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sbi: Add ecall helpers

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Define sbi_ecall_console_puts() using sbi_ecall_console_putchar()
renamed as sbi_ecall_console_putc() and remove the hardcoded version
of the same funtion in the test payload code.

Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
This commit is contained in:
Damien Le Moal
2019-01-18 16:28:32 +09:00
committed by Anup Patel
parent 42283461d3
commit b5be19f9e5
2 changed files with 11 additions and 10 deletions
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10
firmware/payloads/test_main.c
View File

@@ -14,17 +14,9 @@ do { \
__asm__ __volatile__ ("wfi" ::: "memory"); \
} while (0)
static void sbi_puts(const char *str)
{
while (*str) {
SBI_ECALL_1(SBI_ECALL_CONSOLE_PUTCHAR, *str);
str++;
}
}
void test_main(unsigned long a0, unsigned long a1)
{
sbi_puts("\nTest payload running\n");
sbi_ecall_console_puts("\nTest payload running\n");
while (1)
wfi();

11
include/sbi/sbi_ecall_interface.h
View File

@@ -24,7 +24,7 @@
register unsigned long a0 asm ("a0") = (unsigned long)(__a0); \
register unsigned long a1 asm ("a1") = (unsigned long)(__a1); \
register unsigned long a2 asm ("a2") = (unsigned long)(__a2); \
register unsigned long a7 asm ("a7") = (unsigned long)(__num);\
register unsigned long a7 asm ("a7") = (unsigned long)(__num); \
asm volatile ("ecall" \
: "+r" (a0) \
: "r" (a1), "r" (a2), "r" (a7) \
@@ -36,4 +36,13 @@
#define SBI_ECALL_1(__num, __a0) SBI_ECALL(__num, __a0, 0, 0)
#define SBI_ECALL_2(__num, __a0, __a1) SBI_ECALL(__num, __a0, __a1, 0)
#define sbi_ecall_console_putc(c) \
SBI_ECALL_1(SBI_ECALL_CONSOLE_PUTCHAR, (c));
static inline void sbi_ecall_console_puts(const char *str)
{
while (str && *str)
sbi_ecall_console_putc(*str++);
}
#endif