[people/ms/u-boot.git] / common / fb_mmc.c

/*
 * Copyright 2014 Broadcom Corporation.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <config.h>
#include <common.h>
#include <fb_mmc.h>
#include <part.h>
#include <aboot.h>
#include <sparse_format.h>
#include <mmc.h>

#ifndef CONFIG_FASTBOOT_GPT_NAME
#define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME
#endif

/* The 64 defined bytes plus the '\0' */
#define RESPONSE_LEN	(64 + 1)

static char *response_str;

void fastboot_fail(const char *s)
{
	strncpy(response_str, "FAIL\0", 5);
	strncat(response_str, s, RESPONSE_LEN - 4 - 1);
}

void fastboot_okay(const char *s)
{
	strncpy(response_str, "OKAY\0", 5);
	strncat(response_str, s, RESPONSE_LEN - 4 - 1);
}

static void write_raw_image(block_dev_desc_t *dev_desc, disk_partition_t *info,
		const char *part_name, void *buffer,
		unsigned int download_bytes)
{
	lbaint_t blkcnt;
	lbaint_t blks;

	/* determine number of blocks to write */
	blkcnt = ((download_bytes + (info->blksz - 1)) & ~(info->blksz - 1));
	blkcnt = blkcnt / info->blksz;

	if (blkcnt > info->size) {
		error("too large for partition: '%s'\n", part_name);
		fastboot_fail("too large for partition");
		return;
	}

	puts("Flashing Raw Image\n");

	blks = dev_desc->block_write(dev_desc->dev, info->start, blkcnt,
				     buffer);
	if (blks != blkcnt) {
		error("failed writing to device %d\n", dev_desc->dev);
		fastboot_fail("failed writing to device");
		return;
	}

	printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz,
	       part_name);
	fastboot_okay("");
}

void fb_mmc_flash_write(const char *cmd, void *download_buffer,
			unsigned int download_bytes, char *response)
{
	block_dev_desc_t *dev_desc;
	disk_partition_t info;

	/* initialize the response buffer */
	response_str = response;

	dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
	if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
		error("invalid mmc device\n");
		fastboot_fail("invalid mmc device");
		return;
	}

	if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0) {
		printf("%s: updating MBR, Primary and Backup GPT(s)\n",
		       __func__);
		if (is_valid_gpt_buf(dev_desc, download_buffer)) {
			printf("%s: invalid GPT - refusing to write to flash\n",
			       __func__);
			fastboot_fail("invalid GPT partition");
			return;
		}
		if (write_mbr_and_gpt_partitions(dev_desc, download_buffer)) {
			printf("%s: writing GPT partitions failed\n", __func__);
			fastboot_fail("writing GPT partitions failed");
			return;
		}
		printf("........ success\n");
		fastboot_okay("");
		return;
	} else if (get_partition_info_efi_by_name(dev_desc, cmd, &info)) {
		error("cannot find partition: '%s'\n", cmd);
		fastboot_fail("cannot find partition");
		return;
	}

	if (is_sparse_image(download_buffer))
		write_sparse_image(dev_desc, &info, cmd, download_buffer,
				   download_bytes);
	else
		write_raw_image(dev_desc, &info, cmd, download_buffer,
				download_bytes);
}

void fb_mmc_erase(const char *cmd, char *response)
{
	int ret;
	block_dev_desc_t *dev_desc;
	disk_partition_t info;
	lbaint_t blks, blks_start, blks_size, grp_size;
	struct mmc *mmc = find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV);

	if (mmc == NULL) {
		error("invalid mmc device");
		fastboot_fail("invalid mmc device");
		return;
	}

	/* initialize the response buffer */
	response_str = response;

	dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
	if (!dev_desc || dev_desc->type == DEV_TYPE_UNKNOWN) {
		error("invalid mmc device");
		fastboot_fail("invalid mmc device");
		return;
	}

	ret = get_partition_info_efi_by_name(dev_desc, cmd, &info);
	if (ret) {
		error("cannot find partition: '%s'", cmd);
		fastboot_fail("cannot find partition");
		return;
	}

	/* Align blocks to erase group size to avoid erasing other partitions */
	grp_size = mmc->erase_grp_size;
	blks_start = (info.start + grp_size - 1) & ~(grp_size - 1);
	if (info.size >= grp_size)
		blks_size = (info.size - (blks_start - info.start)) &
				(~(grp_size - 1));
	else
		blks_size = 0;

	printf("Erasing blocks " LBAFU " to " LBAFU " due to alignment\n",
	       blks_start, blks_start + blks_size);

	blks = dev_desc->block_erase(dev_desc->dev, blks_start, blks_size);
	if (blks != blks_size) {
		error("failed erasing from device %d", dev_desc->dev);
		fastboot_fail("failed erasing from device");
		return;
	}

	printf("........ erased " LBAFU " bytes from '%s'\n",
	       blks_size * info.blksz, cmd);
	fastboot_okay("");
}
Commit	Line	Data
c0aebb33 SR	1	/*
	2	* Copyright 2014 Broadcom Corporation.
	3	*
	4	* SPDX-License-Identifier: GPL-2.0+
	5	*/
	6
0ff7e585	7	#include <config.h>
c0aebb33 SR	8	#include <common.h>
	9	#include <fb_mmc.h>
	10	#include <part.h>
e5bf9878 SR	11	#include <aboot.h>
e5bf9878 SR	12	#include <sparse_format.h>
89792381	13	#include <mmc.h>
c0aebb33	14
0ff7e585 SR	15	#ifndef CONFIG_FASTBOOT_GPT_NAME
	16	#define CONFIG_FASTBOOT_GPT_NAME GPT_ENTRY_NAME
	17	#endif
	18
c0aebb33 SR	19	/* The 64 defined bytes plus the '\0' */
	20	#define RESPONSE_LEN (64 + 1)
	21
	22	static char *response_str;
	23
e5bf9878	24	void fastboot_fail(const char *s)
c0aebb33	25	{
e8742071	26	strncpy(response_str, "FAIL\0", 5);
e5bf9878 SR	27	strncat(response_str, s, RESPONSE_LEN - 4 - 1);
	28	}
	29
	30	void fastboot_okay(const char *s)
	31	{
e8742071	32	strncpy(response_str, "OKAY\0", 5);
e5bf9878	33	strncat(response_str, s, RESPONSE_LEN - 4 - 1);
c0aebb33 SR	34	}
	35
	36	static void write_raw_image(block_dev_desc_t dev_desc, disk_partition_t info,
	37	const char part_name, void buffer,
	38	unsigned int download_bytes)
	39	{
	40	lbaint_t blkcnt;
	41	lbaint_t blks;
	42
	43	/* determine number of blocks to write */
	44	blkcnt = ((download_bytes + (info->blksz - 1)) & ~(info->blksz - 1));
	45	blkcnt = blkcnt / info->blksz;
	46
	47	if (blkcnt > info->size) {
	48	error("too large for partition: '%s'\n", part_name);
e5bf9878	49	fastboot_fail("too large for partition");
c0aebb33 SR	50	return;
	51	}
	52
	53	puts("Flashing Raw Image\n");
	54
	55	blks = dev_desc->block_write(dev_desc->dev, info->start, blkcnt,
	56	buffer);
	57	if (blks != blkcnt) {
	58	error("failed writing to device %d\n", dev_desc->dev);
e5bf9878	59	fastboot_fail("failed writing to device");
c0aebb33 SR	60	return;
	61	}
	62
	63	printf("........ wrote " LBAFU " bytes to '%s'\n", blkcnt * info->blksz,
	64	part_name);
e5bf9878	65	fastboot_okay("");
c0aebb33 SR	66	}
	67
	68	void fb_mmc_flash_write(const char cmd, void download_buffer,
	69	unsigned int download_bytes, char *response)
	70	{
c0aebb33 SR	71	block_dev_desc_t *dev_desc;
	72	disk_partition_t info;
	73
	74	/* initialize the response buffer */
	75	response_str = response;
	76
	77	dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
	78	if (!dev_desc \|\| dev_desc->type == DEV_TYPE_UNKNOWN) {
	79	error("invalid mmc device\n");
e5bf9878	80	fastboot_fail("invalid mmc device");
c0aebb33 SR	81	return;
	82	}
	83
0ff7e585 SR	84	if (strcmp(cmd, CONFIG_FASTBOOT_GPT_NAME) == 0) {
	85	printf("%s: updating MBR, Primary and Backup GPT(s)\n",
	86	__func__);
	87	if (is_valid_gpt_buf(dev_desc, download_buffer)) {
	88	printf("%s: invalid GPT - refusing to write to flash\n",
	89	__func__);
	90	fastboot_fail("invalid GPT partition");
	91	return;
	92	}
	93	if (write_mbr_and_gpt_partitions(dev_desc, download_buffer)) {
	94	printf("%s: writing GPT partitions failed\n", __func__);
	95	fastboot_fail("writing GPT partitions failed");
	96	return;
	97	}
	98	printf("........ success\n");
	99	fastboot_okay("");
	100	return;
	101	} else if (get_partition_info_efi_by_name(dev_desc, cmd, &info)) {
c0aebb33	102	error("cannot find partition: '%s'\n", cmd);
e5bf9878	103	fastboot_fail("cannot find partition");
c0aebb33 SR	104	return;
	105	}
	106
e5bf9878 SR	107	if (is_sparse_image(download_buffer))
	108	write_sparse_image(dev_desc, &info, cmd, download_buffer,
	109	download_bytes);
	110	else
	111	write_raw_image(dev_desc, &info, cmd, download_buffer,
	112	download_bytes);
c0aebb33	113	}
89792381 DK	114
	115	void fb_mmc_erase(const char cmd, char response)
	116	{
	117	int ret;
	118	block_dev_desc_t *dev_desc;
	119	disk_partition_t info;
	120	lbaint_t blks, blks_start, blks_size, grp_size;
	121	struct mmc *mmc = find_mmc_device(CONFIG_FASTBOOT_FLASH_MMC_DEV);
	122
	123	if (mmc == NULL) {
	124	error("invalid mmc device");
	125	fastboot_fail("invalid mmc device");
	126	return;
	127	}
	128
	129	/* initialize the response buffer */
	130	response_str = response;
	131
	132	dev_desc = get_dev("mmc", CONFIG_FASTBOOT_FLASH_MMC_DEV);
	133	if (!dev_desc \|\| dev_desc->type == DEV_TYPE_UNKNOWN) {
	134	error("invalid mmc device");
	135	fastboot_fail("invalid mmc device");
	136	return;
	137	}
	138
	139	ret = get_partition_info_efi_by_name(dev_desc, cmd, &info);
	140	if (ret) {
	141	error("cannot find partition: '%s'", cmd);
	142	fastboot_fail("cannot find partition");
	143	return;
	144	}
	145
	146	/* Align blocks to erase group size to avoid erasing other partitions */
	147	grp_size = mmc->erase_grp_size;
	148	blks_start = (info.start + grp_size - 1) & ~(grp_size - 1);
	149	if (info.size >= grp_size)
	150	blks_size = (info.size - (blks_start - info.start)) &
	151	(~(grp_size - 1));
	152	else
	153	blks_size = 0;
	154
	155	printf("Erasing blocks " LBAFU " to " LBAFU " due to alignment\n",
	156	blks_start, blks_start + blks_size);
	157
	158	blks = dev_desc->block_erase(dev_desc->dev, blks_start, blks_size);
	159	if (blks != blks_size) {
	160	error("failed erasing from device %d", dev_desc->dev);
	161	fastboot_fail("failed erasing from device");
	162	return;
	163	}
	164
	165	printf("........ erased " LBAFU " bytes from '%s'\n",
	166	blks_size * info.blksz, cmd);
	167	fastboot_okay("");
	168	}