Unverified Commit 183787c6 authored by Vincent Chen's avatar Vincent Chen Committed by Palmer Dabbelt
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riscv: Add 3 SBI wrapper functions to get cpu manufacturer information 



Add 3 wrapper functions to get vendor id, architecture id and implement id
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Signed-off-by: default avatarVincent Chen <vincent.chen@sifive.com>
Reviewed-by: default avatarAnup Patel <anup@brainfault.org>
Signed-off-by: default avatarPalmer Dabbelt <palmerdabbelt@google.com>
parent 7d0bc44b

arch/riscv/include/asm/sbi.h

+3 −0
Original line number Diff line number Diff line
@@ -97,6 +97,9 @@ struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0, 


void sbi_console_putchar(int ch);

int sbi_console_getchar(void);

long sbi_get_mvendorid(void);

long sbi_get_marchid(void);

long sbi_get_mimpid(void);

void sbi_set_timer(uint64_t stime_value);

void sbi_shutdown(void);

void sbi_clear_ipi(void);

arch/riscv/kernel/sbi.c

+15 −0
Original line number Diff line number Diff line
@@ -547,6 +547,21 @@ static inline long sbi_get_firmware_version(void) 
	return __sbi_base_ecall(SBI_EXT_BASE_GET_IMP_VERSION);

}



long sbi_get_mvendorid(void)

{

	return __sbi_base_ecall(SBI_EXT_BASE_GET_MVENDORID);

}



long sbi_get_marchid(void)

{

	return __sbi_base_ecall(SBI_EXT_BASE_GET_MARCHID);

}



long sbi_get_mimpid(void)

{

	return __sbi_base_ecall(SBI_EXT_BASE_GET_MIMPID);

}



static void sbi_send_cpumask_ipi(const struct cpumask *target)

{

	struct cpumask hartid_mask;