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platform: thead/c910: Use HSM extension to boot secondary cores 

Remove custom vendor extension and use HSM extension
to boot secondary cores

Signed-off-by: Liu Yibin <yibin_liu@c-sky.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Liu Yibin 2020-03-27 11:31:48 +08:00 committed by Anup Patel
parent 648507a867
commit e5a7f556ce
2 changed files with 5 additions and 20 deletions
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20
platform/thead/c910/platform.c
View File

@ -106,25 +106,11 @@ static int c910_system_shutdown(u32 type)
return 0;
}
void sbi_boot_other_core(int hartid)
int c910_hart_start(u32 hartid, ulong saddr)
{
csr_write(CSR_MRVBR, FW_TEXT_START);
csr_write(CSR_MRVBR, saddr);
csr_write(CSR_MRMR, csr_read(CSR_MRMR) | (1 << hartid));
}
static int c910_vendor_ext_provider(long extid, long funcid,
unsigned long *args,
unsigned long *out_value,
struct sbi_trap_info *out_trap)
{
switch (extid) {
case SBI_EXT_VENDOR_C910_BOOT_OTHER_CORE:
sbi_boot_other_core((int)args[0]);
break;
default:
sbi_printf("Unsupported private sbi call: %ld\n", extid);
asm volatile ("ebreak");
}
return 0;
}
@ -143,7 +129,7 @@ const struct sbi_platform_operations platform_ops = {
.system_shutdown = c910_system_shutdown,
.vendor_ext_provider = c910_vendor_ext_provider,
.hart_start = c910_hart_start,
};
const struct sbi_platform platform = {

5
platform/thead/c910/platform.h
View File

@ -10,7 +10,8 @@
#define SBI_THEAD_FEATURES \
(SBI_PLATFORM_HAS_SCOUNTEREN | \
SBI_PLATFORM_HAS_MCOUNTEREN | \
SBI_PLATFORM_HAS_MFAULTS_DELEGATION)
SBI_PLATFORM_HAS_MFAULTS_DELEGATION | \
SBI_PLATFORM_HAS_HART_SECONDARY_BOOT)
#define CSR_MCOR 0x7c2
#define CSR_MHCR 0x7c1
@ -21,8 +22,6 @@
#define CSR_MRMR 0x7c6
#define CSR_MRVBR 0x7c7
#define SBI_EXT_VENDOR_C910_BOOT_OTHER_CORE 0x09000003
#define C910_PLIC_CLINT_OFFSET 0x04000000 /* 64M */
#define C910_PLIC_DELEG_OFFSET 0x001ffffc
#define C910_PLIC_DELEG_ENABLE 0x1