mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 04:23:46 +00:00
152 lines
3.3 KiB
C
152 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2015 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <fdtdec.h>
|
|
#include <log.h>
|
|
#include <mmc.h>
|
|
#include <asm/test.h>
|
|
|
|
struct sandbox_mmc_plat {
|
|
struct mmc_config cfg;
|
|
struct mmc mmc;
|
|
};
|
|
|
|
/**
|
|
* sandbox_mmc_send_cmd() - Emulate SD commands
|
|
*
|
|
* This emulate an SD card version 2. Single-block reads result in zero data.
|
|
* Multiple-block reads return a test string.
|
|
*/
|
|
static int sandbox_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
|
|
struct mmc_data *data)
|
|
{
|
|
switch (cmd->cmdidx) {
|
|
case MMC_CMD_ALL_SEND_CID:
|
|
memset(cmd->response, '\0', sizeof(cmd->response));
|
|
break;
|
|
case SD_CMD_SEND_RELATIVE_ADDR:
|
|
cmd->response[0] = 0 << 16; /* mmc->rca */
|
|
case MMC_CMD_GO_IDLE_STATE:
|
|
break;
|
|
case SD_CMD_SEND_IF_COND:
|
|
cmd->response[0] = 0xaa;
|
|
break;
|
|
case MMC_CMD_SEND_STATUS:
|
|
cmd->response[0] = MMC_STATUS_RDY_FOR_DATA;
|
|
break;
|
|
case MMC_CMD_SELECT_CARD:
|
|
break;
|
|
case MMC_CMD_SEND_CSD:
|
|
cmd->response[0] = 0;
|
|
cmd->response[1] = 10 << 16; /* 1 << block_len */
|
|
cmd->response[2] = 0;
|
|
cmd->response[3] = 0;
|
|
break;
|
|
case SD_CMD_SWITCH_FUNC: {
|
|
if (!data)
|
|
break;
|
|
u32 *resp = (u32 *)data->dest;
|
|
resp[3] = 0;
|
|
resp[7] = cpu_to_be32(SD_HIGHSPEED_BUSY);
|
|
if ((cmd->cmdarg & 0xF) == UHS_SDR12_BUS_SPEED)
|
|
resp[4] = (cmd->cmdarg & 0xF) << 24;
|
|
break;
|
|
}
|
|
case MMC_CMD_READ_SINGLE_BLOCK:
|
|
memset(data->dest, '\0', data->blocksize);
|
|
break;
|
|
case MMC_CMD_READ_MULTIPLE_BLOCK:
|
|
strcpy(data->dest, "this is a test");
|
|
break;
|
|
case MMC_CMD_STOP_TRANSMISSION:
|
|
break;
|
|
case SD_CMD_APP_SEND_OP_COND:
|
|
cmd->response[0] = OCR_BUSY | OCR_HCS;
|
|
cmd->response[1] = 0;
|
|
cmd->response[2] = 0;
|
|
break;
|
|
case MMC_CMD_APP_CMD:
|
|
break;
|
|
case MMC_CMD_SET_BLOCKLEN:
|
|
debug("block len %d\n", cmd->cmdarg);
|
|
break;
|
|
case SD_CMD_APP_SEND_SCR: {
|
|
u32 *scr = (u32 *)data->dest;
|
|
|
|
scr[0] = cpu_to_be32(2 << 24 | 1 << 15); /* SD version 3 */
|
|
break;
|
|
}
|
|
default:
|
|
debug("%s: Unknown command %d\n", __func__, cmd->cmdidx);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_mmc_set_ios(struct udevice *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_mmc_get_cd(struct udevice *dev)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static const struct dm_mmc_ops sandbox_mmc_ops = {
|
|
.send_cmd = sandbox_mmc_send_cmd,
|
|
.set_ios = sandbox_mmc_set_ios,
|
|
.get_cd = sandbox_mmc_get_cd,
|
|
};
|
|
|
|
int sandbox_mmc_probe(struct udevice *dev)
|
|
{
|
|
struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
|
|
|
|
return mmc_init(&plat->mmc);
|
|
}
|
|
|
|
int sandbox_mmc_bind(struct udevice *dev)
|
|
{
|
|
struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
|
|
struct mmc_config *cfg = &plat->cfg;
|
|
|
|
cfg->name = dev->name;
|
|
cfg->host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_8BIT;
|
|
cfg->voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34;
|
|
cfg->f_min = 1000000;
|
|
cfg->f_max = 52000000;
|
|
cfg->b_max = U32_MAX;
|
|
|
|
return mmc_bind(dev, &plat->mmc, cfg);
|
|
}
|
|
|
|
int sandbox_mmc_unbind(struct udevice *dev)
|
|
{
|
|
mmc_unbind(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id sandbox_mmc_ids[] = {
|
|
{ .compatible = "sandbox,mmc" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(mmc_sandbox) = {
|
|
.name = "mmc_sandbox",
|
|
.id = UCLASS_MMC,
|
|
.of_match = sandbox_mmc_ids,
|
|
.ops = &sandbox_mmc_ops,
|
|
.bind = sandbox_mmc_bind,
|
|
.unbind = sandbox_mmc_unbind,
|
|
.probe = sandbox_mmc_probe,
|
|
.platdata_auto_alloc_size = sizeof(struct sandbox_mmc_plat),
|
|
};
|