0f82309562
This reverts commit 6f739184dd.
Fixes compiling the SMMSTORE driver.
Change-Id: I3b4d4063ded50529bea48f8d865c1689fe9e26d1
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43970
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Michael Niewöhner
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#include <console/console.h>
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#include <commonlib/region.h>
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#include <cpu/x86/smm.h>
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#include <smmstore.h>
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#include <stddef.h>
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#include <stdint.h>
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/*
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* Check that the given range is legal.
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*
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* Legal means:
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* - not pointing into SMRAM
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*
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* returns 0 on success, -1 on failure
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*/
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static int range_check(void *start, size_t size)
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{
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if (smm_points_to_smram(start, size))
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return -1;
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return 0;
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}
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/* Param is usually EBX, ret in EAX */
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uint32_t smmstore_exec(uint8_t command, void *param)
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{
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uint32_t ret = SMMSTORE_RET_FAILURE;
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switch (command) {
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case SMMSTORE_CMD_READ: {
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printk(BIOS_DEBUG, "Reading from SMM store\n");
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struct smmstore_params_read *params = param;
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if (range_check(params, sizeof(*params)) != 0)
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break;
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if (range_check(params->buf, params->bufsize) != 0)
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break;
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if (smmstore_read_region(params->buf, ¶ms->bufsize) == 0)
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ret = SMMSTORE_RET_SUCCESS;
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break;
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}
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case SMMSTORE_CMD_APPEND: {
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printk(BIOS_DEBUG, "Appending into SMM store\n");
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struct smmstore_params_append *params = param;
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if (range_check(params, sizeof(*params)) != 0)
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break;
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if (range_check(params->key, params->keysize) != 0)
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break;
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if (range_check(params->val, params->valsize) != 0)
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break;
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if (smmstore_append_data(params->key, params->keysize,
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params->val, params->valsize) == 0)
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ret = SMMSTORE_RET_SUCCESS;
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break;
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}
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case SMMSTORE_CMD_CLEAR: {
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if (smmstore_clear_region() == 0)
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ret = SMMSTORE_RET_SUCCESS;
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break;
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}
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default:
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printk(BIOS_DEBUG,
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"Unknown SMM store command: 0x%02x\n", command);
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ret = SMMSTORE_RET_UNSUPPORTED;
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break;
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}
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return ret;
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}
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