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qemu-e2k/hw/lm32_boards.c
Avik Sil e4ada29e90 Make default boot order machine specific 
This patch makes default boot order machine specific instead of
set globally. The default boot order can be set per machine in
QEMUMachine boot_order. This also allows a machine to receive a
NULL boot order when -boot isn't used and take an appropriate action
accordingly. This helps machine boots from the devices as set in
guest's non-volatile memory location in case no boot order is
provided by the user.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avik Sil <aviksil@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-01-15 18:26:18 -06:00

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/*
* QEMU models for LatticeMico32 uclinux and evr32 boards.
*
* Copyright (c) 2010 Michael Walle <michael@walle.cc>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "sysbus.h"
#include "hw.h"
#include "flash.h"
#include "devices.h"
#include "boards.h"
#include "loader.h"
#include "sysemu/blockdev.h"
#include "elf.h"
#include "lm32_hwsetup.h"
#include "lm32.h"
#include "exec/address-spaces.h"
typedef struct {
LM32CPU *cpu;
hwaddr bootstrap_pc;
hwaddr flash_base;
hwaddr hwsetup_base;
hwaddr initrd_base;
size_t initrd_size;
hwaddr cmdline_base;
} ResetInfo;
static void cpu_irq_handler(void *opaque, int irq, int level)
{
CPULM32State *env = opaque;
if (level) {
cpu_interrupt(env, CPU_INTERRUPT_HARD);
} else {
cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
}
}
static void main_cpu_reset(void *opaque)
{
ResetInfo *reset_info = opaque;
CPULM32State *env = &reset_info->cpu->env;
cpu_reset(CPU(reset_info->cpu));
/* init defaults */
env->pc = (uint32_t)reset_info->bootstrap_pc;
env->regs[R_R1] = (uint32_t)reset_info->hwsetup_base;
env->regs[R_R2] = (uint32_t)reset_info->cmdline_base;
env->regs[R_R3] = (uint32_t)reset_info->initrd_base;
env->regs[R_R4] = (uint32_t)(reset_info->initrd_base +
reset_info->initrd_size);
env->eba = reset_info->flash_base;
env->deba = reset_info->flash_base;
}
static void lm32_evr_init(QEMUMachineInitArgs *args)
{
const char *cpu_model = args->cpu_model;
const char *kernel_filename = args->kernel_filename;
LM32CPU *cpu;
CPULM32State *env;
DriveInfo *dinfo;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
qemu_irq *cpu_irq, irq[32];
ResetInfo *reset_info;
int i;
/* memory map */
hwaddr flash_base = 0x04000000;
size_t flash_sector_size = 256 * 1024;
size_t flash_size = 32 * 1024 * 1024;
hwaddr ram_base = 0x08000000;
size_t ram_size = 64 * 1024 * 1024;
hwaddr timer0_base = 0x80002000;
hwaddr uart0_base = 0x80006000;
hwaddr timer1_base = 0x8000a000;
int uart0_irq = 0;
int timer0_irq = 1;
int timer1_irq = 3;
reset_info = g_malloc0(sizeof(ResetInfo));
if (cpu_model == NULL) {
cpu_model = "lm32-full";
}
cpu = cpu_lm32_init(cpu_model);
env = &cpu->env;
reset_info->cpu = cpu;
reset_info->flash_base = flash_base;
memory_region_init_ram(phys_ram, "lm32_evr.sdram", ram_size);
vmstate_register_ram_global(phys_ram);
memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
dinfo = drive_get(IF_PFLASH, 0, 0);
/* Spansion S29NS128P */
pflash_cfi02_register(flash_base, NULL, "lm32_evr.flash", flash_size,
dinfo ? dinfo->bdrv : NULL, flash_sector_size,
flash_size / flash_sector_size, 1, 2,
0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);
/* create irq lines */
cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1);
env->pic_state = lm32_pic_init(*cpu_irq);
for (i = 0; i < 32; i++) {
irq[i] = qdev_get_gpio_in(env->pic_state, i);
}
sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);
sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);
sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);
/* make sure juart isn't the first chardev */
env->juart_state = lm32_juart_init();
reset_info->bootstrap_pc = flash_base;
if (kernel_filename) {
uint64_t entry;
int kernel_size;
kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
1, ELF_MACHINE, 0);
reset_info->bootstrap_pc = entry;
if (kernel_size < 0) {
kernel_size = load_image_targphys(kernel_filename, ram_base,
ram_size);
reset_info->bootstrap_pc = ram_base;
}
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
kernel_filename);
exit(1);
}
}
qemu_register_reset(main_cpu_reset, reset_info);
}
static void lm32_uclinux_init(QEMUMachineInitArgs *args)
{
const char *cpu_model = args->cpu_model;
const char *kernel_filename = args->kernel_filename;
const char *kernel_cmdline = args->kernel_cmdline;
const char *initrd_filename = args->initrd_filename;
LM32CPU *cpu;
CPULM32State *env;
DriveInfo *dinfo;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
qemu_irq *cpu_irq, irq[32];
HWSetup *hw;
ResetInfo *reset_info;
int i;
/* memory map */
hwaddr flash_base = 0x04000000;
size_t flash_sector_size = 256 * 1024;
size_t flash_size = 32 * 1024 * 1024;
hwaddr ram_base = 0x08000000;
size_t ram_size = 64 * 1024 * 1024;
hwaddr uart0_base = 0x80000000;
hwaddr timer0_base = 0x80002000;
hwaddr timer1_base = 0x80010000;
hwaddr timer2_base = 0x80012000;
int uart0_irq = 0;
int timer0_irq = 1;
int timer1_irq = 20;
int timer2_irq = 21;
hwaddr hwsetup_base = 0x0bffe000;
hwaddr cmdline_base = 0x0bfff000;
hwaddr initrd_base = 0x08400000;
size_t initrd_max = 0x01000000;
reset_info = g_malloc0(sizeof(ResetInfo));
if (cpu_model == NULL) {
cpu_model = "lm32-full";
}
cpu = cpu_lm32_init(cpu_model);
env = &cpu->env;
reset_info->cpu = cpu;
reset_info->flash_base = flash_base;
memory_region_init_ram(phys_ram, "lm32_uclinux.sdram", ram_size);
vmstate_register_ram_global(phys_ram);
memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
dinfo = drive_get(IF_PFLASH, 0, 0);
/* Spansion S29NS128P */
pflash_cfi02_register(flash_base, NULL, "lm32_uclinux.flash", flash_size,
dinfo ? dinfo->bdrv : NULL, flash_sector_size,
flash_size / flash_sector_size, 1, 2,
0x01, 0x7e, 0x43, 0x00, 0x555, 0x2aa, 1);
/* create irq lines */
cpu_irq = qemu_allocate_irqs(cpu_irq_handler, env, 1);
env->pic_state = lm32_pic_init(*cpu_irq);
for (i = 0; i < 32; i++) {
irq[i] = qdev_get_gpio_in(env->pic_state, i);
}
sysbus_create_simple("lm32-uart", uart0_base, irq[uart0_irq]);
sysbus_create_simple("lm32-timer", timer0_base, irq[timer0_irq]);
sysbus_create_simple("lm32-timer", timer1_base, irq[timer1_irq]);
sysbus_create_simple("lm32-timer", timer2_base, irq[timer2_irq]);
/* make sure juart isn't the first chardev */
env->juart_state = lm32_juart_init();
reset_info->bootstrap_pc = flash_base;
if (kernel_filename) {
uint64_t entry;
int kernel_size;
kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
1, ELF_MACHINE, 0);
reset_info->bootstrap_pc = entry;
if (kernel_size < 0) {
kernel_size = load_image_targphys(kernel_filename, ram_base,
ram_size);
reset_info->bootstrap_pc = ram_base;
}
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
kernel_filename);
exit(1);
}
}
/* generate a rom with the hardware description */
hw = hwsetup_init();
hwsetup_add_cpu(hw, "LM32", 75000000);
hwsetup_add_flash(hw, "flash", flash_base, flash_size);
hwsetup_add_ddr_sdram(hw, "ddr_sdram", ram_base, ram_size);
hwsetup_add_timer(hw, "timer0", timer0_base, timer0_irq);
hwsetup_add_timer(hw, "timer1_dev_only", timer1_base, timer1_irq);
hwsetup_add_timer(hw, "timer2_dev_only", timer2_base, timer2_irq);
hwsetup_add_uart(hw, "uart", uart0_base, uart0_irq);
hwsetup_add_trailer(hw);
hwsetup_create_rom(hw, hwsetup_base);
hwsetup_free(hw);
reset_info->hwsetup_base = hwsetup_base;
if (kernel_cmdline && strlen(kernel_cmdline)) {
pstrcpy_targphys("cmdline", cmdline_base, TARGET_PAGE_SIZE,
kernel_cmdline);
reset_info->cmdline_base = cmdline_base;
}
if (initrd_filename) {
size_t initrd_size;
initrd_size = load_image_targphys(initrd_filename, initrd_base,
initrd_max);
reset_info->initrd_base = initrd_base;
reset_info->initrd_size = initrd_size;
}
qemu_register_reset(main_cpu_reset, reset_info);
}
static QEMUMachine lm32_evr_machine = {
.name = "lm32-evr",
.desc = "LatticeMico32 EVR32 eval system",
.init = lm32_evr_init,
.is_default = 1,
DEFAULT_MACHINE_OPTIONS,
};
static QEMUMachine lm32_uclinux_machine = {
.name = "lm32-uclinux",
.desc = "lm32 platform for uClinux and u-boot by Theobroma Systems",
.init = lm32_uclinux_init,
.is_default = 0,
DEFAULT_MACHINE_OPTIONS,
};
static void lm32_machine_init(void)
{
qemu_register_machine(&lm32_uclinux_machine);
qemu_register_machine(&lm32_evr_machine);
}
machine_init(lm32_machine_init);
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