mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-07 13:44:29 +00:00
fceea99268
Older kernel versions or systems which do not connect eMMC reset line properly may not be able to handle situations where either the eMMC is left in HS200/HS400 mode or SD card in UHS modes by the bootloader and may misbehave. Downgrade the eMMC to HS/HS52 mode and/or SD card to non-UHS mode before booting the kernel to allow such older kernels to work with modern U-Boot. Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> Cc: Tom Rini <trini@konsulko.com>
417 lines
8.7 KiB
C
417 lines
8.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <mmc.h>
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#include <dm.h>
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#include <dm/device-internal.h>
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#include <dm/lists.h>
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#include "mmc_private.h"
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int dm_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
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struct mmc_data *data)
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{
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struct mmc *mmc = mmc_get_mmc_dev(dev);
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struct dm_mmc_ops *ops = mmc_get_ops(dev);
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int ret;
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mmmc_trace_before_send(mmc, cmd);
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if (ops->send_cmd)
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ret = ops->send_cmd(dev, cmd, data);
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else
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ret = -ENOSYS;
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mmmc_trace_after_send(mmc, cmd, ret);
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return ret;
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}
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int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
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{
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return dm_mmc_send_cmd(mmc->dev, cmd, data);
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}
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int dm_mmc_set_ios(struct udevice *dev)
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{
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struct dm_mmc_ops *ops = mmc_get_ops(dev);
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if (!ops->set_ios)
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return -ENOSYS;
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return ops->set_ios(dev);
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}
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int mmc_set_ios(struct mmc *mmc)
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{
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return dm_mmc_set_ios(mmc->dev);
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}
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void dm_mmc_send_init_stream(struct udevice *dev)
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{
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struct dm_mmc_ops *ops = mmc_get_ops(dev);
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if (ops->send_init_stream)
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ops->send_init_stream(dev);
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}
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void mmc_send_init_stream(struct mmc *mmc)
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{
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dm_mmc_send_init_stream(mmc->dev);
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}
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#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
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int dm_mmc_wait_dat0(struct udevice *dev, int state, int timeout)
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{
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struct dm_mmc_ops *ops = mmc_get_ops(dev);
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if (!ops->wait_dat0)
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return -ENOSYS;
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return ops->wait_dat0(dev, state, timeout);
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}
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int mmc_wait_dat0(struct mmc *mmc, int state, int timeout)
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{
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return dm_mmc_wait_dat0(mmc->dev, state, timeout);
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}
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#endif
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int dm_mmc_get_wp(struct udevice *dev)
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{
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struct dm_mmc_ops *ops = mmc_get_ops(dev);
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if (!ops->get_wp)
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return -ENOSYS;
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return ops->get_wp(dev);
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}
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int mmc_getwp(struct mmc *mmc)
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{
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return dm_mmc_get_wp(mmc->dev);
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}
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int dm_mmc_get_cd(struct udevice *dev)
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{
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struct dm_mmc_ops *ops = mmc_get_ops(dev);
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if (!ops->get_cd)
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return -ENOSYS;
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return ops->get_cd(dev);
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}
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int mmc_getcd(struct mmc *mmc)
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{
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return dm_mmc_get_cd(mmc->dev);
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}
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#ifdef MMC_SUPPORTS_TUNING
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int dm_mmc_execute_tuning(struct udevice *dev, uint opcode)
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{
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struct dm_mmc_ops *ops = mmc_get_ops(dev);
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if (!ops->execute_tuning)
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return -ENOSYS;
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return ops->execute_tuning(dev, opcode);
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}
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int mmc_execute_tuning(struct mmc *mmc, uint opcode)
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{
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return dm_mmc_execute_tuning(mmc->dev, opcode);
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}
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#endif
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int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg)
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{
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int val;
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val = dev_read_u32_default(dev, "bus-width", 1);
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switch (val) {
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case 0x8:
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cfg->host_caps |= MMC_MODE_8BIT;
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/* fall through */
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case 0x4:
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cfg->host_caps |= MMC_MODE_4BIT;
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/* fall through */
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case 0x1:
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cfg->host_caps |= MMC_MODE_1BIT;
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break;
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default:
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dev_err(dev, "Invalid \"bus-width\" value %u!\n", val);
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return -EINVAL;
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}
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/* f_max is obtained from the optional "max-frequency" property */
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dev_read_u32(dev, "max-frequency", &cfg->f_max);
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if (dev_read_bool(dev, "cap-sd-highspeed"))
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cfg->host_caps |= MMC_CAP(SD_HS);
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if (dev_read_bool(dev, "cap-mmc-highspeed"))
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cfg->host_caps |= MMC_CAP(MMC_HS);
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if (dev_read_bool(dev, "sd-uhs-sdr12"))
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cfg->host_caps |= MMC_CAP(UHS_SDR12);
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if (dev_read_bool(dev, "sd-uhs-sdr25"))
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cfg->host_caps |= MMC_CAP(UHS_SDR25);
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if (dev_read_bool(dev, "sd-uhs-sdr50"))
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cfg->host_caps |= MMC_CAP(UHS_SDR50);
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if (dev_read_bool(dev, "sd-uhs-sdr104"))
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cfg->host_caps |= MMC_CAP(UHS_SDR104);
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if (dev_read_bool(dev, "sd-uhs-ddr50"))
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cfg->host_caps |= MMC_CAP(UHS_DDR50);
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if (dev_read_bool(dev, "mmc-ddr-1_8v"))
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cfg->host_caps |= MMC_CAP(MMC_DDR_52);
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if (dev_read_bool(dev, "mmc-ddr-1_2v"))
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cfg->host_caps |= MMC_CAP(MMC_DDR_52);
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if (dev_read_bool(dev, "mmc-hs200-1_8v"))
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cfg->host_caps |= MMC_CAP(MMC_HS_200);
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if (dev_read_bool(dev, "mmc-hs200-1_2v"))
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cfg->host_caps |= MMC_CAP(MMC_HS_200);
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if (dev_read_bool(dev, "mmc-hs400-1_8v"))
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cfg->host_caps |= MMC_CAP(MMC_HS_400);
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if (dev_read_bool(dev, "mmc-hs400-1_2v"))
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cfg->host_caps |= MMC_CAP(MMC_HS_400);
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return 0;
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}
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struct mmc *mmc_get_mmc_dev(struct udevice *dev)
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{
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struct mmc_uclass_priv *upriv;
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if (!device_active(dev))
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return NULL;
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upriv = dev_get_uclass_priv(dev);
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return upriv->mmc;
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}
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#if CONFIG_IS_ENABLED(BLK)
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struct mmc *find_mmc_device(int dev_num)
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{
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struct udevice *dev, *mmc_dev;
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int ret;
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ret = blk_find_device(IF_TYPE_MMC, dev_num, &dev);
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if (ret) {
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#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
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printf("MMC Device %d not found\n", dev_num);
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#endif
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return NULL;
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}
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mmc_dev = dev_get_parent(dev);
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struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
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return mmc;
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}
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int get_mmc_num(void)
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{
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return max((blk_find_max_devnum(IF_TYPE_MMC) + 1), 0);
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}
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int mmc_get_next_devnum(void)
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{
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return blk_find_max_devnum(IF_TYPE_MMC);
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}
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struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
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{
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struct blk_desc *desc;
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struct udevice *dev;
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device_find_first_child(mmc->dev, &dev);
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if (!dev)
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return NULL;
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desc = dev_get_uclass_platdata(dev);
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return desc;
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}
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void mmc_do_preinit(void)
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{
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struct udevice *dev;
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struct uclass *uc;
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int ret;
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ret = uclass_get(UCLASS_MMC, &uc);
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if (ret)
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return;
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uclass_foreach_dev(dev, uc) {
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struct mmc *m = mmc_get_mmc_dev(dev);
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if (!m)
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continue;
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#ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
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mmc_set_preinit(m, 1);
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#endif
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if (m->preinit)
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mmc_start_init(m);
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}
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}
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#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
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void print_mmc_devices(char separator)
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{
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struct udevice *dev;
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char *mmc_type;
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bool first = true;
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for (uclass_first_device(UCLASS_MMC, &dev);
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dev;
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uclass_next_device(&dev), first = false) {
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struct mmc *m = mmc_get_mmc_dev(dev);
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if (!first) {
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printf("%c", separator);
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if (separator != '\n')
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puts(" ");
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}
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if (m->has_init)
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mmc_type = IS_SD(m) ? "SD" : "eMMC";
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else
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mmc_type = NULL;
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printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
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if (mmc_type)
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printf(" (%s)", mmc_type);
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}
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printf("\n");
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}
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#else
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void print_mmc_devices(char separator) { }
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#endif
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int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
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{
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struct blk_desc *bdesc;
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struct udevice *bdev;
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int ret, devnum = -1;
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if (!mmc_get_ops(dev))
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return -ENOSYS;
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#ifndef CONFIG_SPL_BUILD
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/* Use the fixed index with aliase node's index */
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ret = dev_read_alias_seq(dev, &devnum);
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debug("%s: alias ret=%d, devnum=%d\n", __func__, ret, devnum);
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#endif
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ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC,
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devnum, 512, 0, &bdev);
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if (ret) {
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debug("Cannot create block device\n");
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return ret;
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}
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bdesc = dev_get_uclass_platdata(bdev);
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mmc->cfg = cfg;
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mmc->priv = dev;
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/* the following chunk was from mmc_register() */
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/* Setup dsr related values */
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mmc->dsr_imp = 0;
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mmc->dsr = 0xffffffff;
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/* Setup the universal parts of the block interface just once */
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bdesc->removable = 1;
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/* setup initial part type */
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bdesc->part_type = cfg->part_type;
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mmc->dev = dev;
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return 0;
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}
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int mmc_unbind(struct udevice *dev)
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{
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struct udevice *bdev;
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device_find_first_child(dev, &bdev);
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if (bdev) {
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device_remove(bdev, DM_REMOVE_NORMAL);
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device_unbind(bdev);
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}
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return 0;
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}
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static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
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{
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struct udevice *mmc_dev = dev_get_parent(bdev);
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struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
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struct blk_desc *desc = dev_get_uclass_platdata(bdev);
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if (desc->hwpart == hwpart)
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return 0;
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if (mmc->part_config == MMCPART_NOAVAILABLE)
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return -EMEDIUMTYPE;
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return mmc_switch_part(mmc, hwpart);
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}
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static int mmc_blk_probe(struct udevice *dev)
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{
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struct udevice *mmc_dev = dev_get_parent(dev);
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struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
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struct mmc *mmc = upriv->mmc;
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int ret;
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ret = mmc_init(mmc);
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if (ret) {
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debug("%s: mmc_init() failed (err=%d)\n", __func__, ret);
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return ret;
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}
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return 0;
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}
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#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
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CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
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CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
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static int mmc_blk_remove(struct udevice *dev)
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{
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struct udevice *mmc_dev = dev_get_parent(dev);
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struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc_dev);
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struct mmc *mmc = upriv->mmc;
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return mmc_deinit(mmc);
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}
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#endif
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static const struct blk_ops mmc_blk_ops = {
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.read = mmc_bread,
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#if CONFIG_IS_ENABLED(MMC_WRITE)
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.write = mmc_bwrite,
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.erase = mmc_berase,
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#endif
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.select_hwpart = mmc_select_hwpart,
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};
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U_BOOT_DRIVER(mmc_blk) = {
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.name = "mmc_blk",
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.id = UCLASS_BLK,
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.ops = &mmc_blk_ops,
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.probe = mmc_blk_probe,
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#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \
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CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \
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CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
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.remove = mmc_blk_remove,
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.flags = DM_FLAG_OS_PREPARE,
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#endif
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};
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#endif /* CONFIG_BLK */
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U_BOOT_DRIVER(mmc) = {
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.name = "mmc",
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.id = UCLASS_MMC,
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};
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UCLASS_DRIVER(mmc) = {
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.id = UCLASS_MMC,
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.name = "mmc",
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.flags = DM_UC_FLAG_SEQ_ALIAS,
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.per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
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};
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