#define UIC_MAX_IRQ 32
typedef struct ppcuic_t ppcuic_t;
struct ppcuic_t {
uint32_t dcr_base;
int use_vectors;
uint32_t uicsr; /* Status register */
uint32_t uicer; /* Enable register */
uint32_t uiccr; /* Critical register */
uint32_t uicpr; /* Polarity register */
uint32_t uictr; /* Triggering register */
uint32_t uicvcr; /* Vector configuration register */
uint32_t uicvr;
qemu_irq *irqs;
};
static void ppcuic_trigger_irq (ppcuic_t *uic)
{
uint32_t ir, cr;
int start, end, inc, i;
/* Trigger interrupt if any is pending */
ir = uic->uicsr & uic->uicer & (~uic->uiccr);
cr = uic->uicsr & uic->uicer & uic->uiccr;
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "%s: uicsr %08x uicer %08x uiccr %08x\n"
" %08x ir %08x cr %08x\n", __func__,
uic->uicsr, uic->uicer, uic->uiccr,
uic->uicsr & uic->uicer, ir, cr);
}
#endif
if (ir != 0x0000000) {
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "Raise UIC interrupt\n");
}
#endif
qemu_irq_raise(uic->irqs[PPCUIC_OUTPUT_INT]);
} else {
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "Lower UIC interrupt\n");
}
#endif
qemu_irq_lower(uic->irqs[PPCUIC_OUTPUT_INT]);
}
/* Trigger critical interrupt if any is pending and update vector */
if (cr != 0x0000000) {
qemu_irq_raise(uic->irqs[PPCUIC_OUTPUT_CINT]);
if (uic->use_vectors) {
/* Compute critical IRQ vector */
if (uic->uicvcr & 1) {
start = 31;
end = 0;
inc = -1;
} else {
start = 0;
end = 31;
inc = 1;
}
uic->uicvr = uic->uicvcr & 0xFFFFFFFC;
for (i = start; i <= end; i += inc) {
if (cr & (1 << i)) {
uic->uicvr += (i - start) * 512 * inc;
break;
}
}
}
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "Raise UIC critical interrupt - vector %08x\n",
uic->uicvr);
}
#endif
} else {
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "Lower UIC critical interrupt\n");
}
#endif
qemu_irq_lower(uic->irqs[PPCUIC_OUTPUT_CINT]);
uic->uicvr = 0x00000000;
}
}
static void ppcuic_set_irq (void *opaque, int irq_num, int level)
{
ppcuic_t *uic;
uint32_t mask, sr;
uic = opaque;
mask = 1 << irq_num;
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "%s: irq %d level %d uicsr %08x mask %08x => %08x "
"%08x\n", __func__, irq_num, level,
uic->uicsr, mask, uic->uicsr & mask, level << irq_num);
}
#endif
if (irq_num < 0 || irq_num > 31)
return;
sr = uic->uicsr;
if (!(uic->uicpr & mask)) {
/* Negatively asserted IRQ */
level = level == 0 ? 1 : 0;
}
/* Update status register */
if (uic->uictr & mask) {
/* Edge sensitive interrupt */
if (level == 1)
uic->uicsr |= mask;
} else {
/* Level sensitive interrupt */
if (level == 1)
uic->uicsr |= mask;
else
uic->uicsr &= ~mask;
}
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "%s: irq %d level %d sr %08x => %08x\n", __func__,
irq_num, level, uic->uicsr, sr);
}
#endif
if (sr != uic->uicsr)
ppcuic_trigger_irq(uic);
}
static target_ulong dcr_read_uic (void *opaque, int dcrn)
{
ppcuic_t *uic;
target_ulong ret;
uic = opaque;
dcrn -= uic->dcr_base;
switch (dcrn) {
case DCR_UICSR:
case DCR_UICSRS:
ret = uic->uicsr;
break;
case DCR_UICER:
ret = uic->uicer;
break;
case DCR_UICCR:
ret = uic->uiccr;
break;
case DCR_UICPR:
ret = uic->uicpr;
break;
case DCR_UICTR:
ret = uic->uictr;
break;
case DCR_UICMSR:
ret = uic->uicsr & uic->uicer;
break;
case DCR_UICVR:
if (!uic->use_vectors)
goto no_read;
ret = uic->uicvr;
break;
case DCR_UICVCR:
if (!uic->use_vectors)
goto no_read;
ret = uic->uicvcr;
break;
default:
no_read:
ret = 0x00000000;
break;
}
return ret;
}
static void dcr_write_uic (void *opaque, int dcrn, target_ulong val)
{
ppcuic_t *uic;
uic = opaque;
dcrn -= uic->dcr_base;
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "%s: dcr %d val " ADDRX "\n", __func__, dcrn, val);
}
#endif
switch (dcrn) {
case DCR_UICSR:
uic->uicsr &= ~val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICSRS:
uic->uicsr |= val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICER:
uic->uicer = val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICCR:
uic->uiccr = val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICPR:
uic->uicpr = val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICTR:
uic->uictr = val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICMSR:
break;
case DCR_UICVR:
break;
case DCR_UICVCR:
uic->uicvcr = val & 0xFFFFFFFD;
ppcuic_trigger_irq(uic);
break;
}
}
static void ppcuic_reset (void *opaque)
{
ppcuic_t *uic;
uic = opaque;
uic->uiccr = 0x00000000;
uic->uicer = 0x00000000;
uic->uicpr = 0x00000000;
uic->uicsr = 0x00000000;
uic->uictr = 0x00000000;
if (uic->use_vectors) {
uic->uicvcr = 0x00000000;
uic->uicvr = 0x0000000;
}
}
qemu_irq *ppcuic_init (CPUState *env, qemu_irq *irqs,
uint32_t dcr_base, int has_ssr, int has_vr)
{
ppcuic_t *uic;
int i;
uic = qemu_mallocz(sizeof(ppcuic_t));
if (uic != NULL) {
uic->dcr_base = dcr_base;
uic->irqs = irqs;
if (has_vr)
uic->use_vectors = 1;
for (i = 0; i < DCR_UICMAX; i++) {
ppc_dcr_register(env, dcr_base + i, uic,
&dcr_read_uic, &dcr_write_uic);
}
qemu_register_reset(ppcuic_reset, uic);
ppcuic_reset(uic);
}
return qemu_allocate_irqs(&ppcuic_set_irq, uic, UIC_MAX_IRQ);
}
/*****************************************************************************/
/* Code decompression controller */
/* XXX: TODO */
@ -3040,7 +2535,7 @@ CPUState *ppc405cr_init (target_phys_addr_t ram_bases[4],
int i;
memset(clk_setup, 0, sizeof(clk_setup));
env = ppc405_init("405cr", &clk_setup[PPC405CR_CPU_CLK],
env = ppc4xx_init("405cr", &clk_setup[PPC405CR_CPU_CLK],
&clk_setup[PPC405CR_TMR_CLK], sysclk);
/* Memory mapped devices registers */
mmio = ppc4xx_mmio_init(env, 0xEF600000);
@ -3390,7 +2885,7 @@ CPUState *ppc405ep_init (target_phys_addr_t ram_bases[2],
memset(clk_setup, 0, sizeof(clk_setup));
/* init CPUs */
env = ppc405_init("405ep", &clk_setup[PPC405EP_CPU_CLK],
env = ppc4xx_init("405ep", &clk_setup[PPC405EP_CPU_CLK],
&tlb_clk_setup, sysclk);
clk_setup[PPC405EP_CPU_CLK].cb = tlb_clk_setup.cb;
clk_setup[PPC405EP_CPU_CLK].opaque = tlb_clk_setup.opaque;

49
hw/ppc4xx.h Normal file
View File

@ -0,0 +1,49 @@
/*
* QEMU PowerPC 4xx emulation shared definitions
*
* Copyright (c) 2007 Jocelyn Mayer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#if !defined(PPC_4XX_H)
#define PPC_4XX_H
/* PowerPC 4xx core initialization */
CPUState *ppc4xx_init (const unsigned char *cpu_model,
clk_setup_t *cpu_clk, clk_setup_t *tb_clk,
uint32_t sysclk);
typedef struct ppc4xx_mmio_t ppc4xx_mmio_t;
int ppc4xx_mmio_register (CPUState *env, ppc4xx_mmio_t *mmio,
target_phys_addr_t offset, uint32_t len,
CPUReadMemoryFunc **mem_read,
CPUWriteMemoryFunc **mem_write, void *opaque);
ppc4xx_mmio_t *ppc4xx_mmio_init (CPUState *env, target_phys_addr_t base);
/* PowerPC 4xx universal interrupt controller */
enum {
PPCUIC_OUTPUT_INT = 0,
PPCUIC_OUTPUT_CINT = 1,
PPCUIC_OUTPUT_NB,
};
qemu_irq *ppcuic_init (CPUState *env, qemu_irq *irqs,
uint32_t dcr_base, int has_ssr, int has_vr);
#endif /* !defined(PPC_4XX_H) */

534
hw/ppc4xx_devs.c Normal file
View File

@ -0,0 +1,534 @@
/*
* QEMU PowerPC 4xx embedded processors shared devices emulation
*
* Copyright (c) 2007 Jocelyn Mayer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "vl.h"
#include "ppc4xx.h"
extern int loglevel;
extern FILE *logfile;
//#define DEBUG_MMIO
#define DEBUG_UIC
/*****************************************************************************/
/* Generic PowerPC 4xx processor instanciation */
CPUState *ppc4xx_init (const unsigned char *cpu_model,
clk_setup_t *cpu_clk, clk_setup_t *tb_clk,
uint32_t sysclk)
{
CPUState *env;
ppc_def_t *def;
/* init CPUs */
env = cpu_init();
ppc_find_by_name(cpu_model, &def);
if (def == NULL) {
cpu_abort(env, "Unable to find PowerPC %s CPU definition\n",
cpu_model);
}
cpu_ppc_register(env, def);
cpu_ppc_reset(env);
cpu_clk->cb = NULL; /* We don't care about CPU clock frequency changes */
cpu_clk->opaque = env;
/* Set time-base frequency to sysclk */
tb_clk->cb = ppc_emb_timers_init(env, sysclk);
tb_clk->opaque = env;
ppc_dcr_init(env, NULL, NULL);
/* Register qemu callbacks */
qemu_register_reset(&cpu_ppc_reset, env);
register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);
return env;
}
/*****************************************************************************/
/* Fake device used to map multiple devices in a single memory page */
#define MMIO_AREA_BITS 8
#define MMIO_AREA_LEN (1 << MMIO_AREA_BITS)
#define MMIO_AREA_NB (1 << (TARGET_PAGE_BITS - MMIO_AREA_BITS))
#define MMIO_IDX(addr) (((addr) >> MMIO_AREA_BITS) & (MMIO_AREA_NB - 1))
struct ppc4xx_mmio_t {
target_phys_addr_t base;
CPUReadMemoryFunc **mem_read[MMIO_AREA_NB];
CPUWriteMemoryFunc **mem_write[MMIO_AREA_NB];
void *opaque[MMIO_AREA_NB];
};
static uint32_t unassigned_mmio_readb (void *opaque, target_phys_addr_t addr)
{
#ifdef DEBUG_UNASSIGNED
ppc4xx_mmio_t *mmio;
mmio = opaque;
printf("Unassigned mmio read 0x" PADDRX " base " PADDRX "\n",
addr, mmio->base);
#endif
return 0;
}
static void unassigned_mmio_writeb (void *opaque,
target_phys_addr_t addr, uint32_t val)
{
#ifdef DEBUG_UNASSIGNED
ppc4xx_mmio_t *mmio;
mmio = opaque;
printf("Unassigned mmio write 0x" PADDRX " = 0x%x base " PADDRX "\n",
addr, val, mmio->base);
#endif
}
static CPUReadMemoryFunc *unassigned_mmio_read[3] = {
unassigned_mmio_readb,
unassigned_mmio_readb,
unassigned_mmio_readb,
};
static CPUWriteMemoryFunc *unassigned_mmio_write[3] = {
unassigned_mmio_writeb,
unassigned_mmio_writeb,
unassigned_mmio_writeb,
};
static uint32_t mmio_readlen (ppc4xx_mmio_t *mmio,
target_phys_addr_t addr, int len)
{
CPUReadMemoryFunc **mem_read;
uint32_t ret;
int idx;
idx = MMIO_IDX(addr - mmio->base);
#if defined(DEBUG_MMIO)
printf("%s: mmio %p len %d addr " PADDRX " idx %d\n", __func__,
mmio, len, addr, idx);
#endif
mem_read = mmio->mem_read[idx];
ret = (*mem_read[len])(mmio->opaque[idx], addr - mmio->base);
return ret;
}
static void mmio_writelen (ppc4xx_mmio_t *mmio,
target_phys_addr_t addr, uint32_t value, int len)
{
CPUWriteMemoryFunc **mem_write;
int idx;
idx = MMIO_IDX(addr - mmio->base);
#if defined(DEBUG_MMIO)
printf("%s: mmio %p len %d addr " PADDRX " idx %d value %08x\n", __func__,
mmio, len, addr, idx, value);
#endif
mem_write = mmio->mem_write[idx];
(*mem_write[len])(mmio->opaque[idx], addr - mmio->base, value);
}
static uint32_t mmio_readb (void *opaque, target_phys_addr_t addr)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX "\n", __func__, addr);
#endif
return mmio_readlen(opaque, addr, 0);
}
static void mmio_writeb (void *opaque,
target_phys_addr_t addr, uint32_t value)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX " val %08x\n", __func__, addr, value);
#endif
mmio_writelen(opaque, addr, value, 0);
}
static uint32_t mmio_readw (void *opaque, target_phys_addr_t addr)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX "\n", __func__, addr);
#endif
return mmio_readlen(opaque, addr, 1);
}
static void mmio_writew (void *opaque,
target_phys_addr_t addr, uint32_t value)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX " val %08x\n", __func__, addr, value);
#endif
mmio_writelen(opaque, addr, value, 1);
}
static uint32_t mmio_readl (void *opaque, target_phys_addr_t addr)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX "\n", __func__, addr);
#endif
return mmio_readlen(opaque, addr, 2);
}
static void mmio_writel (void *opaque,
target_phys_addr_t addr, uint32_t value)
{
#if defined(DEBUG_MMIO)
printf("%s: addr " PADDRX " val %08x\n", __func__, addr, value);
#endif
mmio_writelen(opaque, addr, value, 2);
}
static CPUReadMemoryFunc *mmio_read[] = {
&mmio_readb,
&mmio_readw,
&mmio_readl,
};
static CPUWriteMemoryFunc *mmio_write[] = {
&mmio_writeb,
&mmio_writew,
&mmio_writel,
};
int ppc4xx_mmio_register (CPUState *env, ppc4xx_mmio_t *mmio,
target_phys_addr_t offset, uint32_t len,
CPUReadMemoryFunc **mem_read,
CPUWriteMemoryFunc **mem_write, void *opaque)
{
uint32_t end;
int idx, eidx;
if ((offset + len) > TARGET_PAGE_SIZE)
return -1;
idx = MMIO_IDX(offset);
end = offset + len - 1;
eidx = MMIO_IDX(end);
#if defined(DEBUG_MMIO)
printf("%s: offset %08x len %08x %08x %d %d\n", __func__, offset, len,
end, idx, eidx);
#endif
for (; idx <= eidx; idx++) {
mmio->mem_read[idx] = mem_read;
mmio->mem_write[idx] = mem_write;
mmio->opaque[idx] = opaque;
}
return 0;
}
ppc4xx_mmio_t *ppc4xx_mmio_init (CPUState *env, target_phys_addr_t base)
{
ppc4xx_mmio_t *mmio;
int mmio_memory;
mmio = qemu_mallocz(sizeof(ppc4xx_mmio_t));
if (mmio != NULL) {
mmio->base = base;
mmio_memory = cpu_register_io_memory(0, mmio_read, mmio_write, mmio);
#if defined(DEBUG_MMIO)
printf("%s: %p base %08x len %08x %d\n", __func__,
mmio, base, TARGET_PAGE_SIZE, mmio_memory);
#endif
cpu_register_physical_memory(base, TARGET_PAGE_SIZE, mmio_memory);
ppc4xx_mmio_register(env, mmio, 0, TARGET_PAGE_SIZE,
unassigned_mmio_read, unassigned_mmio_write,
mmio);
}
return mmio;
}
/*****************************************************************************/
/* "Universal" Interrupt controller */
enum {
DCR_UICSR = 0x000,
DCR_UICSRS = 0x001,
DCR_UICER = 0x002,
DCR_UICCR = 0x003,
DCR_UICPR = 0x004,
DCR_UICTR = 0x005,
DCR_UICMSR = 0x006,
DCR_UICVR = 0x007,
DCR_UICVCR = 0x008,
DCR_UICMAX = 0x009,
};
#define UIC_MAX_IRQ 32
typedef struct ppcuic_t ppcuic_t;
struct ppcuic_t {
uint32_t dcr_base;
int use_vectors;
uint32_t uicsr; /* Status register */
uint32_t uicer; /* Enable register */
uint32_t uiccr; /* Critical register */
uint32_t uicpr; /* Polarity register */
uint32_t uictr; /* Triggering register */
uint32_t uicvcr; /* Vector configuration register */
uint32_t uicvr;
qemu_irq *irqs;
};
static void ppcuic_trigger_irq (ppcuic_t *uic)
{
uint32_t ir, cr;
int start, end, inc, i;
/* Trigger interrupt if any is pending */
ir = uic->uicsr & uic->uicer & (~uic->uiccr);
cr = uic->uicsr & uic->uicer & uic->uiccr;
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "%s: uicsr %08x uicer %08x uiccr %08x\n"
" %08x ir %08x cr %08x\n", __func__,
uic->uicsr, uic->uicer, uic->uiccr,
uic->uicsr & uic->uicer, ir, cr);
}
#endif
if (ir != 0x0000000) {
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "Raise UIC interrupt\n");
}
#endif
qemu_irq_raise(uic->irqs[PPCUIC_OUTPUT_INT]);
} else {
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "Lower UIC interrupt\n");
}
#endif
qemu_irq_lower(uic->irqs[PPCUIC_OUTPUT_INT]);
}
/* Trigger critical interrupt if any is pending and update vector */
if (cr != 0x0000000) {
qemu_irq_raise(uic->irqs[PPCUIC_OUTPUT_CINT]);
if (uic->use_vectors) {
/* Compute critical IRQ vector */
if (uic->uicvcr & 1) {
start = 31;
end = 0;
inc = -1;
} else {
start = 0;
end = 31;
inc = 1;
}
uic->uicvr = uic->uicvcr & 0xFFFFFFFC;
for (i = start; i <= end; i += inc) {
if (cr & (1 << i)) {
uic->uicvr += (i - start) * 512 * inc;
break;
}
}
}
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "Raise UIC critical interrupt - vector %08x\n",
uic->uicvr);
}
#endif
} else {
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "Lower UIC critical interrupt\n");
}
#endif
qemu_irq_lower(uic->irqs[PPCUIC_OUTPUT_CINT]);
uic->uicvr = 0x00000000;
}
}
static void ppcuic_set_irq (void *opaque, int irq_num, int level)
{
ppcuic_t *uic;
uint32_t mask, sr;
uic = opaque;
mask = 1 << irq_num;
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "%s: irq %d level %d uicsr %08x mask %08x => %08x "
"%08x\n", __func__, irq_num, level,
uic->uicsr, mask, uic->uicsr & mask, level << irq_num);
}
#endif
if (irq_num < 0 || irq_num > 31)
return;
sr = uic->uicsr;
if (!(uic->uicpr & mask)) {
/* Negatively asserted IRQ */
level = level == 0 ? 1 : 0;
}
/* Update status register */
if (uic->uictr & mask) {
/* Edge sensitive interrupt */
if (level == 1)
uic->uicsr |= mask;
} else {
/* Level sensitive interrupt */
if (level == 1)
uic->uicsr |= mask;
else
uic->uicsr &= ~mask;
}
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "%s: irq %d level %d sr %08x => %08x\n", __func__,
irq_num, level, uic->uicsr, sr);
}
#endif
if (sr != uic->uicsr)
ppcuic_trigger_irq(uic);
}
static target_ulong dcr_read_uic (void *opaque, int dcrn)
{
ppcuic_t *uic;
target_ulong ret;
uic = opaque;
dcrn -= uic->dcr_base;
switch (dcrn) {
case DCR_UICSR:
case DCR_UICSRS:
ret = uic->uicsr;
break;
case DCR_UICER:
ret = uic->uicer;
break;
case DCR_UICCR:
ret = uic->uiccr;
break;
case DCR_UICPR:
ret = uic->uicpr;
break;
case DCR_UICTR:
ret = uic->uictr;
break;
case DCR_UICMSR:
ret = uic->uicsr & uic->uicer;
break;
case DCR_UICVR:
if (!uic->use_vectors)
goto no_read;
ret = uic->uicvr;
break;
case DCR_UICVCR:
if (!uic->use_vectors)
goto no_read;
ret = uic->uicvcr;
break;
default:
no_read:
ret = 0x00000000;
break;
}
return ret;
}
static void dcr_write_uic (void *opaque, int dcrn, target_ulong val)
{
ppcuic_t *uic;
uic = opaque;
dcrn -= uic->dcr_base;
#ifdef DEBUG_UIC
if (loglevel & CPU_LOG_INT) {
fprintf(logfile, "%s: dcr %d val " ADDRX "\n", __func__, dcrn, val);
}
#endif
switch (dcrn) {
case DCR_UICSR:
uic->uicsr &= ~val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICSRS:
uic->uicsr |= val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICER:
uic->uicer = val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICCR:
uic->uiccr = val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICPR:
uic->uicpr = val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICTR:
uic->uictr = val;
ppcuic_trigger_irq(uic);
break;
case DCR_UICMSR:
break;
case DCR_UICVR:
break;
case DCR_UICVCR:
uic->uicvcr = val & 0xFFFFFFFD;
ppcuic_trigger_irq(uic);
break;
}
}
static void ppcuic_reset (void *opaque)
{
ppcuic_t *uic;
uic = opaque;
uic->uiccr = 0x00000000;
uic->uicer = 0x00000000;
uic->uicpr = 0x00000000;
uic->uicsr = 0x00000000;
uic->uictr = 0x00000000;
if (uic->use_vectors) {
uic->uicvcr = 0x00000000;
uic->uicvr = 0x0000000;
}
}
qemu_irq *ppcuic_init (CPUState *env, qemu_irq *irqs,
uint32_t dcr_base, int has_ssr, int has_vr)
{
ppcuic_t *uic;
int i;
uic = qemu_mallocz(sizeof(ppcuic_t));
if (uic != NULL) {
uic->dcr_base = dcr_base;
uic->irqs = irqs;
if (has_vr)
uic->use_vectors = 1;
for (i = 0; i < DCR_UICMAX; i++) {
ppc_dcr_register(env, dcr_base + i, uic,
&dcr_read_uic, &dcr_write_uic);
}
qemu_register_reset(ppcuic_reset, uic);
ppcuic_reset(uic);
}
return qemu_allocate_irqs(&ppcuic_set_irq, uic, UIC_MAX_IRQ);
}