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xemu/hw/ppc/ppc405_uc.c
Thomas Huth 52144b69e4 hw/ppc: Move ppc40x_*reset() functions from ppc405_uc.c to ppc.c 
Currently, it is not possible to build a QEMU binary without the
ppc405_uc.c file, even if you do not want to have the embedded machines
in the binary. This is bad since it's quite a bit of code and this code
pulls in some more dependencies (e.g. via the usage of serial_mm_init())
which would not be needed otherwise - especially with the upcoming
Kconfig-style configuration system for QEMU.

The only functions from this file which are really always required for
linking are the ppc40x_*reset() functions, so move these functions to
ppc.c, close to the ppc40x_set_irq() function that calls them. Now we
can flag ppc405_uc.c and ppc4xx_devs.c with the CONFIG_PPC4XX config
switch, too.

And while we're at it, replace the printf()s in these ppc40x_*reset()
functions with proper calls to qemu_log_mask().

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2019-02-04 18:44:18 +11:00

1880 lines
51 KiB
C
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/*
* QEMU PowerPC 405 embedded processors 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 "qapi/error.h"
#include "qemu-common.h"
#include "cpu.h"
#include "hw/hw.h"
#include "hw/ppc/ppc.h"
#include "hw/boards.h"
#include "hw/i2c/ppc4xx_i2c.h"
#include "ppc405.h"
#include "hw/char/serial.h"
#include "qemu/timer.h"
#include "sysemu/sysemu.h"
#include "qemu/log.h"
#include "exec/address-spaces.h"
//#define DEBUG_OPBA
//#define DEBUG_SDRAM
//#define DEBUG_GPIO
//#define DEBUG_SERIAL
//#define DEBUG_OCM
//#define DEBUG_GPT
//#define DEBUG_CLOCKS
//#define DEBUG_CLOCKS_LL
ram_addr_t ppc405_set_bootinfo (CPUPPCState *env, ppc4xx_bd_info_t *bd,
uint32_t flags)
{
CPUState *cs = CPU(ppc_env_get_cpu(env));
ram_addr_t bdloc;
int i, n;
/* We put the bd structure at the top of memory */
if (bd->bi_memsize >= 0x01000000UL)
bdloc = 0x01000000UL - sizeof(struct ppc4xx_bd_info_t);
else
bdloc = bd->bi_memsize - sizeof(struct ppc4xx_bd_info_t);
stl_be_phys(cs->as, bdloc + 0x00, bd->bi_memstart);
stl_be_phys(cs->as, bdloc + 0x04, bd->bi_memsize);
stl_be_phys(cs->as, bdloc + 0x08, bd->bi_flashstart);
stl_be_phys(cs->as, bdloc + 0x0C, bd->bi_flashsize);
stl_be_phys(cs->as, bdloc + 0x10, bd->bi_flashoffset);
stl_be_phys(cs->as, bdloc + 0x14, bd->bi_sramstart);
stl_be_phys(cs->as, bdloc + 0x18, bd->bi_sramsize);
stl_be_phys(cs->as, bdloc + 0x1C, bd->bi_bootflags);
stl_be_phys(cs->as, bdloc + 0x20, bd->bi_ipaddr);
for (i = 0; i < 6; i++) {
stb_phys(cs->as, bdloc + 0x24 + i, bd->bi_enetaddr[i]);
}
stw_be_phys(cs->as, bdloc + 0x2A, bd->bi_ethspeed);
stl_be_phys(cs->as, bdloc + 0x2C, bd->bi_intfreq);
stl_be_phys(cs->as, bdloc + 0x30, bd->bi_busfreq);
stl_be_phys(cs->as, bdloc + 0x34, bd->bi_baudrate);
for (i = 0; i < 4; i++) {
stb_phys(cs->as, bdloc + 0x38 + i, bd->bi_s_version[i]);
}
for (i = 0; i < 32; i++) {
stb_phys(cs->as, bdloc + 0x3C + i, bd->bi_r_version[i]);
}
stl_be_phys(cs->as, bdloc + 0x5C, bd->bi_plb_busfreq);
stl_be_phys(cs->as, bdloc + 0x60, bd->bi_pci_busfreq);
for (i = 0; i < 6; i++) {
stb_phys(cs->as, bdloc + 0x64 + i, bd->bi_pci_enetaddr[i]);
}
n = 0x6A;
if (flags & 0x00000001) {
for (i = 0; i < 6; i++)
stb_phys(cs->as, bdloc + n++, bd->bi_pci_enetaddr2[i]);
}
stl_be_phys(cs->as, bdloc + n, bd->bi_opbfreq);
n += 4;
for (i = 0; i < 2; i++) {
stl_be_phys(cs->as, bdloc + n, bd->bi_iic_fast[i]);
n += 4;
}
return bdloc;
}
/*****************************************************************************/
/* Shared peripherals */
/*****************************************************************************/
/* Peripheral local bus arbitrer */
enum {
PLB3A0_ACR = 0x077,
PLB4A0_ACR = 0x081,
PLB0_BESR = 0x084,
PLB0_BEAR = 0x086,
PLB0_ACR = 0x087,
PLB4A1_ACR = 0x089,
};
typedef struct ppc4xx_plb_t ppc4xx_plb_t;
struct ppc4xx_plb_t {
uint32_t acr;
uint32_t bear;
uint32_t besr;
};
static uint32_t dcr_read_plb (void *opaque, int dcrn)
{
ppc4xx_plb_t *plb;
uint32_t ret;
plb = opaque;
switch (dcrn) {
case PLB0_ACR:
ret = plb->acr;
break;
case PLB0_BEAR:
ret = plb->bear;
break;
case PLB0_BESR:
ret = plb->besr;
break;
default:
/* Avoid gcc warning */
ret = 0;
break;
}
return ret;
}
static void dcr_write_plb (void *opaque, int dcrn, uint32_t val)
{
ppc4xx_plb_t *plb;
plb = opaque;
switch (dcrn) {
case PLB0_ACR:
/* We don't care about the actual parameters written as
* we don't manage any priorities on the bus
*/
plb->acr = val & 0xF8000000;
break;
case PLB0_BEAR:
/* Read only */
break;
case PLB0_BESR:
/* Write-clear */
plb->besr &= ~val;
break;
}
}
static void ppc4xx_plb_reset (void *opaque)
{
ppc4xx_plb_t *plb;
plb = opaque;
plb->acr = 0x00000000;
plb->bear = 0x00000000;
plb->besr = 0x00000000;
}
void ppc4xx_plb_init(CPUPPCState *env)
{
ppc4xx_plb_t *plb;
plb = g_malloc0(sizeof(ppc4xx_plb_t));
ppc_dcr_register(env, PLB3A0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
ppc_dcr_register(env, PLB4A0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
ppc_dcr_register(env, PLB0_ACR, plb, &dcr_read_plb, &dcr_write_plb);
ppc_dcr_register(env, PLB0_BEAR, plb, &dcr_read_plb, &dcr_write_plb);
ppc_dcr_register(env, PLB0_BESR, plb, &dcr_read_plb, &dcr_write_plb);
ppc_dcr_register(env, PLB4A1_ACR, plb, &dcr_read_plb, &dcr_write_plb);
qemu_register_reset(ppc4xx_plb_reset, plb);
}
/*****************************************************************************/
/* PLB to OPB bridge */
enum {
POB0_BESR0 = 0x0A0,
POB0_BESR1 = 0x0A2,
POB0_BEAR = 0x0A4,
};
typedef struct ppc4xx_pob_t ppc4xx_pob_t;
struct ppc4xx_pob_t {
uint32_t bear;
uint32_t besr0;
uint32_t besr1;
};
static uint32_t dcr_read_pob (void *opaque, int dcrn)
{
ppc4xx_pob_t *pob;
uint32_t ret;
pob = opaque;
switch (dcrn) {
case POB0_BEAR:
ret = pob->bear;
break;
case POB0_BESR0:
ret = pob->besr0;
break;
case POB0_BESR1:
ret = pob->besr1;
break;
default:
/* Avoid gcc warning */
ret = 0;
break;
}
return ret;
}
static void dcr_write_pob (void *opaque, int dcrn, uint32_t val)
{
ppc4xx_pob_t *pob;
pob = opaque;
switch (dcrn) {
case POB0_BEAR:
/* Read only */
break;
case POB0_BESR0:
/* Write-clear */
pob->besr0 &= ~val;
break;
case POB0_BESR1:
/* Write-clear */
pob->besr1 &= ~val;
break;
}
}
static void ppc4xx_pob_reset (void *opaque)
{
ppc4xx_pob_t *pob;
pob = opaque;
/* No error */
pob->bear = 0x00000000;
pob->besr0 = 0x0000000;
pob->besr1 = 0x0000000;
}
static void ppc4xx_pob_init(CPUPPCState *env)
{
ppc4xx_pob_t *pob;
pob = g_malloc0(sizeof(ppc4xx_pob_t));
ppc_dcr_register(env, POB0_BEAR, pob, &dcr_read_pob, &dcr_write_pob);
ppc_dcr_register(env, POB0_BESR0, pob, &dcr_read_pob, &dcr_write_pob);
ppc_dcr_register(env, POB0_BESR1, pob, &dcr_read_pob, &dcr_write_pob);
qemu_register_reset(ppc4xx_pob_reset, pob);
}
/*****************************************************************************/
/* OPB arbitrer */
typedef struct ppc4xx_opba_t ppc4xx_opba_t;
struct ppc4xx_opba_t {
MemoryRegion io;
uint8_t cr;
uint8_t pr;
};
static uint64_t opba_readb(void *opaque, hwaddr addr, unsigned size)
{
ppc4xx_opba_t *opba;
uint32_t ret;
#ifdef DEBUG_OPBA
printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
#endif
opba = opaque;
switch (addr) {
case 0x00:
ret = opba->cr;
break;
case 0x01:
ret = opba->pr;
break;
default:
ret = 0x00;
break;
}
return ret;
}
static void opba_writeb(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
ppc4xx_opba_t *opba;
#ifdef DEBUG_OPBA
printf("%s: addr " TARGET_FMT_plx " val %08" PRIx32 "\n", __func__, addr,
value);
#endif
opba = opaque;
switch (addr) {
case 0x00:
opba->cr = value & 0xF8;
break;
case 0x01:
opba->pr = value & 0xFF;
break;
default:
break;
}
}
static const MemoryRegionOps opba_ops = {
.read = opba_readb,
.write = opba_writeb,
.impl.min_access_size = 1,
.impl.max_access_size = 1,
.valid.min_access_size = 1,
.valid.max_access_size = 4,
.endianness = DEVICE_BIG_ENDIAN,
};
static void ppc4xx_opba_reset (void *opaque)
{
ppc4xx_opba_t *opba;
opba = opaque;
opba->cr = 0x00; /* No dynamic priorities - park disabled */
opba->pr = 0x11;
}
static void ppc4xx_opba_init(hwaddr base)
{
ppc4xx_opba_t *opba;
opba = g_malloc0(sizeof(ppc4xx_opba_t));
#ifdef DEBUG_OPBA
printf("%s: offset " TARGET_FMT_plx "\n", __func__, base);
#endif
memory_region_init_io(&opba->io, NULL, &opba_ops, opba, "opba", 0x002);
memory_region_add_subregion(get_system_memory(), base, &opba->io);
qemu_register_reset(ppc4xx_opba_reset, opba);
}
/*****************************************************************************/
/* Code decompression controller */
/* XXX: TODO */
/*****************************************************************************/
/* Peripheral controller */
typedef struct ppc4xx_ebc_t ppc4xx_ebc_t;
struct ppc4xx_ebc_t {
uint32_t addr;
uint32_t bcr[8];
uint32_t bap[8];
uint32_t bear;
uint32_t besr0;
uint32_t besr1;
uint32_t cfg;
};
enum {
EBC0_CFGADDR = 0x012,
EBC0_CFGDATA = 0x013,
};
static uint32_t dcr_read_ebc (void *opaque, int dcrn)
{
ppc4xx_ebc_t *ebc;
uint32_t ret;
ebc = opaque;
switch (dcrn) {
case EBC0_CFGADDR:
ret = ebc->addr;
break;
case EBC0_CFGDATA:
switch (ebc->addr) {
case 0x00: /* B0CR */
ret = ebc->bcr[0];
break;
case 0x01: /* B1CR */
ret = ebc->bcr[1];
break;
case 0x02: /* B2CR */
ret = ebc->bcr[2];
break;
case 0x03: /* B3CR */
ret = ebc->bcr[3];
break;
case 0x04: /* B4CR */
ret = ebc->bcr[4];
break;
case 0x05: /* B5CR */
ret = ebc->bcr[5];
break;
case 0x06: /* B6CR */
ret = ebc->bcr[6];
break;
case 0x07: /* B7CR */
ret = ebc->bcr[7];
break;
case 0x10: /* B0AP */
ret = ebc->bap[0];
break;
case 0x11: /* B1AP */
ret = ebc->bap[1];
break;
case 0x12: /* B2AP */
ret = ebc->bap[2];
break;
case 0x13: /* B3AP */
ret = ebc->bap[3];
break;
case 0x14: /* B4AP */
ret = ebc->bap[4];
break;
case 0x15: /* B5AP */
ret = ebc->bap[5];
break;
case 0x16: /* B6AP */
ret = ebc->bap[6];
break;
case 0x17: /* B7AP */
ret = ebc->bap[7];
break;
case 0x20: /* BEAR */
ret = ebc->bear;
break;
case 0x21: /* BESR0 */
ret = ebc->besr0;
break;
case 0x22: /* BESR1 */
ret = ebc->besr1;
break;
case 0x23: /* CFG */
ret = ebc->cfg;
break;
default:
ret = 0x00000000;
break;
}
break;
default:
ret = 0x00000000;
break;
}
return ret;
}
static void dcr_write_ebc (void *opaque, int dcrn, uint32_t val)
{
ppc4xx_ebc_t *ebc;
ebc = opaque;
switch (dcrn) {
case EBC0_CFGADDR:
ebc->addr = val;
break;
case EBC0_CFGDATA:
switch (ebc->addr) {
case 0x00: /* B0CR */
break;
case 0x01: /* B1CR */
break;
case 0x02: /* B2CR */
break;
case 0x03: /* B3CR */
break;
case 0x04: /* B4CR */
break;
case 0x05: /* B5CR */
break;
case 0x06: /* B6CR */
break;
case 0x07: /* B7CR */
break;
case 0x10: /* B0AP */
break;
case 0x11: /* B1AP */
break;
case 0x12: /* B2AP */
break;
case 0x13: /* B3AP */
break;
case 0x14: /* B4AP */
break;
case 0x15: /* B5AP */
break;
case 0x16: /* B6AP */
break;
case 0x17: /* B7AP */
break;
case 0x20: /* BEAR */
break;
case 0x21: /* BESR0 */
break;
case 0x22: /* BESR1 */
break;
case 0x23: /* CFG */
break;
default:
break;
}
break;
default:
break;
}
}
static void ebc_reset (void *opaque)
{
ppc4xx_ebc_t *ebc;
int i;
ebc = opaque;
ebc->addr = 0x00000000;
ebc->bap[0] = 0x7F8FFE80;
ebc->bcr[0] = 0xFFE28000;
for (i = 0; i < 8; i++) {
ebc->bap[i] = 0x00000000;
ebc->bcr[i] = 0x00000000;
}
ebc->besr0 = 0x00000000;
ebc->besr1 = 0x00000000;
ebc->cfg = 0x80400000;
}
void ppc405_ebc_init(CPUPPCState *env)
{
ppc4xx_ebc_t *ebc;
ebc = g_malloc0(sizeof(ppc4xx_ebc_t));
qemu_register_reset(&ebc_reset, ebc);
ppc_dcr_register(env, EBC0_CFGADDR,
ebc, &dcr_read_ebc, &dcr_write_ebc);
ppc_dcr_register(env, EBC0_CFGDATA,
ebc, &dcr_read_ebc, &dcr_write_ebc);
}
/*****************************************************************************/
/* DMA controller */
enum {
DMA0_CR0 = 0x100,
DMA0_CT0 = 0x101,
DMA0_DA0 = 0x102,
DMA0_SA0 = 0x103,
DMA0_SG0 = 0x104,
DMA0_CR1 = 0x108,
DMA0_CT1 = 0x109,
DMA0_DA1 = 0x10A,
DMA0_SA1 = 0x10B,
DMA0_SG1 = 0x10C,
DMA0_CR2 = 0x110,
DMA0_CT2 = 0x111,
DMA0_DA2 = 0x112,
DMA0_SA2 = 0x113,
DMA0_SG2 = 0x114,
DMA0_CR3 = 0x118,
DMA0_CT3 = 0x119,
DMA0_DA3 = 0x11A,
DMA0_SA3 = 0x11B,
DMA0_SG3 = 0x11C,
DMA0_SR = 0x120,
DMA0_SGC = 0x123,
DMA0_SLP = 0x125,
DMA0_POL = 0x126,
};
typedef struct ppc405_dma_t ppc405_dma_t;
struct ppc405_dma_t {
qemu_irq irqs[4];
uint32_t cr[4];
uint32_t ct[4];
uint32_t da[4];
uint32_t sa[4];
uint32_t sg[4];
uint32_t sr;
uint32_t sgc;
uint32_t slp;
uint32_t pol;
};
static uint32_t dcr_read_dma (void *opaque, int dcrn)
{
return 0;
}
static void dcr_write_dma (void *opaque, int dcrn, uint32_t val)
{
}
static void ppc405_dma_reset (void *opaque)
{
ppc405_dma_t *dma;
int i;
dma = opaque;
for (i = 0; i < 4; i++) {
dma->cr[i] = 0x00000000;
dma->ct[i] = 0x00000000;
dma->da[i] = 0x00000000;
dma->sa[i] = 0x00000000;
dma->sg[i] = 0x00000000;
}
dma->sr = 0x00000000;
dma->sgc = 0x00000000;
dma->slp = 0x7C000000;
dma->pol = 0x00000000;
}
static void ppc405_dma_init(CPUPPCState *env, qemu_irq irqs[4])
{
ppc405_dma_t *dma;
dma = g_malloc0(sizeof(ppc405_dma_t));
memcpy(dma->irqs, irqs, 4 * sizeof(qemu_irq));
qemu_register_reset(&ppc405_dma_reset, dma);
ppc_dcr_register(env, DMA0_CR0,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_CT0,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_DA0,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_SA0,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_SG0,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_CR1,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_CT1,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_DA1,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_SA1,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_SG1,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_CR2,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_CT2,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_DA2,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_SA2,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_SG2,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_CR3,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_CT3,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_DA3,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_SA3,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_SG3,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_SR,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_SGC,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_SLP,
dma, &dcr_read_dma, &dcr_write_dma);
ppc_dcr_register(env, DMA0_POL,
dma, &dcr_read_dma, &dcr_write_dma);
}
/*****************************************************************************/
/* GPIO */
typedef struct ppc405_gpio_t ppc405_gpio_t;
struct ppc405_gpio_t {
MemoryRegion io;
uint32_t or;
uint32_t tcr;
uint32_t osrh;
uint32_t osrl;
uint32_t tsrh;
uint32_t tsrl;
uint32_t odr;
uint32_t ir;
uint32_t rr1;
uint32_t isr1h;
uint32_t isr1l;
};
static uint64_t ppc405_gpio_read(void *opaque, hwaddr addr, unsigned size)
{
#ifdef DEBUG_GPIO
printf("%s: addr " TARGET_FMT_plx " size %d\n", __func__, addr, size);
#endif
return 0;
}
static void ppc405_gpio_write(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
#ifdef DEBUG_GPIO
printf("%s: addr " TARGET_FMT_plx " size %d val %08" PRIx32 "\n",
__func__, addr, size, value);
#endif
}
static const MemoryRegionOps ppc405_gpio_ops = {
.read = ppc405_gpio_read,
.write = ppc405_gpio_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void ppc405_gpio_reset (void *opaque)
{
}
static void ppc405_gpio_init(hwaddr base)
{
ppc405_gpio_t *gpio;
gpio = g_malloc0(sizeof(ppc405_gpio_t));
#ifdef DEBUG_GPIO
printf("%s: offset " TARGET_FMT_plx "\n", __func__, base);
#endif
memory_region_init_io(&gpio->io, NULL, &ppc405_gpio_ops, gpio, "pgio", 0x038);
memory_region_add_subregion(get_system_memory(), base, &gpio->io);
qemu_register_reset(&ppc405_gpio_reset, gpio);
}
/*****************************************************************************/
/* On Chip Memory */
enum {
OCM0_ISARC = 0x018,
OCM0_ISACNTL = 0x019,
OCM0_DSARC = 0x01A,
OCM0_DSACNTL = 0x01B,
};
typedef struct ppc405_ocm_t ppc405_ocm_t;
struct ppc405_ocm_t {
MemoryRegion ram;
MemoryRegion isarc_ram;
MemoryRegion dsarc_ram;
uint32_t isarc;
uint32_t isacntl;
uint32_t dsarc;
uint32_t dsacntl;
};
static void ocm_update_mappings (ppc405_ocm_t *ocm,
uint32_t isarc, uint32_t isacntl,
uint32_t dsarc, uint32_t dsacntl)
{
#ifdef DEBUG_OCM
printf("OCM update ISA %08" PRIx32 " %08" PRIx32 " (%08" PRIx32
" %08" PRIx32 ") DSA %08" PRIx32 " %08" PRIx32
" (%08" PRIx32 " %08" PRIx32 ")\n",
isarc, isacntl, dsarc, dsacntl,
ocm->isarc, ocm->isacntl, ocm->dsarc, ocm->dsacntl);
#endif
if (ocm->isarc != isarc ||
(ocm->isacntl & 0x80000000) != (isacntl & 0x80000000)) {
if (ocm->isacntl & 0x80000000) {
/* Unmap previously assigned memory region */
printf("OCM unmap ISA %08" PRIx32 "\n", ocm->isarc);
memory_region_del_subregion(get_system_memory(), &ocm->isarc_ram);
}
if (isacntl & 0x80000000) {
/* Map new instruction memory region */
#ifdef DEBUG_OCM
printf("OCM map ISA %08" PRIx32 "\n", isarc);
#endif
memory_region_add_subregion(get_system_memory(), isarc,
&ocm->isarc_ram);
}
}
if (ocm->dsarc != dsarc ||
(ocm->dsacntl & 0x80000000) != (dsacntl & 0x80000000)) {
if (ocm->dsacntl & 0x80000000) {
/* Beware not to unmap the region we just mapped */
if (!(isacntl & 0x80000000) || ocm->dsarc != isarc) {
/* Unmap previously assigned memory region */
#ifdef DEBUG_OCM
printf("OCM unmap DSA %08" PRIx32 "\n", ocm->dsarc);
#endif
memory_region_del_subregion(get_system_memory(),
&ocm->dsarc_ram);
}
}
if (dsacntl & 0x80000000) {
/* Beware not to remap the region we just mapped */
if (!(isacntl & 0x80000000) || dsarc != isarc) {
/* Map new data memory region */
#ifdef DEBUG_OCM
printf("OCM map DSA %08" PRIx32 "\n", dsarc);
#endif
memory_region_add_subregion(get_system_memory(), dsarc,
&ocm->dsarc_ram);
}
}
}
}
static uint32_t dcr_read_ocm (void *opaque, int dcrn)
{
ppc405_ocm_t *ocm;
uint32_t ret;
ocm = opaque;
switch (dcrn) {
case OCM0_ISARC:
ret = ocm->isarc;
break;
case OCM0_ISACNTL:
ret = ocm->isacntl;
break;
case OCM0_DSARC:
ret = ocm->dsarc;
break;
case OCM0_DSACNTL:
ret = ocm->dsacntl;
break;
default:
ret = 0;
break;
}
return ret;
}
static void dcr_write_ocm (void *opaque, int dcrn, uint32_t val)
{
ppc405_ocm_t *ocm;
uint32_t isarc, dsarc, isacntl, dsacntl;
ocm = opaque;
isarc = ocm->isarc;
dsarc = ocm->dsarc;
isacntl = ocm->isacntl;
dsacntl = ocm->dsacntl;
switch (dcrn) {
case OCM0_ISARC:
isarc = val & 0xFC000000;
break;
case OCM0_ISACNTL:
isacntl = val & 0xC0000000;
break;
case OCM0_DSARC:
isarc = val & 0xFC000000;
break;
case OCM0_DSACNTL:
isacntl = val & 0xC0000000;
break;
}
ocm_update_mappings(ocm, isarc, isacntl, dsarc, dsacntl);
ocm->isarc = isarc;
ocm->dsarc = dsarc;
ocm->isacntl = isacntl;
ocm->dsacntl = dsacntl;
}
static void ocm_reset (void *opaque)
{
ppc405_ocm_t *ocm;
uint32_t isarc, dsarc, isacntl, dsacntl;
ocm = opaque;
isarc = 0x00000000;
isacntl = 0x00000000;
dsarc = 0x00000000;
dsacntl = 0x00000000;
ocm_update_mappings(ocm, isarc, isacntl, dsarc, dsacntl);
ocm->isarc = isarc;
ocm->dsarc = dsarc;
ocm->isacntl = isacntl;
ocm->dsacntl = dsacntl;
}
static void ppc405_ocm_init(CPUPPCState *env)
{
ppc405_ocm_t *ocm;
ocm = g_malloc0(sizeof(ppc405_ocm_t));
/* XXX: Size is 4096 or 0x04000000 */
memory_region_init_ram(&ocm->isarc_ram, NULL, "ppc405.ocm", 4 * KiB,
&error_fatal);
memory_region_init_alias(&ocm->dsarc_ram, NULL, "ppc405.dsarc",
&ocm->isarc_ram, 0, 4 * KiB);
qemu_register_reset(&ocm_reset, ocm);
ppc_dcr_register(env, OCM0_ISARC,
ocm, &dcr_read_ocm, &dcr_write_ocm);
ppc_dcr_register(env, OCM0_ISACNTL,
ocm, &dcr_read_ocm, &dcr_write_ocm);
ppc_dcr_register(env, OCM0_DSARC,
ocm, &dcr_read_ocm, &dcr_write_ocm);
ppc_dcr_register(env, OCM0_DSACNTL,
ocm, &dcr_read_ocm, &dcr_write_ocm);
}
/*****************************************************************************/
/* General purpose timers */
typedef struct ppc4xx_gpt_t ppc4xx_gpt_t;
struct ppc4xx_gpt_t {
MemoryRegion iomem;
int64_t tb_offset;
uint32_t tb_freq;
QEMUTimer *timer;
qemu_irq irqs[5];
uint32_t oe;
uint32_t ol;
uint32_t im;
uint32_t is;
uint32_t ie;
uint32_t comp[5];
uint32_t mask[5];
};
static int ppc4xx_gpt_compare (ppc4xx_gpt_t *gpt, int n)
{
/* XXX: TODO */
return 0;
}
static void ppc4xx_gpt_set_output (ppc4xx_gpt_t *gpt, int n, int level)
{
/* XXX: TODO */
}
static void ppc4xx_gpt_set_outputs (ppc4xx_gpt_t *gpt)
{
uint32_t mask;
int i;
mask = 0x80000000;
for (i = 0; i < 5; i++) {
if (gpt->oe & mask) {
/* Output is enabled */
if (ppc4xx_gpt_compare(gpt, i)) {
/* Comparison is OK */
ppc4xx_gpt_set_output(gpt, i, gpt->ol & mask);
} else {
/* Comparison is KO */
ppc4xx_gpt_set_output(gpt, i, gpt->ol & mask ? 0 : 1);
}
}
mask = mask >> 1;
}
}
static void ppc4xx_gpt_set_irqs (ppc4xx_gpt_t *gpt)
{
uint32_t mask;
int i;
mask = 0x00008000;
for (i = 0; i < 5; i++) {
if (gpt->is & gpt->im & mask)
qemu_irq_raise(gpt->irqs[i]);
else
qemu_irq_lower(gpt->irqs[i]);
mask = mask >> 1;
}
}
static void ppc4xx_gpt_compute_timer (ppc4xx_gpt_t *gpt)
{
/* XXX: TODO */
}
static uint64_t ppc4xx_gpt_read(void *opaque, hwaddr addr, unsigned size)
{
ppc4xx_gpt_t *gpt;
uint32_t ret;
int idx;
#ifdef DEBUG_GPT
printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr);
#endif
gpt = opaque;
switch (addr) {
case 0x00:
/* Time base counter */
ret = muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + gpt->tb_offset,
gpt->tb_freq, NANOSECONDS_PER_SECOND);
break;
case 0x10:
/* Output enable */
ret = gpt->oe;
break;
case 0x14:
/* Output level */
ret = gpt->ol;
break;
case 0x18:
/* Interrupt mask */
ret = gpt->im;
break;
case 0x1C:
case 0x20:
/* Interrupt status */
ret = gpt->is;
break;
case 0x24:
/* Interrupt enable */
ret = gpt->ie;
break;
case 0x80 ... 0x90:
/* Compare timer */
idx = (addr - 0x80) >> 2;
ret = gpt->comp[idx];
break;
case 0xC0 ... 0xD0:
/* Compare mask */
idx = (addr - 0xC0) >> 2;
ret = gpt->mask[idx];
break;
default:
ret = -1;
break;
}
return ret;
}
static void ppc4xx_gpt_write(void *opaque, hwaddr addr, uint64_t value,
unsigned size)
{
ppc4xx_gpt_t *gpt;
int idx;
#ifdef DEBUG_I2C
printf("%s: addr " TARGET_FMT_plx " val %08" PRIx32 "\n", __func__, addr,
value);
#endif
gpt = opaque;
switch (addr) {
case 0x00:
/* Time base counter */
gpt->tb_offset = muldiv64(value, NANOSECONDS_PER_SECOND, gpt->tb_freq)
- qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
ppc4xx_gpt_compute_timer(gpt);
break;
case 0x10:
/* Output enable */
gpt->oe = value & 0xF8000000;
ppc4xx_gpt_set_outputs(gpt);
break;
case 0x14:
/* Output level */
gpt->ol = value & 0xF8000000;
ppc4xx_gpt_set_outputs(gpt);
break;
case 0x18:
/* Interrupt mask */
gpt->im = value & 0x0000F800;
break;
case 0x1C:
/* Interrupt status set */
gpt->is |= value & 0x0000F800;
ppc4xx_gpt_set_irqs(gpt);
break;
case 0x20:
/* Interrupt status clear */
gpt->is &= ~(value & 0x0000F800);
ppc4xx_gpt_set_irqs(gpt);
break;
case 0x24:
/* Interrupt enable */
gpt->ie = value & 0x0000F800;
ppc4xx_gpt_set_irqs(gpt);
break;
case 0x80 ... 0x90:
/* Compare timer */
idx = (addr - 0x80) >> 2;
gpt->comp[idx] = value & 0xF8000000;
ppc4xx_gpt_compute_timer(gpt);
break;
case 0xC0 ... 0xD0:
/* Compare mask */
idx = (addr - 0xC0) >> 2;
gpt->mask[idx] = value & 0xF8000000;
ppc4xx_gpt_compute_timer(gpt);
break;
}
}
static const MemoryRegionOps gpt_ops = {
.read = ppc4xx_gpt_read,
.write = ppc4xx_gpt_write,
.valid.min_access_size = 4,
.valid.max_access_size = 4,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void ppc4xx_gpt_cb (void *opaque)
{
ppc4xx_gpt_t *gpt;
gpt = opaque;
ppc4xx_gpt_set_irqs(gpt);
ppc4xx_gpt_set_outputs(gpt);
ppc4xx_gpt_compute_timer(gpt);
}
static void ppc4xx_gpt_reset (void *opaque)
{
ppc4xx_gpt_t *gpt;
int i;
gpt = opaque;
timer_del(gpt->timer);
gpt->oe = 0x00000000;
gpt->ol = 0x00000000;
gpt->im = 0x00000000;
gpt->is = 0x00000000;
gpt->ie = 0x00000000;
for (i = 0; i < 5; i++) {
gpt->comp[i] = 0x00000000;
gpt->mask[i] = 0x00000000;
}
}
static void ppc4xx_gpt_init(hwaddr base, qemu_irq irqs[5])
{
ppc4xx_gpt_t *gpt;
int i;
gpt = g_malloc0(sizeof(ppc4xx_gpt_t));
for (i = 0; i < 5; i++) {
gpt->irqs[i] = irqs[i];
}
gpt->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, &ppc4xx_gpt_cb, gpt);
#ifdef DEBUG_GPT
printf("%s: offset " TARGET_FMT_plx "\n", __func__, base);
#endif
memory_region_init_io(&gpt->iomem, NULL, &gpt_ops, gpt, "gpt", 0x0d4);
memory_region_add_subregion(get_system_memory(), base, &gpt->iomem);
qemu_register_reset(ppc4xx_gpt_reset, gpt);
}
/*****************************************************************************/
/* PowerPC 405CR */
enum {
PPC405CR_CPC0_PLLMR = 0x0B0,
PPC405CR_CPC0_CR0 = 0x0B1,
PPC405CR_CPC0_CR1 = 0x0B2,
PPC405CR_CPC0_PSR = 0x0B4,
PPC405CR_CPC0_JTAGID = 0x0B5,
PPC405CR_CPC0_ER = 0x0B9,
PPC405CR_CPC0_FR = 0x0BA,
PPC405CR_CPC0_SR = 0x0BB,
};
enum {
PPC405CR_CPU_CLK = 0,
PPC405CR_TMR_CLK = 1,
PPC405CR_PLB_CLK = 2,
PPC405CR_SDRAM_CLK = 3,
PPC405CR_OPB_CLK = 4,
PPC405CR_EXT_CLK = 5,
PPC405CR_UART_CLK = 6,
PPC405CR_CLK_NB = 7,
};
typedef struct ppc405cr_cpc_t ppc405cr_cpc_t;
struct ppc405cr_cpc_t {
clk_setup_t clk_setup[PPC405CR_CLK_NB];
uint32_t sysclk;
uint32_t psr;
uint32_t cr0;
uint32_t cr1;
uint32_t jtagid;
uint32_t pllmr;
uint32_t er;
uint32_t fr;
};
static void ppc405cr_clk_setup (ppc405cr_cpc_t *cpc)
{
uint64_t VCO_out, PLL_out;
uint32_t CPU_clk, TMR_clk, SDRAM_clk, PLB_clk, OPB_clk, EXT_clk, UART_clk;
int M, D0, D1, D2;
D0 = ((cpc->pllmr >> 26) & 0x3) + 1; /* CBDV */
if (cpc->pllmr & 0x80000000) {
D1 = (((cpc->pllmr >> 20) - 1) & 0xF) + 1; /* FBDV */
D2 = 8 - ((cpc->pllmr >> 16) & 0x7); /* FWDVA */
M = D0 * D1 * D2;
VCO_out = (uint64_t)cpc->sysclk * M;
if (VCO_out < 400000000 || VCO_out > 800000000) {
/* PLL cannot lock */
cpc->pllmr &= ~0x80000000;
goto bypass_pll;
}
PLL_out = VCO_out / D2;
} else {
/* Bypass PLL */
bypass_pll:
M = D0;
PLL_out = (uint64_t)cpc->sysclk * M;
}
CPU_clk = PLL_out;
if (cpc->cr1 & 0x00800000)
TMR_clk = cpc->sysclk; /* Should have a separate clock */
else
TMR_clk = CPU_clk;
PLB_clk = CPU_clk / D0;
SDRAM_clk = PLB_clk;
D0 = ((cpc->pllmr >> 10) & 0x3) + 1;
OPB_clk = PLB_clk / D0;
D0 = ((cpc->pllmr >> 24) & 0x3) + 2;
EXT_clk = PLB_clk / D0;
D0 = ((cpc->cr0 >> 1) & 0x1F) + 1;
UART_clk = CPU_clk / D0;
/* Setup CPU clocks */
clk_setup(&cpc->clk_setup[PPC405CR_CPU_CLK], CPU_clk);
/* Setup time-base clock */
clk_setup(&cpc->clk_setup[PPC405CR_TMR_CLK], TMR_clk);
/* Setup PLB clock */
clk_setup(&cpc->clk_setup[PPC405CR_PLB_CLK], PLB_clk);
/* Setup SDRAM clock */
clk_setup(&cpc->clk_setup[PPC405CR_SDRAM_CLK], SDRAM_clk);
/* Setup OPB clock */
clk_setup(&cpc->clk_setup[PPC405CR_OPB_CLK], OPB_clk);
/* Setup external clock */
clk_setup(&cpc->clk_setup[PPC405CR_EXT_CLK], EXT_clk);
/* Setup UART clock */
clk_setup(&cpc->clk_setup[PPC405CR_UART_CLK], UART_clk);
}
static uint32_t dcr_read_crcpc (void *opaque, int dcrn)
{
ppc405cr_cpc_t *cpc;
uint32_t ret;
cpc = opaque;
switch (dcrn) {
case PPC405CR_CPC0_PLLMR:
ret = cpc->pllmr;
break;
case PPC405CR_CPC0_CR0:
ret = cpc->cr0;
break;
case PPC405CR_CPC0_CR1:
ret = cpc->cr1;
break;
case PPC405CR_CPC0_PSR:
ret = cpc->psr;
break;
case PPC405CR_CPC0_JTAGID:
ret = cpc->jtagid;
break;
case PPC405CR_CPC0_ER:
ret = cpc->er;
break;
case PPC405CR_CPC0_FR:
ret = cpc->fr;
break;
case PPC405CR_CPC0_SR:
ret = ~(cpc->er | cpc->fr) & 0xFFFF0000;
break;
default:
/* Avoid gcc warning */
ret = 0;
break;
}
return ret;
}
static void dcr_write_crcpc (void *opaque, int dcrn, uint32_t val)
{
ppc405cr_cpc_t *cpc;
cpc = opaque;
switch (dcrn) {
case PPC405CR_CPC0_PLLMR:
cpc->pllmr = val & 0xFFF77C3F;
break;
case PPC405CR_CPC0_CR0:
cpc->cr0 = val & 0x0FFFFFFE;
break;
case PPC405CR_CPC0_CR1:
cpc->cr1 = val & 0x00800000;
break;
case PPC405CR_CPC0_PSR:
/* Read-only */
break;
case PPC405CR_CPC0_JTAGID:
/* Read-only */
break;
case PPC405CR_CPC0_ER:
cpc->er = val & 0xBFFC0000;
break;
case PPC405CR_CPC0_FR:
cpc->fr = val & 0xBFFC0000;
break;
case PPC405CR_CPC0_SR:
/* Read-only */
break;
}
}
static void ppc405cr_cpc_reset (void *opaque)
{
ppc405cr_cpc_t *cpc;
int D;
cpc = opaque;
/* Compute PLLMR value from PSR settings */
cpc->pllmr = 0x80000000;
/* PFWD */
switch ((cpc->psr >> 30) & 3) {
case 0:
/* Bypass */
cpc->pllmr &= ~0x80000000;
break;
case 1:
/* Divide by 3 */
cpc->pllmr |= 5 << 16;
break;
case 2:
/* Divide by 4 */
cpc->pllmr |= 4 << 16;
break;
case 3:
/* Divide by 6 */
cpc->pllmr |= 2 << 16;
break;
}
/* PFBD */
D = (cpc->psr >> 28) & 3;
cpc->pllmr |= (D + 1) << 20;
/* PT */
D = (cpc->psr >> 25) & 7;
switch (D) {
case 0x2:
cpc->pllmr |= 0x13;
break;
case 0x4:
cpc->pllmr |= 0x15;
break;
case 0x5:
cpc->pllmr |= 0x16;
break;
default:
break;
}
/* PDC */
D = (cpc->psr >> 23) & 3;
cpc->pllmr |= D << 26;
/* ODP */
D = (cpc->psr >> 21) & 3;
cpc->pllmr |= D << 10;
/* EBPD */
D = (cpc->psr >> 17) & 3;
cpc->pllmr |= D << 24;
cpc->cr0 = 0x0000003C;
cpc->cr1 = 0x2B0D8800;
cpc->er = 0x00000000;
cpc->fr = 0x00000000;
ppc405cr_clk_setup(cpc);
}
static void ppc405cr_clk_init (ppc405cr_cpc_t *cpc)
{
int D;
/* XXX: this should be read from IO pins */
cpc->psr = 0x00000000; /* 8 bits ROM */
/* PFWD */
D = 0x2; /* Divide by 4 */
cpc->psr |= D << 30;
/* PFBD */
D = 0x1; /* Divide by 2 */
cpc->psr |= D << 28;
/* PDC */
D = 0x1; /* Divide by 2 */
cpc->psr |= D << 23;
/* PT */
D = 0x5; /* M = 16 */
cpc->psr |= D << 25;
/* ODP */
D = 0x1; /* Divide by 2 */
cpc->psr |= D << 21;
/* EBDP */
D = 0x2; /* Divide by 4 */
cpc->psr |= D << 17;
}
static void ppc405cr_cpc_init (CPUPPCState *env, clk_setup_t clk_setup[7],
uint32_t sysclk)
{
ppc405cr_cpc_t *cpc;
cpc = g_malloc0(sizeof(ppc405cr_cpc_t));
memcpy(cpc->clk_setup, clk_setup,
PPC405CR_CLK_NB * sizeof(clk_setup_t));
cpc->sysclk = sysclk;
cpc->jtagid = 0x42051049;
ppc_dcr_register(env, PPC405CR_CPC0_PSR, cpc,
&dcr_read_crcpc, &dcr_write_crcpc);
ppc_dcr_register(env, PPC405CR_CPC0_CR0, cpc,
&dcr_read_crcpc, &dcr_write_crcpc);
ppc_dcr_register(env, PPC405CR_CPC0_CR1, cpc,
&dcr_read_crcpc, &dcr_write_crcpc);
ppc_dcr_register(env, PPC405CR_CPC0_JTAGID, cpc,
&dcr_read_crcpc, &dcr_write_crcpc);
ppc_dcr_register(env, PPC405CR_CPC0_PLLMR, cpc,
&dcr_read_crcpc, &dcr_write_crcpc);
ppc_dcr_register(env, PPC405CR_CPC0_ER, cpc,
&dcr_read_crcpc, &dcr_write_crcpc);
ppc_dcr_register(env, PPC405CR_CPC0_FR, cpc,
&dcr_read_crcpc, &dcr_write_crcpc);
ppc_dcr_register(env, PPC405CR_CPC0_SR, cpc,
&dcr_read_crcpc, &dcr_write_crcpc);
ppc405cr_clk_init(cpc);
qemu_register_reset(ppc405cr_cpc_reset, cpc);
}
CPUPPCState *ppc405cr_init(MemoryRegion *address_space_mem,
MemoryRegion ram_memories[4],
hwaddr ram_bases[4],
hwaddr ram_sizes[4],
uint32_t sysclk, qemu_irq **picp,
int do_init)
{
clk_setup_t clk_setup[PPC405CR_CLK_NB];
qemu_irq dma_irqs[4];
PowerPCCPU *cpu;
CPUPPCState *env;
qemu_irq *pic, *irqs;
memset(clk_setup, 0, sizeof(clk_setup));
cpu = ppc4xx_init(POWERPC_CPU_TYPE_NAME("405crc"),
&clk_setup[PPC405CR_CPU_CLK],
&clk_setup[PPC405CR_TMR_CLK], sysclk);
env = &cpu->env;
/* Memory mapped devices registers */
/* PLB arbitrer */
ppc4xx_plb_init(env);
/* PLB to OPB bridge */
ppc4xx_pob_init(env);
/* OBP arbitrer */
ppc4xx_opba_init(0xef600600);
/* Universal interrupt controller */
irqs = g_new0(qemu_irq, PPCUIC_OUTPUT_NB);
irqs[PPCUIC_OUTPUT_INT] =
((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
irqs[PPCUIC_OUTPUT_CINT] =
((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
pic = ppcuic_init(env, irqs, 0x0C0, 0, 1);
*picp = pic;
/* SDRAM controller */
ppc4xx_sdram_init(env, pic[14], 1, ram_memories,
ram_bases, ram_sizes, do_init);
/* External bus controller */
ppc405_ebc_init(env);
/* DMA controller */
dma_irqs[0] = pic[26];
dma_irqs[1] = pic[25];
dma_irqs[2] = pic[24];
dma_irqs[3] = pic[23];
ppc405_dma_init(env, dma_irqs);
/* Serial ports */
if (serial_hd(0) != NULL) {
serial_mm_init(address_space_mem, 0xef600300, 0, pic[0],
PPC_SERIAL_MM_BAUDBASE, serial_hd(0),
DEVICE_BIG_ENDIAN);
}
if (serial_hd(1) != NULL) {
serial_mm_init(address_space_mem, 0xef600400, 0, pic[1],
PPC_SERIAL_MM_BAUDBASE, serial_hd(1),
DEVICE_BIG_ENDIAN);
}
/* IIC controller */
sysbus_create_simple(TYPE_PPC4xx_I2C, 0xef600500, pic[2]);
/* GPIO */
ppc405_gpio_init(0xef600700);
/* CPU control */
ppc405cr_cpc_init(env, clk_setup, sysclk);
return env;
}
/*****************************************************************************/
/* PowerPC 405EP */
/* CPU control */
enum {
PPC405EP_CPC0_PLLMR0 = 0x0F0,
PPC405EP_CPC0_BOOT = 0x0F1,
PPC405EP_CPC0_EPCTL = 0x0F3,
PPC405EP_CPC0_PLLMR1 = 0x0F4,
PPC405EP_CPC0_UCR = 0x0F5,
PPC405EP_CPC0_SRR = 0x0F6,
PPC405EP_CPC0_JTAGID = 0x0F7,
PPC405EP_CPC0_PCI = 0x0F9,
#if 0
PPC405EP_CPC0_ER = xxx,
PPC405EP_CPC0_FR = xxx,
PPC405EP_CPC0_SR = xxx,
#endif
};
enum {
PPC405EP_CPU_CLK = 0,
PPC405EP_PLB_CLK = 1,
PPC405EP_OPB_CLK = 2,
PPC405EP_EBC_CLK = 3,
PPC405EP_MAL_CLK = 4,
PPC405EP_PCI_CLK = 5,
PPC405EP_UART0_CLK = 6,
PPC405EP_UART1_CLK = 7,
PPC405EP_CLK_NB = 8,
};
typedef struct ppc405ep_cpc_t ppc405ep_cpc_t;
struct ppc405ep_cpc_t {
uint32_t sysclk;
clk_setup_t clk_setup[PPC405EP_CLK_NB];
uint32_t boot;
uint32_t epctl;
uint32_t pllmr[2];
uint32_t ucr;
uint32_t srr;
uint32_t jtagid;
uint32_t pci;
/* Clock and power management */
uint32_t er;
uint32_t fr;
uint32_t sr;
};
static void ppc405ep_compute_clocks (ppc405ep_cpc_t *cpc)
{
uint32_t CPU_clk, PLB_clk, OPB_clk, EBC_clk, MAL_clk, PCI_clk;
uint32_t UART0_clk, UART1_clk;
uint64_t VCO_out, PLL_out;
int M, D;
VCO_out = 0;
if ((cpc->pllmr[1] & 0x80000000) && !(cpc->pllmr[1] & 0x40000000)) {
M = (((cpc->pllmr[1] >> 20) - 1) & 0xF) + 1; /* FBMUL */
#ifdef DEBUG_CLOCKS_LL
printf("FBMUL %01" PRIx32 " %d\n", (cpc->pllmr[1] >> 20) & 0xF, M);
#endif
D = 8 - ((cpc->pllmr[1] >> 16) & 0x7); /* FWDA */
#ifdef DEBUG_CLOCKS_LL
printf("FWDA %01" PRIx32 " %d\n", (cpc->pllmr[1] >> 16) & 0x7, D);
#endif
VCO_out = (uint64_t)cpc->sysclk * M * D;
if (VCO_out < 500000000UL || VCO_out > 1000000000UL) {
/* Error - unlock the PLL */
printf("VCO out of range %" PRIu64 "\n", VCO_out);
#if 0
cpc->pllmr[1] &= ~0x80000000;
goto pll_bypass;
#endif
}
PLL_out = VCO_out / D;
/* Pretend the PLL is locked */
cpc->boot |= 0x00000001;
} else {
#if 0
pll_bypass:
#endif
PLL_out = cpc->sysclk;
if (cpc->pllmr[1] & 0x40000000) {
/* Pretend the PLL is not locked */
cpc->boot &= ~0x00000001;
}
}
/* Now, compute all other clocks */
D = ((cpc->pllmr[0] >> 20) & 0x3) + 1; /* CCDV */
#ifdef DEBUG_CLOCKS_LL
printf("CCDV %01" PRIx32 " %d\n", (cpc->pllmr[0] >> 20) & 0x3, D);
#endif
CPU_clk = PLL_out / D;
D = ((cpc->pllmr[0] >> 16) & 0x3) + 1; /* CBDV */
#ifdef DEBUG_CLOCKS_LL
printf("CBDV %01" PRIx32 " %d\n", (cpc->pllmr[0] >> 16) & 0x3, D);
#endif
PLB_clk = CPU_clk / D;
D = ((cpc->pllmr[0] >> 12) & 0x3) + 1; /* OPDV */
#ifdef DEBUG_CLOCKS_LL
printf("OPDV %01" PRIx32 " %d\n", (cpc->pllmr[0] >> 12) & 0x3, D);
#endif
OPB_clk = PLB_clk / D;
D = ((cpc->pllmr[0] >> 8) & 0x3) + 2; /* EPDV */
#ifdef DEBUG_CLOCKS_LL
printf("EPDV %01" PRIx32 " %d\n", (cpc->pllmr[0] >> 8) & 0x3, D);
#endif
EBC_clk = PLB_clk / D;
D = ((cpc->pllmr[0] >> 4) & 0x3) + 1; /* MPDV */
#ifdef DEBUG_CLOCKS_LL
printf("MPDV %01" PRIx32 " %d\n", (cpc->pllmr[0] >> 4) & 0x3, D);
#endif
MAL_clk = PLB_clk / D;
D = (cpc->pllmr[0] & 0x3) + 1; /* PPDV */
#ifdef DEBUG_CLOCKS_LL
printf("PPDV %01" PRIx32 " %d\n", cpc->pllmr[0] & 0x3, D);
#endif
PCI_clk = PLB_clk / D;
D = ((cpc->ucr - 1) & 0x7F) + 1; /* U0DIV */
#ifdef DEBUG_CLOCKS_LL
printf("U0DIV %01" PRIx32 " %d\n", cpc->ucr & 0x7F, D);
#endif
UART0_clk = PLL_out / D;
D = (((cpc->ucr >> 8) - 1) & 0x7F) + 1; /* U1DIV */
#ifdef DEBUG_CLOCKS_LL
printf("U1DIV %01" PRIx32 " %d\n", (cpc->ucr >> 8) & 0x7F, D);
#endif
UART1_clk = PLL_out / D;
#ifdef DEBUG_CLOCKS
printf("Setup PPC405EP clocks - sysclk %" PRIu32 " VCO %" PRIu64
" PLL out %" PRIu64 " Hz\n", cpc->sysclk, VCO_out, PLL_out);
printf("CPU %" PRIu32 " PLB %" PRIu32 " OPB %" PRIu32 " EBC %" PRIu32
" MAL %" PRIu32 " PCI %" PRIu32 " UART0 %" PRIu32
" UART1 %" PRIu32 "\n",
CPU_clk, PLB_clk, OPB_clk, EBC_clk, MAL_clk, PCI_clk,
UART0_clk, UART1_clk);
#endif
/* Setup CPU clocks */
clk_setup(&cpc->clk_setup[PPC405EP_CPU_CLK], CPU_clk);
/* Setup PLB clock */
clk_setup(&cpc->clk_setup[PPC405EP_PLB_CLK], PLB_clk);
/* Setup OPB clock */
clk_setup(&cpc->clk_setup[PPC405EP_OPB_CLK], OPB_clk);
/* Setup external clock */
clk_setup(&cpc->clk_setup[PPC405EP_EBC_CLK], EBC_clk);
/* Setup MAL clock */
clk_setup(&cpc->clk_setup[PPC405EP_MAL_CLK], MAL_clk);
/* Setup PCI clock */
clk_setup(&cpc->clk_setup[PPC405EP_PCI_CLK], PCI_clk);
/* Setup UART0 clock */
clk_setup(&cpc->clk_setup[PPC405EP_UART0_CLK], UART0_clk);
/* Setup UART1 clock */
clk_setup(&cpc->clk_setup[PPC405EP_UART1_CLK], UART1_clk);
}
static uint32_t dcr_read_epcpc (void *opaque, int dcrn)
{
ppc405ep_cpc_t *cpc;
uint32_t ret;
cpc = opaque;
switch (dcrn) {
case PPC405EP_CPC0_BOOT:
ret = cpc->boot;
break;
case PPC405EP_CPC0_EPCTL:
ret = cpc->epctl;
break;
case PPC405EP_CPC0_PLLMR0:
ret = cpc->pllmr[0];
break;
case PPC405EP_CPC0_PLLMR1:
ret = cpc->pllmr[1];
break;
case PPC405EP_CPC0_UCR:
ret = cpc->ucr;
break;
case PPC405EP_CPC0_SRR:
ret = cpc->srr;
break;
case PPC405EP_CPC0_JTAGID:
ret = cpc->jtagid;
break;
case PPC405EP_CPC0_PCI:
ret = cpc->pci;
break;
default:
/* Avoid gcc warning */
ret = 0;
break;
}
return ret;
}
static void dcr_write_epcpc (void *opaque, int dcrn, uint32_t val)
{
ppc405ep_cpc_t *cpc;
cpc = opaque;
switch (dcrn) {
case PPC405EP_CPC0_BOOT:
/* Read-only register */
break;
case PPC405EP_CPC0_EPCTL:
/* Don't care for now */
cpc->epctl = val & 0xC00000F3;
break;
case PPC405EP_CPC0_PLLMR0:
cpc->pllmr[0] = val & 0x00633333;
ppc405ep_compute_clocks(cpc);
break;
case PPC405EP_CPC0_PLLMR1:
cpc->pllmr[1] = val & 0xC0F73FFF;
ppc405ep_compute_clocks(cpc);
break;
case PPC405EP_CPC0_UCR:
/* UART control - don't care for now */
cpc->ucr = val & 0x003F7F7F;
break;
case PPC405EP_CPC0_SRR:
cpc->srr = val;
break;
case PPC405EP_CPC0_JTAGID:
/* Read-only */
break;
case PPC405EP_CPC0_PCI:
cpc->pci = val;
break;
}
}
static void ppc405ep_cpc_reset (void *opaque)
{
ppc405ep_cpc_t *cpc = opaque;
cpc->boot = 0x00000010; /* Boot from PCI - IIC EEPROM disabled */
cpc->epctl = 0x00000000;
cpc->pllmr[0] = 0x00011010;
cpc->pllmr[1] = 0x40000000;
cpc->ucr = 0x00000000;
cpc->srr = 0x00040000;
cpc->pci = 0x00000000;
cpc->er = 0x00000000;
cpc->fr = 0x00000000;
cpc->sr = 0x00000000;
ppc405ep_compute_clocks(cpc);
}
/* XXX: sysclk should be between 25 and 100 MHz */
static void ppc405ep_cpc_init (CPUPPCState *env, clk_setup_t clk_setup[8],
uint32_t sysclk)
{
ppc405ep_cpc_t *cpc;
cpc = g_malloc0(sizeof(ppc405ep_cpc_t));
memcpy(cpc->clk_setup, clk_setup,
PPC405EP_CLK_NB * sizeof(clk_setup_t));
cpc->jtagid = 0x20267049;
cpc->sysclk = sysclk;
qemu_register_reset(&ppc405ep_cpc_reset, cpc);
ppc_dcr_register(env, PPC405EP_CPC0_BOOT, cpc,
&dcr_read_epcpc, &dcr_write_epcpc);
ppc_dcr_register(env, PPC405EP_CPC0_EPCTL, cpc,
&dcr_read_epcpc, &dcr_write_epcpc);
ppc_dcr_register(env, PPC405EP_CPC0_PLLMR0, cpc,
&dcr_read_epcpc, &dcr_write_epcpc);
ppc_dcr_register(env, PPC405EP_CPC0_PLLMR1, cpc,
&dcr_read_epcpc, &dcr_write_epcpc);
ppc_dcr_register(env, PPC405EP_CPC0_UCR, cpc,
&dcr_read_epcpc, &dcr_write_epcpc);
ppc_dcr_register(env, PPC405EP_CPC0_SRR, cpc,
&dcr_read_epcpc, &dcr_write_epcpc);
ppc_dcr_register(env, PPC405EP_CPC0_JTAGID, cpc,
&dcr_read_epcpc, &dcr_write_epcpc);
ppc_dcr_register(env, PPC405EP_CPC0_PCI, cpc,
&dcr_read_epcpc, &dcr_write_epcpc);
#if 0
ppc_dcr_register(env, PPC405EP_CPC0_ER, cpc,
&dcr_read_epcpc, &dcr_write_epcpc);
ppc_dcr_register(env, PPC405EP_CPC0_FR, cpc,
&dcr_read_epcpc, &dcr_write_epcpc);
ppc_dcr_register(env, PPC405EP_CPC0_SR, cpc,
&dcr_read_epcpc, &dcr_write_epcpc);
#endif
}
CPUPPCState *ppc405ep_init(MemoryRegion *address_space_mem,
MemoryRegion ram_memories[2],
hwaddr ram_bases[2],
hwaddr ram_sizes[2],
uint32_t sysclk, qemu_irq **picp,
int do_init)
{
clk_setup_t clk_setup[PPC405EP_CLK_NB], tlb_clk_setup;
qemu_irq dma_irqs[4], gpt_irqs[5], mal_irqs[4];
PowerPCCPU *cpu;
CPUPPCState *env;
qemu_irq *pic, *irqs;
memset(clk_setup, 0, sizeof(clk_setup));
/* init CPUs */
cpu = ppc4xx_init(POWERPC_CPU_TYPE_NAME("405ep"),
&clk_setup[PPC405EP_CPU_CLK],
&tlb_clk_setup, sysclk);
env = &cpu->env;
clk_setup[PPC405EP_CPU_CLK].cb = tlb_clk_setup.cb;
clk_setup[PPC405EP_CPU_CLK].opaque = tlb_clk_setup.opaque;
/* Internal devices init */
/* Memory mapped devices registers */
/* PLB arbitrer */
ppc4xx_plb_init(env);
/* PLB to OPB bridge */
ppc4xx_pob_init(env);
/* OBP arbitrer */
ppc4xx_opba_init(0xef600600);
/* Initialize timers */
ppc_booke_timers_init(cpu, sysclk, 0);
/* Universal interrupt controller */
irqs = g_new0(qemu_irq, PPCUIC_OUTPUT_NB);
irqs[PPCUIC_OUTPUT_INT] =
((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_INT];
irqs[PPCUIC_OUTPUT_CINT] =
((qemu_irq *)env->irq_inputs)[PPC40x_INPUT_CINT];
pic = ppcuic_init(env, irqs, 0x0C0, 0, 1);
*picp = pic;
/* SDRAM controller */
/* XXX 405EP has no ECC interrupt */
ppc4xx_sdram_init(env, pic[17], 2, ram_memories,
ram_bases, ram_sizes, do_init);
/* External bus controller */
ppc405_ebc_init(env);
/* DMA controller */
dma_irqs[0] = pic[5];
dma_irqs[1] = pic[6];
dma_irqs[2] = pic[7];
dma_irqs[3] = pic[8];
ppc405_dma_init(env, dma_irqs);
/* IIC controller */
sysbus_create_simple(TYPE_PPC4xx_I2C, 0xef600500, pic[2]);
/* GPIO */
ppc405_gpio_init(0xef600700);
/* Serial ports */
if (serial_hd(0) != NULL) {
serial_mm_init(address_space_mem, 0xef600300, 0, pic[0],
PPC_SERIAL_MM_BAUDBASE, serial_hd(0),
DEVICE_BIG_ENDIAN);
}
if (serial_hd(1) != NULL) {
serial_mm_init(address_space_mem, 0xef600400, 0, pic[1],
PPC_SERIAL_MM_BAUDBASE, serial_hd(1),
DEVICE_BIG_ENDIAN);
}
/* OCM */
ppc405_ocm_init(env);
/* GPT */
gpt_irqs[0] = pic[19];
gpt_irqs[1] = pic[20];
gpt_irqs[2] = pic[21];
gpt_irqs[3] = pic[22];
gpt_irqs[4] = pic[23];
ppc4xx_gpt_init(0xef600000, gpt_irqs);
/* PCI */
/* Uses pic[3], pic[16], pic[18] */
/* MAL */
mal_irqs[0] = pic[11];
mal_irqs[1] = pic[12];
mal_irqs[2] = pic[13];
mal_irqs[3] = pic[14];
ppc4xx_mal_init(env, 4, 2, mal_irqs);
/* Ethernet */
/* Uses pic[9], pic[15], pic[17] */
/* CPU control */
ppc405ep_cpc_init(env, clk_setup, sysclk);
return env;
}
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