Signed-off-by: Song Gao <gaosong@loongson.cn>
---
hw/loongarch/boot.c | 71 ++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 70 insertions(+), 1 deletion(-)
diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c
index 3075c276d4..faff880153 100644
--- a/hw/loongarch/boot.c
+++ b/hw/loongarch/boot.c
@@ -14,6 +14,54 @@
#include "qemu/error-report.h"
#include "sysemu/reset.h"
+static unsigned int slave_boot_code[] = {
+ /* Configure reset ebase. */
+ 0x0400302c, /* csrwr $r12,0xc */
+
+ /* Disable interrupt. */
+ 0x0380100c, /* ori $r12,$r0,0x4 */
+ 0x04000180, /* csrxchg $r0,$r12,0x0 */
+
+ /* Clear mailbox. */
+ 0x1400002d, /* lu12i.w $r13,1(0x1) */
+ 0x038081ad, /* ori $r13,$r13,0x20 */
+ 0x06481da0, /* iocsrwr.d $r0,$r13 */
+
+ /* Enable IPI interrupt. */
+ 0x1400002c, /* lu12i.w $r12,1(0x1) */
+ 0x0400118c, /* csrxchg $r12,$r12,0x4 */
+ 0x02fffc0c, /* addi.d $r12,$r0,-1(0xfff) */
+ 0x1400002d, /* lu12i.w $r13,1(0x1) */
+ 0x038011ad, /* ori $r13,$r13,0x4 */
+ 0x064819ac, /* iocsrwr.w $r12,$r13 */
+ 0x1400002d, /* lu12i.w $r13,1(0x1) */
+ 0x038081ad, /* ori $r13,$r13,0x20 */
+
+ /* Wait for wakeup <.L11>: */
+ 0x06488000, /* idle 0x0 */
+ 0x03400000, /* andi $r0,$r0,0x0 */
+ 0x064809ac, /* iocsrrd.w $r12,$r13 */
+ 0x43fff59f, /* beqz $r12,-12(0x7ffff4) # 48 <.L11> */
+
+ /* Read and clear IPI interrupt. */
+ 0x1400002d, /* lu12i.w $r13,1(0x1) */
+ 0x064809ac, /* iocsrrd.w $r12,$r13 */
+ 0x1400002d, /* lu12i.w $r13,1(0x1) */
+ 0x038031ad, /* ori $r13,$r13,0xc */
+ 0x064819ac, /* iocsrwr.w $r12,$r13 */
+
+ /* Disable IPI interrupt. */
+ 0x1400002c, /* lu12i.w $r12,1(0x1) */
+ 0x04001180, /* csrxchg $r0,$r12,0x4 */
+
+ /* Read mail buf and jump to specified entry */
+ 0x1400002d, /* lu12i.w $r13,1(0x1) */
+ 0x038081ad, /* ori $r13,$r13,0x20 */
+ 0x06480dac, /* iocsrrd.d $r12,$r13 */
+ 0x00150181, /* move $r1,$r12 */
+ 0x4c000020, /* jirl $r0,$r1,0 */
+};
+
static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr)
{
return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS);
@@ -110,11 +158,19 @@ static void loongarch_firmware_boot(LoongArchMachineState *lams,
fw_cfg_add_kernel_info(info, lams->fw_cfg);
}
+static void init_boot_rom(struct loongarch_boot_info *info, void *p)
+{
+ memcpy(p, &slave_boot_code, sizeof(slave_boot_code));
+ p += sizeof(slave_boot_code);
+}
+
static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info)
{
+ static void *p;
int64_t kernel_addr = 0;
LoongArchCPU *lacpu;
CPUState *cs;
+ void *bp;
if (info->kernel_filename) {
kernel_addr = load_kernel_info(info);
@@ -123,11 +179,24 @@ static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info)
exit(1);
}
+ /* Load 'boot_rom' at [0 - 1MiB] */
+ p = g_malloc0(1 * MiB);
+ bp = p;
+ init_boot_rom(info, p);
+ rom_add_blob_fixed("boot_rom", bp, 1 * MiB, 0);
+
CPU_FOREACH(cs) {
lacpu = LOONGARCH_CPU(cs);
lacpu->env.load_elf = true;
- lacpu->env.elf_address = kernel_addr;
+ if (cs == first_cpu) {
+ lacpu->env.elf_address = kernel_addr;
+ } else {
+ lacpu->env.elf_address = 0;
+ }
+ lacpu->env.boot_info = info;
}
+
+ g_free(bp);
}
void loongarch_load_kernel(MachineState *ms, struct loongarch_boot_info *info)
--
2.25.1Hi,
On 27/12/23 09:08, Song Gao wrote:
> Signed-off-by: Song Gao <gaosong@loongson.cn>
> ---
> hw/loongarch/boot.c | 71 ++++++++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 70 insertions(+), 1 deletion(-)
>
> diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c
> index 3075c276d4..faff880153 100644
> --- a/hw/loongarch/boot.c
> +++ b/hw/loongarch/boot.c
> @@ -14,6 +14,54 @@
> #include "qemu/error-report.h"
> #include "sysemu/reset.h"
>
> +static unsigned int slave_boot_code[] = {
'const'
> + /* Configure reset ebase. */
> + 0x0400302c, /* csrwr $r12,0xc */
> +
> + /* Disable interrupt. */
> + 0x0380100c, /* ori $r12,$r0,0x4 */
> + 0x04000180, /* csrxchg $r0,$r12,0x0 */
> +
> + /* Clear mailbox. */
> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
> + 0x038081ad, /* ori $r13,$r13,0x20 */
> + 0x06481da0, /* iocsrwr.d $r0,$r13 */
> +
> + /* Enable IPI interrupt. */
> + 0x1400002c, /* lu12i.w $r12,1(0x1) */
> + 0x0400118c, /* csrxchg $r12,$r12,0x4 */
> + 0x02fffc0c, /* addi.d $r12,$r0,-1(0xfff) */
> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
> + 0x038011ad, /* ori $r13,$r13,0x4 */
> + 0x064819ac, /* iocsrwr.w $r12,$r13 */
> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
> + 0x038081ad, /* ori $r13,$r13,0x20 */
> +
> + /* Wait for wakeup <.L11>: */
> + 0x06488000, /* idle 0x0 */
> + 0x03400000, /* andi $r0,$r0,0x0 */
> + 0x064809ac, /* iocsrrd.w $r12,$r13 */
> + 0x43fff59f, /* beqz $r12,-12(0x7ffff4) # 48 <.L11> */
> +
> + /* Read and clear IPI interrupt. */
> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
> + 0x064809ac, /* iocsrrd.w $r12,$r13 */
> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
> + 0x038031ad, /* ori $r13,$r13,0xc */
> + 0x064819ac, /* iocsrwr.w $r12,$r13 */
> +
> + /* Disable IPI interrupt. */
> + 0x1400002c, /* lu12i.w $r12,1(0x1) */
> + 0x04001180, /* csrxchg $r0,$r12,0x4 */
> +
> + /* Read mail buf and jump to specified entry */
> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
> + 0x038081ad, /* ori $r13,$r13,0x20 */
> + 0x06480dac, /* iocsrrd.d $r12,$r13 */
> + 0x00150181, /* move $r1,$r12 */
> + 0x4c000020, /* jirl $r0,$r1,0 */
> +};
> +
> static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr)
> {
> return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS);
> @@ -110,11 +158,19 @@ static void loongarch_firmware_boot(LoongArchMachineState *lams,
> fw_cfg_add_kernel_info(info, lams->fw_cfg);
> }
>
> +static void init_boot_rom(struct loongarch_boot_info *info, void *p)
> +{
> + memcpy(p, &slave_boot_code, sizeof(slave_boot_code));
> + p += sizeof(slave_boot_code);
> +}
> +
> static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info)
> {
> + static void *p;
Why 'static'?
> int64_t kernel_addr = 0;
> LoongArchCPU *lacpu;
> CPUState *cs;
> + void *bp;
>
> if (info->kernel_filename) {
> kernel_addr = load_kernel_info(info);
> @@ -123,11 +179,24 @@ static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info)
> exit(1);
> }
>
> + /* Load 'boot_rom' at [0 - 1MiB] */
> + p = g_malloc0(1 * MiB);
> + bp = p;
> + init_boot_rom(info, p);
> + rom_add_blob_fixed("boot_rom", bp, 1 * MiB, 0);
> +
> CPU_FOREACH(cs) {
> lacpu = LOONGARCH_CPU(cs);
> lacpu->env.load_elf = true;
> - lacpu->env.elf_address = kernel_addr;
> + if (cs == first_cpu) {
> + lacpu->env.elf_address = kernel_addr;
> + } else {
> + lacpu->env.elf_address = 0;
> + }
> + lacpu->env.boot_info = info;
> }
> +
> + g_free(bp);
(besides, IIUC 'p' now points to released memory).
> }
>
> void loongarch_load_kernel(MachineState *ms, struct loongarch_boot_info *info)
在 2023/12/27 下午4:52, Philippe Mathieu-Daudé 写道:
> Hi,
>
> On 27/12/23 09:08, Song Gao wrote:
>> Signed-off-by: Song Gao <gaosong@loongson.cn>
>> ---
>> hw/loongarch/boot.c | 71 ++++++++++++++++++++++++++++++++++++++++++++-
>> 1 file changed, 70 insertions(+), 1 deletion(-)
>>
>> diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c
>> index 3075c276d4..faff880153 100644
>> --- a/hw/loongarch/boot.c
>> +++ b/hw/loongarch/boot.c
>> @@ -14,6 +14,54 @@
>> #include "qemu/error-report.h"
>> #include "sysemu/reset.h"
>> +static unsigned int slave_boot_code[] = {
>
> 'const'
>
Got it.
>> + /* Configure reset ebase. */
>> + 0x0400302c, /* csrwr $r12,0xc */
>> +
>> + /* Disable interrupt. */
>> + 0x0380100c, /* ori $r12,$r0,0x4 */
>> + 0x04000180, /* csrxchg $r0,$r12,0x0 */
>> +
>> + /* Clear mailbox. */
>> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
>> + 0x038081ad, /* ori $r13,$r13,0x20 */
>> + 0x06481da0, /* iocsrwr.d $r0,$r13 */
>> +
>> + /* Enable IPI interrupt. */
>> + 0x1400002c, /* lu12i.w $r12,1(0x1) */
>> + 0x0400118c, /* csrxchg $r12,$r12,0x4 */
>> + 0x02fffc0c, /* addi.d $r12,$r0,-1(0xfff) */
>> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
>> + 0x038011ad, /* ori $r13,$r13,0x4 */
>> + 0x064819ac, /* iocsrwr.w $r12,$r13 */
>> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
>> + 0x038081ad, /* ori $r13,$r13,0x20 */
>> +
>> + /* Wait for wakeup <.L11>: */
>> + 0x06488000, /* idle 0x0 */
>> + 0x03400000, /* andi $r0,$r0,0x0 */
>> + 0x064809ac, /* iocsrrd.w $r12,$r13 */
>> + 0x43fff59f, /* beqz $r12,-12(0x7ffff4) # 48 <.L11> */
>> +
>> + /* Read and clear IPI interrupt. */
>> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
>> + 0x064809ac, /* iocsrrd.w $r12,$r13 */
>> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
>> + 0x038031ad, /* ori $r13,$r13,0xc */
>> + 0x064819ac, /* iocsrwr.w $r12,$r13 */
>> +
>> + /* Disable IPI interrupt. */
>> + 0x1400002c, /* lu12i.w $r12,1(0x1) */
>> + 0x04001180, /* csrxchg $r0,$r12,0x4 */
>> +
>> + /* Read mail buf and jump to specified entry */
>> + 0x1400002d, /* lu12i.w $r13,1(0x1) */
>> + 0x038081ad, /* ori $r13,$r13,0x20 */
>> + 0x06480dac, /* iocsrrd.d $r12,$r13 */
>> + 0x00150181, /* move $r1,$r12 */
>> + 0x4c000020, /* jirl $r0,$r1,0 */
>> +};
>> +
>> static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t
>> addr)
>> {
>> return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS);
>> @@ -110,11 +158,19 @@ static void
>> loongarch_firmware_boot(LoongArchMachineState *lams,
>> fw_cfg_add_kernel_info(info, lams->fw_cfg);
>> }
>> +static void init_boot_rom(struct loongarch_boot_info *info, void *p)
>> +{
>> + memcpy(p, &slave_boot_code, sizeof(slave_boot_code));
>> + p += sizeof(slave_boot_code);
>> +}
>> +
>> static void loongarch_direct_kernel_boot(struct loongarch_boot_info
>> *info)
>> {
>> + static void *p;
>
> Why 'static'?
>
I will drop it.
>> int64_t kernel_addr = 0;
>> LoongArchCPU *lacpu;
>> CPUState *cs;
>> + void *bp;
>> if (info->kernel_filename) {
>> kernel_addr = load_kernel_info(info);
>> @@ -123,11 +179,24 @@ static void loongarch_direct_kernel_boot(struct
>> loongarch_boot_info *info)
>> exit(1);
>> }
>> + /* Load 'boot_rom' at [0 - 1MiB] */
>> + p = g_malloc0(1 * MiB);
>> + bp = p;
>> + init_boot_rom(info, p);
>> + rom_add_blob_fixed("boot_rom", bp, 1 * MiB, 0);
>> +
>> CPU_FOREACH(cs) {
>> lacpu = LOONGARCH_CPU(cs);
>> lacpu->env.load_elf = true;
>> - lacpu->env.elf_address = kernel_addr;
>> + if (cs == first_cpu) {
>> + lacpu->env.elf_address = kernel_addr;
>> + } else {
>> + lacpu->env.elf_address = 0;
>> + }
>> + lacpu->env.boot_info = info;
>> }
>> +
>> + g_free(bp);
>
> (besides, IIUC 'p' now points to released memory).
>
Yes.
Thanks.
Song Gao
>> }
>> void loongarch_load_kernel(MachineState *ms, struct
>> loongarch_boot_info *info)
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