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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>
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648507a867
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2 changed files with 5 additions and 20 deletions
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@ -106,25 +106,11 @@ static int c910_system_shutdown(u32 type)
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return 0;
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}
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void sbi_boot_other_core(int hartid)
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int c910_hart_start(u32 hartid, ulong saddr)
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{
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csr_write(CSR_MRVBR, FW_TEXT_START);
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csr_write(CSR_MRVBR, saddr);
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csr_write(CSR_MRMR, csr_read(CSR_MRMR) | (1 << hartid));
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}
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static int c910_vendor_ext_provider(long extid, long funcid,
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unsigned long *args,
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unsigned long *out_value,
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struct sbi_trap_info *out_trap)
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{
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switch (extid) {
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case SBI_EXT_VENDOR_C910_BOOT_OTHER_CORE:
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sbi_boot_other_core((int)args[0]);
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break;
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default:
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sbi_printf("Unsupported private sbi call: %ld\n", extid);
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asm volatile ("ebreak");
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}
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return 0;
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}
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@ -143,7 +129,7 @@ const struct sbi_platform_operations platform_ops = {
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.system_shutdown = c910_system_shutdown,
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.vendor_ext_provider = c910_vendor_ext_provider,
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.hart_start = c910_hart_start,
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};
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const struct sbi_platform platform = {
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@ -10,7 +10,8 @@
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#define SBI_THEAD_FEATURES \
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(SBI_PLATFORM_HAS_SCOUNTEREN | \
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SBI_PLATFORM_HAS_MCOUNTEREN | \
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SBI_PLATFORM_HAS_MFAULTS_DELEGATION)
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SBI_PLATFORM_HAS_MFAULTS_DELEGATION | \
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SBI_PLATFORM_HAS_HART_SECONDARY_BOOT)
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#define CSR_MCOR 0x7c2
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#define CSR_MHCR 0x7c1
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@ -21,8 +22,6 @@
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#define CSR_MRMR 0x7c6
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#define CSR_MRVBR 0x7c7
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#define SBI_EXT_VENDOR_C910_BOOT_OTHER_CORE 0x09000003
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#define C910_PLIC_CLINT_OFFSET 0x04000000 /* 64M */
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#define C910_PLIC_DELEG_OFFSET 0x001ffffc
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#define C910_PLIC_DELEG_ENABLE 0x1
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