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qemu-patch-raspberry4/hw/ppc/ppc405_boards.c
thuth@redhat.com 64b47457da ppc: Deprecate qemu-system-ppcemb 
qemu-system-ppcemb has been once split of qemu-system-ppc to support
CPU page sizes < 4096 for some of the embedded 4xx PowerPC CPUs.
However, there was hardly any OS available in the wild that really
used such small page sizes (Linux uses 4096 on PPC), so there is
no known recent use case for this separate build anymore. It's
rather cumbersome to maintain a separate set of config switches for
this, and it's wasting compile and test time of all the developers
who have to build all QEMU targets to verify that their changes did
not break anything.

Except for the small CPU page sizes, qemu-system-ppc can be used as
a full replacement for qemu-system-ppcemb since it contains all the
embedded 4xx PPC boards and CPUs, too. Thus let's start the deprecation
process for qemu-system-ppcemb to see whether somebody still needs
the small page sizes or whether we could finally remove this unloved
separate build.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2018-01-27 17:25:27 +11:00

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/*
* QEMU PowerPC 405 evaluation boards 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 "qapi/error.h"
#include "qemu-common.h"
#include "cpu.h"
#include "hw/hw.h"
#include "hw/ppc/ppc.h"
#include "ppc405.h"
#include "hw/timer/m48t59.h"
#include "hw/block/flash.h"
#include "sysemu/sysemu.h"
#include "sysemu/qtest.h"
#include "sysemu/block-backend.h"
#include "hw/boards.h"
#include "qemu/log.h"
#include "qemu/error-report.h"
#include "hw/loader.h"
#include "sysemu/blockdev.h"
#include "exec/address-spaces.h"
#define BIOS_FILENAME "ppc405_rom.bin"
#define BIOS_SIZE (2048 * 1024)
#define KERNEL_LOAD_ADDR 0x00000000
#define INITRD_LOAD_ADDR 0x01800000
#define USE_FLASH_BIOS
//#define DEBUG_BOARD_INIT
/*****************************************************************************/
/* PPC405EP reference board (IBM) */
/* Standalone board with:
* - PowerPC 405EP CPU
* - SDRAM (0x00000000)
* - Flash (0xFFF80000)
* - SRAM (0xFFF00000)
* - NVRAM (0xF0000000)
* - FPGA (0xF0300000)
*/
typedef struct ref405ep_fpga_t ref405ep_fpga_t;
struct ref405ep_fpga_t {
uint8_t reg0;
uint8_t reg1;
};
static uint32_t ref405ep_fpga_readb (void *opaque, hwaddr addr)
{
ref405ep_fpga_t *fpga;
uint32_t ret;
fpga = opaque;
switch (addr) {
case 0x0:
ret = fpga->reg0;
break;
case 0x1:
ret = fpga->reg1;
break;
default:
ret = 0;
break;
}
return ret;
}
static void ref405ep_fpga_writeb (void *opaque,
hwaddr addr, uint32_t value)
{
ref405ep_fpga_t *fpga;
fpga = opaque;
switch (addr) {
case 0x0:
/* Read only */
break;
case 0x1:
fpga->reg1 = value;
break;
default:
break;
}
}
static uint32_t ref405ep_fpga_readw (void *opaque, hwaddr addr)
{
uint32_t ret;
ret = ref405ep_fpga_readb(opaque, addr) << 8;
ret |= ref405ep_fpga_readb(opaque, addr + 1);
return ret;
}
static void ref405ep_fpga_writew (void *opaque,
hwaddr addr, uint32_t value)
{
ref405ep_fpga_writeb(opaque, addr, (value >> 8) & 0xFF);
ref405ep_fpga_writeb(opaque, addr + 1, value & 0xFF);
}
static uint32_t ref405ep_fpga_readl (void *opaque, hwaddr addr)
{
uint32_t ret;
ret = ref405ep_fpga_readb(opaque, addr) << 24;
ret |= ref405ep_fpga_readb(opaque, addr + 1) << 16;
ret |= ref405ep_fpga_readb(opaque, addr + 2) << 8;
ret |= ref405ep_fpga_readb(opaque, addr + 3);
return ret;
}
static void ref405ep_fpga_writel (void *opaque,
hwaddr addr, uint32_t value)
{
ref405ep_fpga_writeb(opaque, addr, (value >> 24) & 0xFF);
ref405ep_fpga_writeb(opaque, addr + 1, (value >> 16) & 0xFF);
ref405ep_fpga_writeb(opaque, addr + 2, (value >> 8) & 0xFF);
ref405ep_fpga_writeb(opaque, addr + 3, value & 0xFF);
}
static const MemoryRegionOps ref405ep_fpga_ops = {
.old_mmio = {
.read = {
ref405ep_fpga_readb, ref405ep_fpga_readw, ref405ep_fpga_readl,
},
.write = {
ref405ep_fpga_writeb, ref405ep_fpga_writew, ref405ep_fpga_writel,
},
},
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void ref405ep_fpga_reset (void *opaque)
{
ref405ep_fpga_t *fpga;
fpga = opaque;
fpga->reg0 = 0x00;
fpga->reg1 = 0x0F;
}
static void ref405ep_fpga_init(MemoryRegion *sysmem, uint32_t base)
{
ref405ep_fpga_t *fpga;
MemoryRegion *fpga_memory = g_new(MemoryRegion, 1);
fpga = g_malloc0(sizeof(ref405ep_fpga_t));
memory_region_init_io(fpga_memory, NULL, &ref405ep_fpga_ops, fpga,
"fpga", 0x00000100);
memory_region_add_subregion(sysmem, base, fpga_memory);
qemu_register_reset(&ref405ep_fpga_reset, fpga);
}
static void ref405ep_init(MachineState *machine)
{
ram_addr_t ram_size = machine->ram_size;
const char *kernel_filename = machine->kernel_filename;
const char *kernel_cmdline = machine->kernel_cmdline;
const char *initrd_filename = machine->initrd_filename;
char *filename;
ppc4xx_bd_info_t bd;
CPUPPCState *env;
qemu_irq *pic;
MemoryRegion *bios;
MemoryRegion *sram = g_new(MemoryRegion, 1);
ram_addr_t bdloc;
MemoryRegion *ram_memories = g_malloc(2 * sizeof(*ram_memories));
hwaddr ram_bases[2], ram_sizes[2];
target_ulong sram_size;
long bios_size;
//int phy_addr = 0;
//static int phy_addr = 1;
target_ulong kernel_base, initrd_base;
long kernel_size, initrd_size;
int linux_boot;
int fl_idx, fl_sectors, len;
DriveInfo *dinfo;
MemoryRegion *sysmem = get_system_memory();
#ifdef TARGET_PPCEMB
if (!qtest_enabled()) {
warn_report("qemu-system-ppcemb is deprecated, "
"please use qemu-system-ppc instead.");
}
#endif
/* XXX: fix this */
memory_region_allocate_system_memory(&ram_memories[0], NULL, "ef405ep.ram",
0x08000000);
ram_bases[0] = 0;
ram_sizes[0] = 0x08000000;
memory_region_init(&ram_memories[1], NULL, "ef405ep.ram1", 0);
ram_bases[1] = 0x00000000;
ram_sizes[1] = 0x00000000;
ram_size = 128 * 1024 * 1024;
#ifdef DEBUG_BOARD_INIT
printf("%s: register cpu\n", __func__);
#endif
env = ppc405ep_init(sysmem, ram_memories, ram_bases, ram_sizes,
33333333, &pic, kernel_filename == NULL ? 0 : 1);
/* allocate SRAM */
sram_size = 512 * 1024;
memory_region_init_ram(sram, NULL, "ef405ep.sram", sram_size,
&error_fatal);
memory_region_add_subregion(sysmem, 0xFFF00000, sram);
/* allocate and load BIOS */
#ifdef DEBUG_BOARD_INIT
printf("%s: register BIOS\n", __func__);
#endif
fl_idx = 0;
#ifdef USE_FLASH_BIOS
dinfo = drive_get(IF_PFLASH, 0, fl_idx);
if (dinfo) {
BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
bios_size = blk_getlength(blk);
fl_sectors = (bios_size + 65535) >> 16;
#ifdef DEBUG_BOARD_INIT
printf("Register parallel flash %d size %lx"
" at addr %lx '%s' %d\n",
fl_idx, bios_size, -bios_size,
blk_name(blk), fl_sectors);
#endif
pflash_cfi02_register((uint32_t)(-bios_size),
NULL, "ef405ep.bios", bios_size,
blk, 65536, fl_sectors, 1,
2, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA,
1);
fl_idx++;
} else
#endif
{
#ifdef DEBUG_BOARD_INIT
printf("Load BIOS from file\n");
#endif
bios = g_new(MemoryRegion, 1);
memory_region_init_ram(bios, NULL, "ef405ep.bios", BIOS_SIZE,
&error_fatal);
if (bios_name == NULL)
bios_name = BIOS_FILENAME;
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
if (filename) {
bios_size = load_image(filename, memory_region_get_ram_ptr(bios));
g_free(filename);
if (bios_size < 0 || bios_size > BIOS_SIZE) {
error_report("Could not load PowerPC BIOS '%s'", bios_name);
exit(1);
}
bios_size = (bios_size + 0xfff) & ~0xfff;
memory_region_add_subregion(sysmem, (uint32_t)(-bios_size), bios);
} else if (!qtest_enabled() || kernel_filename != NULL) {
error_report("Could not load PowerPC BIOS '%s'", bios_name);
exit(1);
} else {
/* Avoid an uninitialized variable warning */
bios_size = -1;
}
memory_region_set_readonly(bios, true);
}
/* Register FPGA */
#ifdef DEBUG_BOARD_INIT
printf("%s: register FPGA\n", __func__);
#endif
ref405ep_fpga_init(sysmem, 0xF0300000);
/* Register NVRAM */
#ifdef DEBUG_BOARD_INIT
printf("%s: register NVRAM\n", __func__);
#endif
m48t59_init(NULL, 0xF0000000, 0, 8192, 1968, 8);
/* Load kernel */
linux_boot = (kernel_filename != NULL);
if (linux_boot) {
#ifdef DEBUG_BOARD_INIT
printf("%s: load kernel\n", __func__);
#endif
memset(&bd, 0, sizeof(bd));
bd.bi_memstart = 0x00000000;
bd.bi_memsize = ram_size;
bd.bi_flashstart = -bios_size;
bd.bi_flashsize = -bios_size;
bd.bi_flashoffset = 0;
bd.bi_sramstart = 0xFFF00000;
bd.bi_sramsize = sram_size;
bd.bi_bootflags = 0;
bd.bi_intfreq = 133333333;
bd.bi_busfreq = 33333333;
bd.bi_baudrate = 115200;
bd.bi_s_version[0] = 'Q';
bd.bi_s_version[1] = 'M';
bd.bi_s_version[2] = 'U';
bd.bi_s_version[3] = '\0';
bd.bi_r_version[0] = 'Q';
bd.bi_r_version[1] = 'E';
bd.bi_r_version[2] = 'M';
bd.bi_r_version[3] = 'U';
bd.bi_r_version[4] = '\0';
bd.bi_procfreq = 133333333;
bd.bi_plb_busfreq = 33333333;
bd.bi_pci_busfreq = 33333333;
bd.bi_opbfreq = 33333333;
bdloc = ppc405_set_bootinfo(env, &bd, 0x00000001);
env->gpr[3] = bdloc;
kernel_base = KERNEL_LOAD_ADDR;
/* now we can load the kernel */
kernel_size = load_image_targphys(kernel_filename, kernel_base,
ram_size - kernel_base);
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
kernel_filename);
exit(1);
}
printf("Load kernel size %ld at " TARGET_FMT_lx,
kernel_size, kernel_base);
/* load initrd */
if (initrd_filename) {
initrd_base = INITRD_LOAD_ADDR;
initrd_size = load_image_targphys(initrd_filename, initrd_base,
ram_size - initrd_base);
if (initrd_size < 0) {
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
initrd_filename);
exit(1);
}
} else {
initrd_base = 0;
initrd_size = 0;
}
env->gpr[4] = initrd_base;
env->gpr[5] = initrd_size;
if (kernel_cmdline != NULL) {
len = strlen(kernel_cmdline);
bdloc -= ((len + 255) & ~255);
cpu_physical_memory_write(bdloc, kernel_cmdline, len + 1);
env->gpr[6] = bdloc;
env->gpr[7] = bdloc + len;
} else {
env->gpr[6] = 0;
env->gpr[7] = 0;
}
env->nip = KERNEL_LOAD_ADDR;
} else {
kernel_base = 0;
kernel_size = 0;
initrd_base = 0;
initrd_size = 0;
bdloc = 0;
}
#ifdef DEBUG_BOARD_INIT
printf("bdloc " RAM_ADDR_FMT "\n", bdloc);
printf("%s: Done\n", __func__);
#endif
}
static void ref405ep_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "ref405ep";
mc->init = ref405ep_init;
}
static const TypeInfo ref405ep_type = {
.name = MACHINE_TYPE_NAME("ref405ep"),
.parent = TYPE_MACHINE,
.class_init = ref405ep_class_init,
};
/*****************************************************************************/
/* AMCC Taihu evaluation board */
/* - PowerPC 405EP processor
* - SDRAM 128 MB at 0x00000000
* - Boot flash 2 MB at 0xFFE00000
* - Application flash 32 MB at 0xFC000000
* - 2 serial ports
* - 2 ethernet PHY
* - 1 USB 1.1 device 0x50000000
* - 1 LCD display 0x50100000
* - 1 CPLD 0x50100000
* - 1 I2C EEPROM
* - 1 I2C thermal sensor
* - a set of LEDs
* - bit-bang SPI port using GPIOs
* - 1 EBC interface connector 0 0x50200000
* - 1 cardbus controller + expansion slot.
* - 1 PCI expansion slot.
*/
typedef struct taihu_cpld_t taihu_cpld_t;
struct taihu_cpld_t {
uint8_t reg0;
uint8_t reg1;
};
static uint64_t taihu_cpld_read(void *opaque, hwaddr addr, unsigned size)
{
taihu_cpld_t *cpld;
uint32_t ret;
cpld = opaque;
switch (addr) {
case 0x0:
ret = cpld->reg0;
break;
case 0x1:
ret = cpld->reg1;
break;
default:
ret = 0;
break;
}
return ret;
}
static void taihu_cpld_write(void *opaque, hwaddr addr,
uint64_t value, unsigned size)
{
taihu_cpld_t *cpld;
cpld = opaque;
switch (addr) {
case 0x0:
/* Read only */
break;
case 0x1:
cpld->reg1 = value;
break;
default:
break;
}
}
static const MemoryRegionOps taihu_cpld_ops = {
.read = taihu_cpld_read,
.write = taihu_cpld_write,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
.endianness = DEVICE_NATIVE_ENDIAN,
};
static void taihu_cpld_reset (void *opaque)
{
taihu_cpld_t *cpld;
cpld = opaque;
cpld->reg0 = 0x01;
cpld->reg1 = 0x80;
}
static void taihu_cpld_init(MemoryRegion *sysmem, uint32_t base)
{
taihu_cpld_t *cpld;
MemoryRegion *cpld_memory = g_new(MemoryRegion, 1);
cpld = g_malloc0(sizeof(taihu_cpld_t));
memory_region_init_io(cpld_memory, NULL, &taihu_cpld_ops, cpld, "cpld", 0x100);
memory_region_add_subregion(sysmem, base, cpld_memory);
qemu_register_reset(&taihu_cpld_reset, cpld);
}
static void taihu_405ep_init(MachineState *machine)
{
ram_addr_t ram_size = machine->ram_size;
const char *kernel_filename = machine->kernel_filename;
const char *initrd_filename = machine->initrd_filename;
char *filename;
qemu_irq *pic;
MemoryRegion *sysmem = get_system_memory();
MemoryRegion *bios;
MemoryRegion *ram_memories = g_malloc(2 * sizeof(*ram_memories));
MemoryRegion *ram = g_malloc0(sizeof(*ram));
hwaddr ram_bases[2], ram_sizes[2];
long bios_size;
target_ulong kernel_base, initrd_base;
long kernel_size, initrd_size;
int linux_boot;
int fl_idx, fl_sectors;
DriveInfo *dinfo;
#ifdef TARGET_PPCEMB
if (!qtest_enabled()) {
warn_report("qemu-system-ppcemb is deprecated, "
"please use qemu-system-ppc instead.");
}
#endif
/* RAM is soldered to the board so the size cannot be changed */
ram_size = 0x08000000;
memory_region_allocate_system_memory(ram, NULL, "taihu_405ep.ram",
ram_size);
ram_bases[0] = 0;
ram_sizes[0] = 0x04000000;
memory_region_init_alias(&ram_memories[0], NULL,
"taihu_405ep.ram-0", ram, ram_bases[0],
ram_sizes[0]);
ram_bases[1] = 0x04000000;
ram_sizes[1] = 0x04000000;
memory_region_init_alias(&ram_memories[1], NULL,
"taihu_405ep.ram-1", ram, ram_bases[1],
ram_sizes[1]);
#ifdef DEBUG_BOARD_INIT
printf("%s: register cpu\n", __func__);
#endif
ppc405ep_init(sysmem, ram_memories, ram_bases, ram_sizes,
33333333, &pic, kernel_filename == NULL ? 0 : 1);
/* allocate and load BIOS */
#ifdef DEBUG_BOARD_INIT
printf("%s: register BIOS\n", __func__);
#endif
fl_idx = 0;
#if defined(USE_FLASH_BIOS)
dinfo = drive_get(IF_PFLASH, 0, fl_idx);
if (dinfo) {
BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
bios_size = blk_getlength(blk);
/* XXX: should check that size is 2MB */
// bios_size = 2 * 1024 * 1024;
fl_sectors = (bios_size + 65535) >> 16;
#ifdef DEBUG_BOARD_INIT
printf("Register parallel flash %d size %lx"
" at addr %lx '%s' %d\n",
fl_idx, bios_size, -bios_size,
blk_name(blk), fl_sectors);
#endif
pflash_cfi02_register((uint32_t)(-bios_size),
NULL, "taihu_405ep.bios", bios_size,
blk, 65536, fl_sectors, 1,
4, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA,
1);
fl_idx++;
} else
#endif
{
#ifdef DEBUG_BOARD_INIT
printf("Load BIOS from file\n");
#endif
if (bios_name == NULL)
bios_name = BIOS_FILENAME;
bios = g_new(MemoryRegion, 1);
memory_region_init_ram(bios, NULL, "taihu_405ep.bios", BIOS_SIZE,
&error_fatal);
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
if (filename) {
bios_size = load_image(filename, memory_region_get_ram_ptr(bios));
g_free(filename);
if (bios_size < 0 || bios_size > BIOS_SIZE) {
error_report("Could not load PowerPC BIOS '%s'", bios_name);
exit(1);
}
bios_size = (bios_size + 0xfff) & ~0xfff;
memory_region_add_subregion(sysmem, (uint32_t)(-bios_size), bios);
} else if (!qtest_enabled()) {
error_report("Could not load PowerPC BIOS '%s'", bios_name);
exit(1);
}
memory_region_set_readonly(bios, true);
}
/* Register Linux flash */
dinfo = drive_get(IF_PFLASH, 0, fl_idx);
if (dinfo) {
BlockBackend *blk = blk_by_legacy_dinfo(dinfo);
bios_size = blk_getlength(blk);
/* XXX: should check that size is 32MB */
bios_size = 32 * 1024 * 1024;
fl_sectors = (bios_size + 65535) >> 16;
#ifdef DEBUG_BOARD_INIT
printf("Register parallel flash %d size %lx"
" at addr " TARGET_FMT_lx " '%s'\n",
fl_idx, bios_size, (target_ulong)0xfc000000,
blk_name(blk));
#endif
pflash_cfi02_register(0xfc000000, NULL, "taihu_405ep.flash", bios_size,
blk, 65536, fl_sectors, 1,
4, 0x0001, 0x22DA, 0x0000, 0x0000, 0x555, 0x2AA,
1);
fl_idx++;
}
/* Register CLPD & LCD display */
#ifdef DEBUG_BOARD_INIT
printf("%s: register CPLD\n", __func__);
#endif
taihu_cpld_init(sysmem, 0x50100000);
/* Load kernel */
linux_boot = (kernel_filename != NULL);
if (linux_boot) {
#ifdef DEBUG_BOARD_INIT
printf("%s: load kernel\n", __func__);
#endif
kernel_base = KERNEL_LOAD_ADDR;
/* now we can load the kernel */
kernel_size = load_image_targphys(kernel_filename, kernel_base,
ram_size - kernel_base);
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
kernel_filename);
exit(1);
}
/* load initrd */
if (initrd_filename) {
initrd_base = INITRD_LOAD_ADDR;
initrd_size = load_image_targphys(initrd_filename, initrd_base,
ram_size - initrd_base);
if (initrd_size < 0) {
fprintf(stderr,
"qemu: could not load initial ram disk '%s'\n",
initrd_filename);
exit(1);
}
} else {
initrd_base = 0;
initrd_size = 0;
}
} else {
kernel_base = 0;
kernel_size = 0;
initrd_base = 0;
initrd_size = 0;
}
#ifdef DEBUG_BOARD_INIT
printf("%s: Done\n", __func__);
#endif
}
static void taihu_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
mc->desc = "taihu";
mc->init = taihu_405ep_init;
}
static const TypeInfo taihu_type = {
.name = MACHINE_TYPE_NAME("taihu"),
.parent = TYPE_MACHINE,
.class_init = taihu_class_init,
};
static void ppc405_machine_init(void)
{
type_register_static(&ref405ep_type);
type_register_static(&taihu_type);
}
type_init(ppc405_machine_init)
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