forked from Mirrors/opensbi
49841832b8
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>
91 lines
1.7 KiB
C
91 lines
1.7 KiB
C
/*
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Western Digital Corporation or its affiliates.
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*
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* Authors:
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* Atish Patra <atish.patra@wdc.com>
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*/
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#include <sbi/sbi_console.h>
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#include <sbi/sbi_platform.h>
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#include <sbi/sbi_string.h>
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static inline char *sbi_platform_feature_id2string(unsigned long feature)
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{
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char *fstr = NULL;
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if (!feature)
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return NULL;
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switch (feature) {
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case SBI_PLATFORM_HAS_TIMER_VALUE:
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fstr = "timer";
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break;
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case SBI_PLATFORM_HAS_HART_HOTPLUG:
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fstr = "hotplug";
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break;
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case SBI_PLATFORM_HAS_MFAULTS_DELEGATION:
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fstr = "mfdeleg";
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break;
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case SBI_PLATFORM_HAS_HART_SECONDARY_BOOT:
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fstr = "sec_boot";
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break;
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default:
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break;
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}
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return fstr;
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}
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void sbi_platform_get_features_str(const struct sbi_platform *plat,
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char *features_str, int nfstr)
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{
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unsigned long features, feat = 1UL;
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char *temp;
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int offset = 0;
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if (!plat || !features_str || !nfstr)
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return;
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sbi_memset(features_str, 0, nfstr);
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features = sbi_platform_get_features(plat);
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if (!features)
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goto done;
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do {
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if (features & feat) {
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temp = sbi_platform_feature_id2string(feat);
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if (temp) {
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sbi_snprintf(features_str + offset, nfstr,
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"%s,", temp);
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offset = offset + sbi_strlen(temp) + 1;
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}
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}
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feat = feat << 1;
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} while (feat <= SBI_PLATFORM_HAS_LAST_FEATURE);
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done:
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if (offset)
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features_str[offset - 1] = '\0';
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else
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sbi_strncpy(features_str, "none", nfstr);
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}
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u32 sbi_platform_hart_index(const struct sbi_platform *plat, u32 hartid)
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{
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u32 i;
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if (!plat)
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return -1U;
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if (plat->hart_index2id) {
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for (i = 0; i < plat->hart_count; i++) {
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if (plat->hart_index2id[i] == hartid)
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return i;
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}
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return -1U;
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}
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return hartid;
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}
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