mirror of
https://github.com/brain-hackers/u-boot-brain
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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
236 lines
4.1 KiB
C
236 lines
4.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2016 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 <malloc.h>
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#include <mmc.h>
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#include "mmc_private.h"
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static struct list_head mmc_devices;
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static int cur_dev_num = -1;
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#if !CONFIG_IS_ENABLED(MMC_TINY)
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struct mmc *find_mmc_device(int dev_num)
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{
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struct mmc *m;
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struct list_head *entry;
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list_for_each(entry, &mmc_devices) {
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m = list_entry(entry, struct mmc, link);
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if (m->block_dev.devnum == dev_num)
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return m;
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}
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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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int mmc_get_next_devnum(void)
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{
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return cur_dev_num++;
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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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return &mmc->block_dev;
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}
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int get_mmc_num(void)
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{
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return cur_dev_num;
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}
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void mmc_do_preinit(void)
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{
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struct mmc *m;
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struct list_head *entry;
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list_for_each(entry, &mmc_devices) {
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m = list_entry(entry, struct mmc, link);
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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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#endif
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void mmc_list_init(void)
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{
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INIT_LIST_HEAD(&mmc_devices);
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cur_dev_num = 0;
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}
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void mmc_list_add(struct mmc *mmc)
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{
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INIT_LIST_HEAD(&mmc->link);
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list_add_tail(&mmc->link, &mmc_devices);
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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 mmc *m;
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struct list_head *entry;
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char *mmc_type;
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list_for_each(entry, &mmc_devices) {
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m = list_entry(entry, struct mmc, link);
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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, m->block_dev.devnum);
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if (mmc_type)
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printf(" (%s)", mmc_type);
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if (entry->next != &mmc_devices) {
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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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}
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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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#if CONFIG_IS_ENABLED(MMC_TINY)
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static struct mmc mmc_static = {
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.dsr_imp = 0,
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.dsr = 0xffffffff,
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.block_dev = {
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.if_type = IF_TYPE_MMC,
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.removable = 1,
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.devnum = 0,
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.block_read = mmc_bread,
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.block_write = mmc_bwrite,
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.block_erase = mmc_berase,
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.part_type = 0,
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},
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};
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struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
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{
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struct mmc *mmc = &mmc_static;
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mmc->cfg = cfg;
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mmc->priv = priv;
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return mmc;
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}
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void mmc_destroy(struct mmc *mmc)
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{
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}
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#else
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struct mmc *mmc_create(const struct mmc_config *cfg, void *priv)
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{
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struct blk_desc *bdesc;
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struct mmc *mmc;
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/* quick validation */
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if (cfg == NULL || cfg->f_min == 0 ||
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cfg->f_max == 0 || cfg->b_max == 0)
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return NULL;
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#if !CONFIG_IS_ENABLED(DM_MMC)
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if (cfg->ops == NULL || cfg->ops->send_cmd == NULL)
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return NULL;
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#endif
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mmc = calloc(1, sizeof(*mmc));
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if (mmc == NULL)
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return NULL;
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mmc->cfg = cfg;
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mmc->priv = priv;
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/* the following chunk was 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 = mmc_get_blk_desc(mmc);
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bdesc->if_type = IF_TYPE_MMC;
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bdesc->removable = 1;
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bdesc->devnum = mmc_get_next_devnum();
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bdesc->block_read = mmc_bread;
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bdesc->block_write = mmc_bwrite;
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bdesc->block_erase = mmc_berase;
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/* setup initial part type */
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bdesc->part_type = mmc->cfg->part_type;
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mmc_list_add(mmc);
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return mmc;
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}
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void mmc_destroy(struct mmc *mmc)
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{
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/* only freeing memory for now */
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free(mmc);
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}
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#endif
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static int mmc_select_hwpartp(struct blk_desc *desc, int hwpart)
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{
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struct mmc *mmc = find_mmc_device(desc->devnum);
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int ret;
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if (!mmc)
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return -ENODEV;
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if (mmc->block_dev.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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ret = mmc_switch_part(mmc, hwpart);
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if (ret)
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return ret;
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return 0;
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}
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static int mmc_get_dev(int dev, struct blk_desc **descp)
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{
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struct mmc *mmc = find_mmc_device(dev);
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int ret;
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if (!mmc)
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return -ENODEV;
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ret = mmc_init(mmc);
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if (ret)
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return ret;
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*descp = &mmc->block_dev;
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return 0;
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}
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U_BOOT_LEGACY_BLK(mmc) = {
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.if_typename = "mmc",
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.if_type = IF_TYPE_MMC,
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.max_devs = -1,
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.get_dev = mmc_get_dev,
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.select_hwpart = mmc_select_hwpartp,
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};
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