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qemu / qemu / 5b0138b31469a635069d5f645fbeb6c2f998cde2 / . / hw / ppc / ppc4xx_devs.c
blob: 737c0896b4f8a42c93d2dd562400421821a56022 [file] [log] [blame]
/*
* 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 "qemu/osdep.h"
#include "qemu/units.h"
#include "sysemu/reset.h"
#include "cpu.h"
#include "hw/irq.h"
#include "hw/ppc/ppc.h"
#include "hw/ppc/ppc4xx.h"
#include "hw/intc/ppc-uic.h"
#include "hw/qdev-properties.h"
#include "qemu/log.h"
#include "exec/address-spaces.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "trace.h"
static void ppc4xx_reset(void *opaque)
{
PowerPCCPU *cpu = opaque;
cpu_reset(CPU(cpu));
}
/*****************************************************************************/
/* Generic PowerPC 4xx processor instantiation */
PowerPCCPU *ppc4xx_init(const char *cpu_type,
clk_setup_t *cpu_clk, clk_setup_t *tb_clk,
uint32_t sysclk)
{
PowerPCCPU *cpu;
CPUPPCState *env;
/* init CPUs */
cpu = POWERPC_CPU(cpu_create(cpu_type));
env = &cpu->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_40x_timers_init(env, sysclk, PPC_INTERRUPT_PIT);
tb_clk->opaque = env;
ppc_dcr_init(env, NULL, NULL);
/* Register qemu callbacks */
qemu_register_reset(ppc4xx_reset, cpu);
return cpu;
}
/*****************************************************************************/
/* SDRAM controller */
typedef struct ppc4xx_sdram_t ppc4xx_sdram_t;
struct ppc4xx_sdram_t {
uint32_t addr;
int nbanks;
MemoryRegion containers[4]; /* used for clipping */
MemoryRegion *ram_memories;
hwaddr ram_bases[4];
hwaddr ram_sizes[4];
uint32_t besr0;
uint32_t besr1;
uint32_t bear;
uint32_t cfg;
uint32_t status;
uint32_t rtr;
uint32_t pmit;
uint32_t bcr[4];
uint32_t tr;
uint32_t ecccfg;
uint32_t eccesr;
qemu_irq irq;
};
enum {
SDRAM0_CFGADDR = 0x010,
SDRAM0_CFGDATA = 0x011,
};
/* XXX: TOFIX: some patches have made this code become inconsistent:
* there are type inconsistencies, mixing hwaddr, target_ulong
* and uint32_t
*/
static uint32_t sdram_bcr (hwaddr ram_base,
hwaddr ram_size)
{
uint32_t bcr;
switch (ram_size) {
case 4 * MiB:
bcr = 0x00000000;
break;
case 8 * MiB:
bcr = 0x00020000;
break;
case 16 * MiB:
bcr = 0x00040000;
break;
case 32 * MiB:
bcr = 0x00060000;
break;
case 64 * MiB:
bcr = 0x00080000;
break;
case 128 * MiB:
bcr = 0x000A0000;
break;
case 256 * MiB:
bcr = 0x000C0000;
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"%s: invalid RAM size 0x%" HWADDR_PRIx "\n", __func__,
ram_size);
return 0x00000000;
}
bcr |= ram_base & 0xFF800000;
bcr |= 1;
return bcr;
}
static inline hwaddr sdram_base(uint32_t bcr)
{
return bcr & 0xFF800000;
}
static target_ulong sdram_size (uint32_t bcr)
{
target_ulong size;
int sh;
sh = (bcr >> 17) & 0x7;
if (sh == 7)
size = -1;
else
size = (4 * MiB) << sh;
return size;
}
static void sdram_set_bcr(ppc4xx_sdram_t *sdram, int i,
uint32_t bcr, int enabled)
{
if (sdram->bcr[i] & 0x00000001) {
/* Unmap RAM */
trace_ppc4xx_sdram_unmap(sdram_base(sdram->bcr[i]),
sdram_size(sdram->bcr[i]));
memory_region_del_subregion(get_system_memory(),
&sdram->containers[i]);
memory_region_del_subregion(&sdram->containers[i],
&sdram->ram_memories[i]);
object_unparent(OBJECT(&sdram->containers[i]));
}
sdram->bcr[i] = bcr & 0xFFDEE001;
if (enabled && (bcr & 0x00000001)) {
trace_ppc4xx_sdram_unmap(sdram_base(bcr), sdram_size(bcr));
memory_region_init(&sdram->containers[i], NULL, "sdram-containers",
sdram_size(bcr));
memory_region_add_subregion(&sdram->containers[i], 0,
&sdram->ram_memories[i]);
memory_region_add_subregion(get_system_memory(),
sdram_base(bcr),
&sdram->containers[i]);
}
}
static void sdram_map_bcr (ppc4xx_sdram_t *sdram)
{
int i;
for (i = 0; i < sdram->nbanks; i++) {
if (sdram->ram_sizes[i] != 0) {
sdram_set_bcr(sdram, i, sdram_bcr(sdram->ram_bases[i],
sdram->ram_sizes[i]), 1);
} else {
sdram_set_bcr(sdram, i, 0x00000000, 0);
}
}
}
static void sdram_unmap_bcr (ppc4xx_sdram_t *sdram)
{
int i;
for (i = 0; i < sdram->nbanks; i++) {
trace_ppc4xx_sdram_unmap(sdram_base(sdram->bcr[i]),
sdram_size(sdram->bcr[i]));
memory_region_del_subregion(get_system_memory(),
&sdram->ram_memories[i]);
}
}
static uint32_t dcr_read_sdram (void *opaque, int dcrn)
{
ppc4xx_sdram_t *sdram;
uint32_t ret;
sdram = opaque;
switch (dcrn) {
case SDRAM0_CFGADDR:
ret = sdram->addr;
break;
case SDRAM0_CFGDATA:
switch (sdram->addr) {
case 0x00: /* SDRAM_BESR0 */
ret = sdram->besr0;
break;
case 0x08: /* SDRAM_BESR1 */
ret = sdram->besr1;
break;
case 0x10: /* SDRAM_BEAR */
ret = sdram->bear;
break;
case 0x20: /* SDRAM_CFG */
ret = sdram->cfg;
break;
case 0x24: /* SDRAM_STATUS */
ret = sdram->status;
break;
case 0x30: /* SDRAM_RTR */
ret = sdram->rtr;
break;
case 0x34: /* SDRAM_PMIT */
ret = sdram->pmit;
break;
case 0x40: /* SDRAM_B0CR */
ret = sdram->bcr[0];
break;
case 0x44: /* SDRAM_B1CR */
ret = sdram->bcr[1];
break;
case 0x48: /* SDRAM_B2CR */
ret = sdram->bcr[2];
break;
case 0x4C: /* SDRAM_B3CR */
ret = sdram->bcr[3];
break;
case 0x80: /* SDRAM_TR */
ret = -1; /* ? */
break;
case 0x94: /* SDRAM_ECCCFG */
ret = sdram->ecccfg;
break;
case 0x98: /* SDRAM_ECCESR */
ret = sdram->eccesr;
break;
default: /* Error */
ret = -1;
break;
}
break;
default:
/* Avoid gcc warning */
ret = 0x00000000;
break;
}
return ret;
}
static void dcr_write_sdram (void *opaque, int dcrn, uint32_t val)
{
ppc4xx_sdram_t *sdram;
sdram = opaque;
switch (dcrn) {
case SDRAM0_CFGADDR:
sdram->addr = val;
break;
case SDRAM0_CFGDATA:
switch (sdram->addr) {
case 0x00: /* SDRAM_BESR0 */
sdram->besr0 &= ~val;
break;
case 0x08: /* SDRAM_BESR1 */
sdram->besr1 &= ~val;
break;
case 0x10: /* SDRAM_BEAR */
sdram->bear = val;
break;
case 0x20: /* SDRAM_CFG */
val &= 0xFFE00000;
if (!(sdram->cfg & 0x80000000) && (val & 0x80000000)) {
trace_ppc4xx_sdram_enable("enable");
/* validate all RAM mappings */
sdram_map_bcr(sdram);
sdram->status &= ~0x80000000;
} else if ((sdram->cfg & 0x80000000) && !(val & 0x80000000)) {
trace_ppc4xx_sdram_enable("disable");
/* invalidate all RAM mappings */
sdram_unmap_bcr(sdram);
sdram->status |= 0x80000000;
}
if (!(sdram->cfg & 0x40000000) && (val & 0x40000000))
sdram->status |= 0x40000000;
else if ((sdram->cfg & 0x40000000) && !(val & 0x40000000))
sdram->status &= ~0x40000000;
sdram->cfg = val;
break;
case 0x24: /* SDRAM_STATUS */
/* Read-only register */
break;
case 0x30: /* SDRAM_RTR */
sdram->rtr = val & 0x3FF80000;
break;
case 0x34: /* SDRAM_PMIT */
sdram->pmit = (val & 0xF8000000) | 0x07C00000;
break;
case 0x40: /* SDRAM_B0CR */
sdram_set_bcr(sdram, 0, val, sdram->cfg & 0x80000000);
break;
case 0x44: /* SDRAM_B1CR */
sdram_set_bcr(sdram, 1, val, sdram->cfg & 0x80000000);
break;
case 0x48: /* SDRAM_B2CR */
sdram_set_bcr(sdram, 2, val, sdram->cfg & 0x80000000);
break;
case 0x4C: /* SDRAM_B3CR */
sdram_set_bcr(sdram, 3, val, sdram->cfg & 0x80000000);
break;
case 0x80: /* SDRAM_TR */
sdram->tr = val & 0x018FC01F;
break;
case 0x94: /* SDRAM_ECCCFG */
sdram->ecccfg = val & 0x00F00000;
break;
case 0x98: /* SDRAM_ECCESR */
val &= 0xFFF0F000;
if (sdram->eccesr == 0 && val != 0)
qemu_irq_raise(sdram->irq);
else if (sdram->eccesr != 0 && val == 0)
qemu_irq_lower(sdram->irq);
sdram->eccesr = val;
break;
default: /* Error */
break;
}
break;
}
}
static void sdram_reset (void *opaque)
{
ppc4xx_sdram_t *sdram;
sdram = opaque;
sdram->addr = 0x00000000;
sdram->bear = 0x00000000;
sdram->besr0 = 0x00000000; /* No error */
sdram->besr1 = 0x00000000; /* No error */
sdram->cfg = 0x00000000;
sdram->ecccfg = 0x00000000; /* No ECC */
sdram->eccesr = 0x00000000; /* No error */
sdram->pmit = 0x07C00000;
sdram->rtr = 0x05F00000;
sdram->tr = 0x00854009;
/* We pre-initialize RAM banks */
sdram->status = 0x00000000;
sdram->cfg = 0x00800000;
}
void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
MemoryRegion *ram_memories,
hwaddr *ram_bases,
hwaddr *ram_sizes,
int do_init)
{
ppc4xx_sdram_t *sdram;
sdram = g_new0(ppc4xx_sdram_t, 1);
sdram->irq = irq;
sdram->nbanks = nbanks;
sdram->ram_memories = ram_memories;
memset(sdram->ram_bases, 0, 4 * sizeof(hwaddr));
memcpy(sdram->ram_bases, ram_bases,
nbanks * sizeof(hwaddr));
memset(sdram->ram_sizes, 0, 4 * sizeof(hwaddr));
memcpy(sdram->ram_sizes, ram_sizes,
nbanks * sizeof(hwaddr));
qemu_register_reset(&sdram_reset, sdram);
ppc_dcr_register(env, SDRAM0_CFGADDR,
sdram, &dcr_read_sdram, &dcr_write_sdram);
ppc_dcr_register(env, SDRAM0_CFGDATA,
sdram, &dcr_read_sdram, &dcr_write_sdram);
if (do_init)
sdram_map_bcr(sdram);
}
/*
* Split RAM between SDRAM banks.
*
* sdram_bank_sizes[] must be in descending order, that is sizes[i] > sizes[i+1]
* and must be 0-terminated.
*
* The 4xx SDRAM controller supports a small number of banks, and each bank
* must be one of a small set of sizes. The number of banks and the supported
* sizes varies by SoC.
*/
void ppc4xx_sdram_banks(MemoryRegion *ram, int nr_banks,
MemoryRegion ram_memories[],
hwaddr ram_bases[], hwaddr ram_sizes[],
const ram_addr_t sdram_bank_sizes[])
{
ram_addr_t size_left = memory_region_size(ram);
ram_addr_t base = 0;
ram_addr_t bank_size;
int i;
int j;
for (i = 0; i < nr_banks; i++) {
for (j = 0; sdram_bank_sizes[j] != 0; j++) {
bank_size = sdram_bank_sizes[j];
if (bank_size <= size_left) {
char name[32];
ram_bases[i] = base;
ram_sizes[i] = bank_size;
base += bank_size;
size_left -= bank_size;
snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
memory_region_init_alias(&ram_memories[i], NULL, name, ram,
ram_bases[i], ram_sizes[i]);
break;
}
}
if (!size_left) {
/* No need to use the remaining banks. */
break;
}
}
if (size_left) {
ram_addr_t used_size = memory_region_size(ram) - size_left;
GString *s = g_string_new(NULL);
for (i = 0; sdram_bank_sizes[i]; i++) {
g_string_append_printf(s, "%" PRIi64 "%s",
sdram_bank_sizes[i] / MiB,
sdram_bank_sizes[i + 1] ? ", " : "");
}
error_report("at most %d bank%s of %s MiB each supported",
nr_banks, nr_banks == 1 ? "" : "s", s->str);
error_printf("Possible valid RAM size: %" PRIi64 " MiB \n",
used_size ? used_size / MiB : sdram_bank_sizes[i - 1] / MiB);
g_string_free(s, true);
exit(EXIT_FAILURE);
}
}
/*****************************************************************************/
/* MAL */
enum {
MAL0_CFG = 0x180,
MAL0_ESR = 0x181,
MAL0_IER = 0x182,
MAL0_TXCASR = 0x184,
MAL0_TXCARR = 0x185,
MAL0_TXEOBISR = 0x186,
MAL0_TXDEIR = 0x187,
MAL0_RXCASR = 0x190,
MAL0_RXCARR = 0x191,
MAL0_RXEOBISR = 0x192,
MAL0_RXDEIR = 0x193,
MAL0_TXCTP0R = 0x1A0,
MAL0_RXCTP0R = 0x1C0,
MAL0_RCBS0 = 0x1E0,
MAL0_RCBS1 = 0x1E1,
};
typedef struct ppc4xx_mal_t ppc4xx_mal_t;
struct ppc4xx_mal_t {
qemu_irq irqs[4];
uint32_t cfg;
uint32_t esr;
uint32_t ier;
uint32_t txcasr;
uint32_t txcarr;
uint32_t txeobisr;
uint32_t txdeir;
uint32_t rxcasr;
uint32_t rxcarr;
uint32_t rxeobisr;
uint32_t rxdeir;
uint32_t *txctpr;
uint32_t *rxctpr;
uint32_t *rcbs;
uint8_t txcnum;
uint8_t rxcnum;
};
static void ppc4xx_mal_reset(void *opaque)
{
ppc4xx_mal_t *mal;
mal = opaque;
mal->cfg = 0x0007C000;
mal->esr = 0x00000000;
mal->ier = 0x00000000;
mal->rxcasr = 0x00000000;
mal->rxdeir = 0x00000000;
mal->rxeobisr = 0x00000000;
mal->txcasr = 0x00000000;
mal->txdeir = 0x00000000;
mal->txeobisr = 0x00000000;
}
static uint32_t dcr_read_mal(void *opaque, int dcrn)
{
ppc4xx_mal_t *mal;
uint32_t ret;
mal = opaque;
switch (dcrn) {
case MAL0_CFG:
ret = mal->cfg;
break;
case MAL0_ESR:
ret = mal->esr;
break;
case MAL0_IER:
ret = mal->ier;
break;
case MAL0_TXCASR:
ret = mal->txcasr;
break;
case MAL0_TXCARR:
ret = mal->txcarr;
break;
case MAL0_TXEOBISR:
ret = mal->txeobisr;
break;
case MAL0_TXDEIR:
ret = mal->txdeir;
break;
case MAL0_RXCASR:
ret = mal->rxcasr;
break;
case MAL0_RXCARR:
ret = mal->rxcarr;
break;
case MAL0_RXEOBISR:
ret = mal->rxeobisr;
break;
case MAL0_RXDEIR:
ret = mal->rxdeir;
break;
default:
ret = 0;
break;
}
if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
ret = mal->txctpr[dcrn - MAL0_TXCTP0R];
}
if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
ret = mal->rxctpr[dcrn - MAL0_RXCTP0R];
}
if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
ret = mal->rcbs[dcrn - MAL0_RCBS0];
}
return ret;
}
static void dcr_write_mal(void *opaque, int dcrn, uint32_t val)
{
ppc4xx_mal_t *mal;
mal = opaque;
switch (dcrn) {
case MAL0_CFG:
if (val & 0x80000000) {
ppc4xx_mal_reset(mal);
}
mal->cfg = val & 0x00FFC087;
break;
case MAL0_ESR:
/* Read/clear */
mal->esr &= ~val;
break;
case MAL0_IER:
mal->ier = val & 0x0000001F;
break;
case MAL0_TXCASR:
mal->txcasr = val & 0xF0000000;
break;
case MAL0_TXCARR:
mal->txcarr = val & 0xF0000000;
break;
case MAL0_TXEOBISR:
/* Read/clear */
mal->txeobisr &= ~val;
break;
case MAL0_TXDEIR:
/* Read/clear */
mal->txdeir &= ~val;
break;
case MAL0_RXCASR:
mal->rxcasr = val & 0xC0000000;
break;
case MAL0_RXCARR:
mal->rxcarr = val & 0xC0000000;
break;
case MAL0_RXEOBISR:
/* Read/clear */
mal->rxeobisr &= ~val;
break;
case MAL0_RXDEIR:
/* Read/clear */
mal->rxdeir &= ~val;
break;
}
if (dcrn >= MAL0_TXCTP0R && dcrn < MAL0_TXCTP0R + mal->txcnum) {
mal->txctpr[dcrn - MAL0_TXCTP0R] = val;
}
if (dcrn >= MAL0_RXCTP0R && dcrn < MAL0_RXCTP0R + mal->rxcnum) {
mal->rxctpr[dcrn - MAL0_RXCTP0R] = val;
}
if (dcrn >= MAL0_RCBS0 && dcrn < MAL0_RCBS0 + mal->rxcnum) {
mal->rcbs[dcrn - MAL0_RCBS0] = val & 0x000000FF;
}
}
void ppc4xx_mal_init(CPUPPCState *env, uint8_t txcnum, uint8_t rxcnum,
qemu_irq irqs[4])
{
ppc4xx_mal_t *mal;
int i;
assert(txcnum <= 32 && rxcnum <= 32);
mal = g_malloc0(sizeof(*mal));
mal->txcnum = txcnum;
mal->rxcnum = rxcnum;
mal->txctpr = g_new0(uint32_t, txcnum);
mal->rxctpr = g_new0(uint32_t, rxcnum);
mal->rcbs = g_new0(uint32_t, rxcnum);
for (i = 0; i < 4; i++) {
mal->irqs[i] = irqs[i];
}
qemu_register_reset(&ppc4xx_mal_reset, mal);
ppc_dcr_register(env, MAL0_CFG,
mal, &dcr_read_mal, &dcr_write_mal);
ppc_dcr_register(env, MAL0_ESR,
mal, &dcr_read_mal, &dcr_write_mal);
ppc_dcr_register(env, MAL0_IER,
mal, &dcr_read_mal, &dcr_write_mal);
ppc_dcr_register(env, MAL0_TXCASR,
mal, &dcr_read_mal, &dcr_write_mal);
ppc_dcr_register(env, MAL0_TXCARR,
mal, &dcr_read_mal, &dcr_write_mal);
ppc_dcr_register(env, MAL0_TXEOBISR,
mal, &dcr_read_mal, &dcr_write_mal);
ppc_dcr_register(env, MAL0_TXDEIR,
mal, &dcr_read_mal, &dcr_write_mal);
ppc_dcr_register(env, MAL0_RXCASR,
mal, &dcr_read_mal, &dcr_write_mal);
ppc_dcr_register(env, MAL0_RXCARR,
mal, &dcr_read_mal, &dcr_write_mal);
ppc_dcr_register(env, MAL0_RXEOBISR,
mal, &dcr_read_mal, &dcr_write_mal);
ppc_dcr_register(env, MAL0_RXDEIR,
mal, &dcr_read_mal, &dcr_write_mal);
for (i = 0; i < txcnum; i++) {
ppc_dcr_register(env, MAL0_TXCTP0R + i,
mal, &dcr_read_mal, &dcr_write_mal);
}
for (i = 0; i < rxcnum; i++) {
ppc_dcr_register(env, MAL0_RXCTP0R + i,
mal, &dcr_read_mal, &dcr_write_mal);
}
for (i = 0; i < rxcnum; i++) {
ppc_dcr_register(env, MAL0_RCBS0 + i,
mal, &dcr_read_mal, &dcr_write_mal);
}
}