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https://github.com/riscv-software-src/opensbi.git
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1f235ec47f
We have now clear distinction between platform and hart features. Modify the boot print messages to print platform features in a string format. In the process, this patch moved relatively larger functions to its own file from platform.h header file. Signed-off-by: Atish Patra <atish.patra@wdc.com> Tested-by: Jonathan Balkind <jbalkind@cs.princeton.edu> Reviewed-by: Anup Patel <anup.patel@wdc.com>
105 lines
2.1 KiB
C
105 lines
2.1 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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/**
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* Get the platform features in string format
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*
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* @param plat pointer to struct sbi_platform
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* @param features_str pointer to a char array where the features string will be
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* updated
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* @param nfstr length of the features_str. The feature string will be truncated
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* if nfstr is not long enough.
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* @return the features value currently set for the given platform
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*/
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int 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 SBI_EINVAL;
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features = sbi_platform_get_features(plat);
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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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features_str[offset - 1] = '\0';
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return 0;
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}
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/**
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* Get HART index for the given HART
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*
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* @param plat pointer to struct sbi_platform
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* @param hartid HART ID
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*
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* @return 0 <= value < hart_count for valid HART otherwise -1U
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*/
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u32 sbi_platform_hart_index(const struct sbi_platform *plat,
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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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