@@ -31,6 +31,8 @@
#define VIRT_GED_MEM_ADDR (VIRT_GED_EVT_ADDR + ACPI_GED_EVT_SEL_LEN)
#define VIRT_GED_REG_ADDR (VIRT_GED_MEM_ADDR + MEMORY_HOTPLUG_IO_LEN)
+#define COMMAND_LINE_SIZE 512
+
struct LoongArchMachineState {
/*< private >*/
MachineState parent_obj;
@@ -361,6 +361,8 @@ typedef struct CPUArchState {
uint32_t mp_state;
/* Store ipistate to access from this struct */
DeviceState *ipistate;
+
+ struct loongarch_boot_info *boot_info;
#endif
} CPULoongArchState;
@@ -62,6 +62,16 @@ static const unsigned int slave_boot_code[] = {
0x4c000020, /* jirl $r0,$r1,0 */
};
+static void init_cmdline(struct loongarch_boot_info *info, void *p, void *start)
+{
+ hwaddr cmdline_addr = (hwaddr)p - (hwaddr)start;
+
+ info->a0 = 1;
+ info->a1 = cmdline_addr;
+
+ memcpy(p, info->kernel_cmdline, COMMAND_LINE_SIZE);
+}
+
static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr)
{
return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS);
@@ -121,6 +131,10 @@ static void reset_load_elf(void *opaque)
cpu_reset(CPU(cpu));
if (env->load_elf) {
+ if (cpu == LOONGARCH_CPU(first_cpu)) {
+ env->gpr[4] = env->boot_info->a0;
+ env->gpr[5] = env->boot_info->a1;
+ }
cpu_set_pc(CPU(cpu), env->elf_address);
}
}
@@ -160,8 +174,13 @@ static void loongarch_firmware_boot(LoongArchMachineState *lams,
static void init_boot_rom(struct loongarch_boot_info *info, void *p)
{
+ void *start = p;
+
memcpy(p, &slave_boot_code, sizeof(slave_boot_code));
p += sizeof(slave_boot_code);
+
+ init_cmdline(info, p, start);
+ p += COMMAND_LINE_SIZE;
}
static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info)
Add init_cmline and set boot_info->a0, a1 Signed-off-by: Song Gao <gaosong@loongson.cn> --- include/hw/loongarch/virt.h | 2 ++ target/loongarch/cpu.h | 2 ++ hw/loongarch/boot.c | 19 +++++++++++++++++++ 3 files changed, 23 insertions(+)