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common: sf_command: Add ram region validation

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Signed-off-by: Vandhiadevan Karunamoorthy <vkarunam@codeaurora.org>
Change-Id: I36a48bae392388cfd565c6a351f01247959bb613
This commit is contained in:
Vandhiadevan Karunamoorthy 2021-02-02 18:11:31 +05:30
parent 64af2446f8
commit 73966739fb
1 changed files with 13 additions and 0 deletions
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13
common/cmd_sf.c
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@ -19,6 +19,8 @@
#include <asm/io.h> #include <asm/io.h>
#include <dm/device-internal.h> #include <dm/device-internal.h>
DECLARE_GLOBAL_DATA_PTR;
static struct spi_flash *flash; static struct spi_flash *flash;
/* /*
@ -265,6 +267,7 @@ static int do_spi_flash_read_write(int argc, char * const argv[])
int ret = 1; int ret = 1;
int dev = 0; int dev = 0;
loff_t offset, len, maxsize; loff_t offset, len, maxsize;
unsigned long sram_end = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
if (argc < 3) if (argc < 3)
return -1; return -1;
@ -283,6 +286,16 @@ static int do_spi_flash_read_write(int argc, char * const argv[])
argv[0], flash->size); argv[0], flash->size);
return 1; return 1;
} }
/* Validate DDR region address */
if ((addr < CONFIG_SYS_SDRAM_BASE) || (addr > (sram_end - 1))) {
puts("Invalid RAM address \n");
return 1;
}
if ((addr + len) > sram_end) {
puts("No space available\n");
return 1;
}
buf = map_physmem(addr, len, MAP_WRBACK); buf = map_physmem(addr, len, MAP_WRBACK);
if (!buf) { if (!buf) {