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lib: Introduce sbi_dprintf() API

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This patch introduces new sbi_dprintf() API for runtime debug
prints. The sbi_dprintf() will print to console for a given
HART only when SBI_SCRATCH_DEBUG_PRINTS option in enabled in
sbi_scratch for this HART.

We can now add debug prints using sbi_dprintf() at important
places in OpenSBI sources. These debug prints will only show
up when previous booting stage or compile time parameter sets
the SBI_SCRATCH_DEBUG_PRINTS option in scratch space.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Anup Patel
2019-08-08 12:10:22 +05:30
committed by Anup Patel
parent b1318e578b
commit dbff3e9f12
3 changed files with 19 additions and 0 deletions
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4
include/sbi/sbi_console.h
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@@ -31,6 +31,10 @@ int __printf(3, 4) sbi_snprintf(char *out, u32 out_sz, const char *format, ...);
int __printf(1, 2) sbi_printf(const char *format, ...);
struct sbi_scratch;
int __printf(2, 3) sbi_dprintf(struct sbi_scratch *scratch,
const char *format, ...);
int sbi_console_init(struct sbi_scratch *scratch);
#endif