61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
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/*
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* Copyright (c) 2024 Google Inc
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/devicetree.h>
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#include <zephyr/drivers/emul.h>
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#include <zephyr/drivers/emul_bbram.h>
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#include "npcx.h"
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#define DT_DRV_COMPAT nuvoton_npcx_bbram
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struct bbram_npcx_emul_config {
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const struct device *dev;
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};
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#define GET_CONFIG(target) \
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((const struct bbram_npcx_config \
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*)(((const struct bbram_npcx_emul_config *)((target)->cfg))->dev->config))
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static int npcx_emul_backend_set_data(const struct emul *target, size_t offset, size_t count,
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const uint8_t *buffer)
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{
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const struct bbram_npcx_config *config = GET_CONFIG(target);
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if (offset + count > config->size) {
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return -ERANGE;
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}
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bytecpy(((uint8_t *)config->base_addr + offset), buffer, count);
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return 0;
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}
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static int npcx_emul_backend_get_data(const struct emul *target, size_t offset, size_t count,
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uint8_t *buffer)
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{
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const struct bbram_npcx_config *config = GET_CONFIG(target);
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if (offset + count > config->size) {
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return -ERANGE;
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}
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bytecpy(buffer, ((uint8_t *)config->base_addr + offset), count);
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return 0;
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}
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static const struct emul_bbram_backend_api npcx_emul_backend_api = {
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.set_data = npcx_emul_backend_set_data,
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.get_data = npcx_emul_backend_get_data,
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};
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#define BBRAM_EMUL_INIT(inst) \
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static struct bbram_npcx_emul_config bbram_npcx_emul_config_##inst = { \
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.dev = DEVICE_DT_INST_GET(inst), \
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}; \
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EMUL_DT_INST_DEFINE(inst, NULL, NULL, &bbram_npcx_emul_config_##inst, NULL, \
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&npcx_emul_backend_api)
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DT_INST_FOREACH_STATUS_OKAY(BBRAM_EMUL_INIT);
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