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ARM: qca: mmc protection based on gpt attribute

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If readonly bit of gpt attribute is set,
power-on write protection will be enabled.

Change-Id: I7dd9250fd592988626e889f92f07c6839585eb7d
Signed-off-by: Gokul Sriram Palanisamy <gokulsri@codeaurora.org>
This commit is contained in:
Gokul Sriram Palanisamy 2017-11-28 07:22:01 +05:30 • committed by Gerrit - the friendly Code Review server
parent 201def52b9
commit 735b05f59c
4 changed files with 56 additions and 0 deletions
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45
board/qca/arm/common/board_init.c
View file

@ -16,7 +16,10 @@
#include <asm/arch-qca-common/smem.h>
#include <asm/arch-qca-common/uart.h>
#include <asm/arch-qca-common/gpio.h>
#include <memalign.h>
#include <fdtdec.h>
#include <mmc.h>
#include <sdhci.h>
DECLARE_GLOBAL_DATA_PTR;
@ -31,6 +34,12 @@ extern int sf_saveenv(void);
extern env_t *mmc_env_ptr;
extern char *mmc_env_name_spec;
extern int mmc_saveenv(void);
#ifndef CONFIG_SDHCI_SUPPORT
extern qca_mmc mmc_host;
#else
extern struct sdhci_host mmc_host;
#endif
#endif
env_t *env_ptr;
@ -222,6 +231,39 @@ int board_early_init_f(void)
return 0;
}
#ifdef CONFIG_FLASH_PROTECT
void board_flash_protect(void)
{
unsigned int num_part;
int i;
#ifdef CONFIG_QCA_MMC
block_dev_desc_t *mmc_dev;
disk_partition_t info;
mmc_dev = mmc_get_dev(mmc_host.dev_num);
if (mmc_dev != NULL && mmc_dev->type != DEV_TYPE_UNKNOWN) {
ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header,
gpt_head, 1, mmc_dev->blksz);
if (mmc_dev->block_read(mmc_dev->dev,
(lbaint_t)GPT_PRIMARY_PARTITION_TABLE_LBA,
1, gpt_head) == 1) {
num_part = le32_to_cpu(gpt_head->num_partition_entries);
for (i = 1; i <= num_part; i++) {
if (!get_partition_info_efi(mmc_dev, i, &info)
&& info.readonly
&& !mmc_write_protect(mmc_host.mmc,
info.start,
info.size, 1))
printf("\"%s\""
"-protected MMC partition\n",
info.name);
}
}
}
#endif
}
#endif
int board_late_init(void)
{
unsigned int machid;
@ -238,6 +280,9 @@ int board_late_init(void)
setenv_addr("machid", (void *)machid);
gd->bd->bi_arch_number = machid;
}
#ifdef CONFIG_FLASH_PROTECT
board_flash_protect();
#endif
set_ethmac_addr();
return 0;
}

9
disk/part_efi.c
View file

@ -70,6 +70,14 @@ static inline int is_bootable(gpt_entry *p)
sizeof(efi_guid_t));
}
static inline int is_readonly(gpt_entry *p)
{
/* bit 60 of gpt attribute denotes read-only flag */
if (p->attributes.raw & ((unsigned long long)1 << 60))
return 1;
return 0;
}
static int validate_gpt_header(gpt_header *gpt_h, lbaint_t lba,
lbaint_t lastlba)
{
@ -283,6 +291,7 @@ int get_partition_info_efi(block_dev_desc_t * dev_desc, int part,
print_efiname(&gpt_pte[part - 1]));
snprintf((char *)info->type, sizeof(info->type), "U-Boot");
info->bootable = is_bootable(&gpt_pte[part - 1]);
info->readonly = is_readonly(&gpt_pte[part - 1]);
#ifdef CONFIG_PARTITION_UUIDS
uuid_bin_to_str(gpt_pte[part - 1].unique_partition_guid.b, info->uuid,
UUID_STR_FORMAT_GUID);

1
include/configs/ipq807x.h
View file

@ -137,6 +137,7 @@ extern loff_t board_env_size;
#define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE_MAX + (1024 << 10))
#define CONFIG_ENV_IS_IN_NAND 1
#define CONFIG_FLASH_PROTECT
/* Allow to overwrite serial and ethaddr */
#define CONFIG_ENV_OVERWRITE

1
include/part.h
View file

@ -96,6 +96,7 @@ typedef struct disk_partition {
#ifdef CONFIG_PARTITION_TYPE_GUID
char type_guid[37]; /* type GUID as string, if exists */
#endif
int readonly; /* read-only flag is set */
} disk_partition_t;
/* Misc _get_dev functions */