mirror of
https://git.codelinaro.org/clo/qsdk/oss/boot/u-boot-2016.git
synced 2025-12-10 07:44:53 +01:00
6878c037e3
This change is for mounting the rootfs partition in kernel based on UUID(Universally Unique IDentifier). In embedded system it is common to store rootfs on SD card or eMMC. Typically the kernel command line has like: root=/dev/mmcblk0p20 to tell the kernel where to look for rootfs partition. The problem in this approach is the eMMC device number can vary based on wether the SD card present or not in the SD card slot. Also depending on kernel version the eMMC device number can vary. This means passing the eMMC device for specifying the rootfs location is not robust approach. If SD card first get detected then the base minor 0 is assigned to SD card and kernel will try to mount rootfs from SD card and if there is no rootfs present on SD card then kernel fail to mount the rootfs. Change-Id: Ia9e6dded61292bed8a10a40fd3cb86f4026393eb Signed-off-by: Md Sadre Alam <mdalam@codeaurora.org>
86 lines
2.2 KiB
C
86 lines
2.2 KiB
C
/*
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* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef ___QCA_COMMON_H_
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#define ___QCA_COMMON_H_
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#include <asm/u-boot.h>
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#include <asm/arch-qca-common/smem.h>
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#ifdef CONFIG_IPQ807x
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#include <asm/arch-ipq807x/clk.h>
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#endif
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#ifdef CONFIG_IPQ40xx
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#include <asm/arch-ipq40xx/clk.h>
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#endif
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#ifdef CONFIG_IPQ806x
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#include <asm/arch-ipq806x/clock.h>
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#endif
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struct ipq_i2c_platdata {
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int type;
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};
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typedef struct {
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uint base;
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uint clk_mode;
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struct mmc *mmc;
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int dev_num;
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} qca_mmc;
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/* Reserved-memory node names and register value*/
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typedef struct {
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const char *nodename;
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u32 val[2];
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} add_node_t;
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int qca_mmc_init(bd_t *, qca_mmc *);
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void board_mmc_deinit(void);
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void set_flash_secondary_type(qca_smem_flash_info_t *);
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void dump_func(void);
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int do_dumpqca_flash_data(const char *);
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int apps_iscrashed(void);
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int set_uuid_bootargs(char *boot_args, char *part_name, int buflen, bool gpt_flag);
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struct dumpinfo_t{
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char name[16]; /* use only file name in 8.3 format */
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uint32_t start;
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uint32_t size;
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int is_aligned_access; /* non zero represent 4 byte access */
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uint32_t is_redirected; /* If this flag is set, 'start' is considered a ptr
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* to address to be dumped
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*/
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uint32_t offset; /* offset to be added to start address */
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};
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extern struct dumpinfo_t dumpinfo_n[];
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extern int dump_entries_n;
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extern struct dumpinfo_t dumpinfo_s[];
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extern int dump_entries_s;
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#define MSM_SDC1_BASE 0x7824000
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#define MSM_SDC1_MCI_HC_MODE 0x7824078
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#define MSM_SDC1_SDHCI_BASE 0x7824900
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#define MMC_IDENTIFY_MODE 0
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#define MMC_DATA_TRANSFER_MODE 1
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#define MMC_DATA_TRANSFER_SDHCI_MODE 2
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#define MMC_MODE_HC 0x800
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#define SPI_DEFAULT_ADDR_LEN 3
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#define SPI_MAX_ADDR_LEN 4
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#define MAX_BOOT_ARGS_SIZE 64
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#endif /* __QCA_COMMON_H_ */
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