qemu-e2k/hw/sparc/leon3.c
Markus Armbruster c165473269 hw: Clean up bogus default boot order
We set default boot order "cad" in every single machine definition
except "pseries" and "moxiesim", even though very few boards actually
care for boot order, and "cad" makes sense for even fewer.

Machines that care:

* pc and its variants

  Accept up to three letters 'a', 'b' (undocumented alias for 'a'),
  'c', 'd' and 'n'.  Reject all others (fatal with -boot).

* nseries (n800, n810)

  Check whether order starts with 'n'.  Silently ignored otherwise.

* prep, g3beige, mac99

  Extract the first character the machine understands (subset of
  'a'..'f').  Silently ignored otherwise.

* spapr

  Accept an arbitrary string (vl.c restricts it to contain only
  'a'..'p', no duplicates).

* sun4[mdc]

  Use the first character.  Silently ignored otherwise.

Strip characters these machines ignore from their default boot order.

For all other machines, remove the unused default boot order
alltogether.

Note that my rename of QEMUMachine member boot_order to
default_boot_order and QEMUMachineInitArgs member boot_device to
boot_order has a welcome side effect: it makes every use of boot
orders visible in this patch, for easy review.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-08-28 10:16:47 +03:00

227 lines
6.7 KiB
C

/*
* QEMU Leon3 System Emulator
*
* Copyright (c) 2010-2011 AdaCore
*
* 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 "hw/hw.h"
#include "qemu/timer.h"
#include "hw/ptimer.h"
#include "sysemu/char.h"
#include "sysemu/sysemu.h"
#include "hw/boards.h"
#include "hw/loader.h"
#include "elf.h"
#include "trace.h"
#include "exec/address-spaces.h"
#include "hw/sparc/grlib.h"
/* Default system clock. */
#define CPU_CLK (40 * 1000 * 1000)
#define PROM_FILENAME "u-boot.bin"
#define MAX_PILS 16
typedef struct ResetData {
SPARCCPU *cpu;
uint32_t entry; /* save kernel entry in case of reset */
} ResetData;
static void main_cpu_reset(void *opaque)
{
ResetData *s = (ResetData *)opaque;
CPUState *cpu = CPU(s->cpu);
CPUSPARCState *env = &s->cpu->env;
cpu_reset(cpu);
cpu->halted = 0;
env->pc = s->entry;
env->npc = s->entry + 4;
}
void leon3_irq_ack(void *irq_manager, int intno)
{
grlib_irqmp_ack((DeviceState *)irq_manager, intno);
}
static void leon3_set_pil_in(void *opaque, uint32_t pil_in)
{
CPUSPARCState *env = (CPUSPARCState *)opaque;
CPUState *cs;
assert(env != NULL);
env->pil_in = pil_in;
if (env->pil_in && (env->interrupt_index == 0 ||
(env->interrupt_index & ~15) == TT_EXTINT)) {
unsigned int i;
for (i = 15; i > 0; i--) {
if (env->pil_in & (1 << i)) {
int old_interrupt = env->interrupt_index;
env->interrupt_index = TT_EXTINT | i;
if (old_interrupt != env->interrupt_index) {
cs = CPU(sparc_env_get_cpu(env));
trace_leon3_set_irq(i);
cpu_interrupt(cs, CPU_INTERRUPT_HARD);
}
break;
}
}
} else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) {
cs = CPU(sparc_env_get_cpu(env));
trace_leon3_reset_irq(env->interrupt_index & 15);
env->interrupt_index = 0;
cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
}
}
static void leon3_generic_hw_init(QEMUMachineInitArgs *args)
{
ram_addr_t ram_size = args->ram_size;
const char *cpu_model = args->cpu_model;
const char *kernel_filename = args->kernel_filename;
SPARCCPU *cpu;
CPUSPARCState *env;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
MemoryRegion *prom = g_new(MemoryRegion, 1);
int ret;
char *filename;
qemu_irq *cpu_irqs = NULL;
int bios_size;
int prom_size;
ResetData *reset_info;
/* Init CPU */
if (!cpu_model) {
cpu_model = "LEON3";
}
cpu = cpu_sparc_init(cpu_model);
if (cpu == NULL) {
fprintf(stderr, "qemu: Unable to find Sparc CPU definition\n");
exit(1);
}
env = &cpu->env;
cpu_sparc_set_id(env, 0);
/* Reset data */
reset_info = g_malloc0(sizeof(ResetData));
reset_info->cpu = cpu;
qemu_register_reset(main_cpu_reset, reset_info);
/* Allocate IRQ manager */
grlib_irqmp_create(0x80000200, env, &cpu_irqs, MAX_PILS, &leon3_set_pil_in);
env->qemu_irq_ack = leon3_irq_manager;
/* Allocate RAM */
if ((uint64_t)ram_size > (1UL << 30)) {
fprintf(stderr,
"qemu: Too much memory for this machine: %d, maximum 1G\n",
(unsigned int)(ram_size / (1024 * 1024)));
exit(1);
}
memory_region_init_ram(ram, NULL, "leon3.ram", ram_size);
vmstate_register_ram_global(ram);
memory_region_add_subregion(address_space_mem, 0x40000000, ram);
/* Allocate BIOS */
prom_size = 8 * 1024 * 1024; /* 8Mb */
memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size);
vmstate_register_ram_global(prom);
memory_region_set_readonly(prom, true);
memory_region_add_subregion(address_space_mem, 0x00000000, prom);
/* Load boot prom */
if (bios_name == NULL) {
bios_name = PROM_FILENAME;
}
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
bios_size = get_image_size(filename);
if (bios_size > prom_size) {
fprintf(stderr, "qemu: could not load prom '%s': file too big\n",
filename);
exit(1);
}
if (bios_size > 0) {
ret = load_image_targphys(filename, 0x00000000, bios_size);
if (ret < 0 || ret > prom_size) {
fprintf(stderr, "qemu: could not load prom '%s'\n", filename);
exit(1);
}
} else if (kernel_filename == NULL) {
fprintf(stderr, "Can't read bios image %s\n", filename);
exit(1);
}
/* Can directly load an application. */
if (kernel_filename != NULL) {
long kernel_size;
uint64_t entry;
kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL,
1 /* big endian */, ELF_MACHINE, 0);
if (kernel_size < 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
kernel_filename);
exit(1);
}
if (bios_size <= 0) {
/* If there is no bios/monitor, start the application. */
env->pc = entry;
env->npc = entry + 4;
reset_info->entry = entry;
}
}
/* Allocate timers */
grlib_gptimer_create(0x80000300, 2, CPU_CLK, cpu_irqs, 6);
/* Allocate uart */
if (serial_hds[0]) {
grlib_apbuart_create(0x80000100, serial_hds[0], cpu_irqs[3]);
}
}
static QEMUMachine leon3_generic_machine = {
.name = "leon3_generic",
.desc = "Leon-3 generic",
.init = leon3_generic_hw_init,
};
static void leon3_machine_init(void)
{
qemu_register_machine(&leon3_generic_machine);
}
machine_init(leon3_machine_init);