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lib: sbi: Improve get_feature_str() implementation and usage

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We do following improvements for get_feature_str():
1. We should return "none" from get_feature_str() no features
   available instead of sbi_boot_prints() explicitly handling
   failure.
2. We don't need to return failure (just like misa_xlen())
   because we are returning "none" for no features and we are
   truncating output when space is not available.
3. Based on 1 and 2, the sbi_boot_prints() can be further
   simplified.
4. No need for two char[] in sbi_boot_prints()

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2020-05-10 11:36:14 +05:30
committed by Anup Patel
parent 28b4052849
commit 49841832b8
5 changed files with 34 additions and 56 deletions
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27
lib/sbi/sbi_init.c
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@@ -35,10 +35,8 @@
static void sbi_boot_prints(struct sbi_scratch *scratch, u32 hartid)
{
int xlen, ret;
char str[64];
int max_fstr_len = 128;
char features[128];
int xlen;
char str[128];
const struct sbi_platform *plat = sbi_platform_ptr(scratch);
#ifdef OPENSBI_VERSION_GIT
@@ -56,35 +54,26 @@ static void sbi_boot_prints(struct sbi_scratch *scratch, u32 hartid)
sbi_printf("Error %d getting MISA XLEN\n", xlen);
sbi_hart_hang();
}
misa_string(xlen, str, sizeof(str));
/* Platform details */
sbi_printf("Platform Name : %s\n", sbi_platform_name(plat));
sbi_printf("Platform HART Count : %u\n",
sbi_platform_hart_count(plat));
sbi_memset(features, 0, max_fstr_len);
ret = sbi_platform_get_features_str(plat, features, max_fstr_len);
if (!ret)
sbi_printf("Platform Features : %s\n", features);
else
sbi_printf("Platform Features : %s\n", "none");
sbi_platform_get_features_str(plat, str, sizeof(str));
sbi_printf("Platform Features : %s\n", str);
/* Boot HART details */
sbi_printf("Boot HART ID : %u\n", hartid);
misa_string(xlen, str, sizeof(str));
sbi_printf("Boot HART ISA : %s\n", str);
sbi_memset(features, 0, max_fstr_len);
ret = sbi_hart_get_features_str(hartid, features, max_fstr_len);
if (!ret)
sbi_printf("BOOT HART Features : %s\n", features);
else
sbi_printf("BOOT HART Features : %s\n", "none");
sbi_hart_get_features_str(hartid, str, sizeof(str));
sbi_printf("BOOT HART Features : %s\n", str);
/* Firmware details */
sbi_printf("Firmware Base : 0x%lx\n", scratch->fw_start);
sbi_printf("Firmware Size : %d KB\n",
(u32)(scratch->fw_size / 1024));
/* Generic details */
sbi_printf("Runtime SBI Version : %d.%d\n",
sbi_ecall_version_major(), sbi_ecall_version_minor());