diff options
Diffstat (limited to 'plat/imx/imx8dxl/imx8dxl_bl31_setup.c')
| -rw-r--r-- | plat/imx/imx8dxl/imx8dxl_bl31_setup.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/plat/imx/imx8dxl/imx8dxl_bl31_setup.c b/plat/imx/imx8dxl/imx8dxl_bl31_setup.c index 147e7c02..daea57d1 100644 --- a/plat/imx/imx8dxl/imx8dxl_bl31_setup.c +++ b/plat/imx/imx8dxl/imx8dxl_bl31_setup.c @@ -29,6 +29,7 @@ #include <imx_sip_svc.h> #include <string.h> +#define DATA_SECTION_RESTORE_FLAG 0x11223344 #define TRUSTY_PARAMS_LEN_BYTES (4096*2) IMPORT_SYM(unsigned long, __COHERENT_RAM_START__, BL31_COHERENT_RAM_START); @@ -37,6 +38,8 @@ IMPORT_SYM(unsigned long, __RO_START__, BL31_RO_START); IMPORT_SYM(unsigned long, __RO_END__, BL31_RO_END); IMPORT_SYM(unsigned long, __RW_START__, BL31_RW_START); IMPORT_SYM(unsigned long, __RW_END__, BL31_RW_END); +IMPORT_SYM(unsigned long, __DATA_START__, BL31_DATA_START); +IMPORT_SYM(unsigned long, __DATA_END__, BL31_DATA_END); #if DEBUG_CONSOLE extern unsigned long console_list; @@ -376,6 +379,20 @@ void imx8_partition_resources(void) void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, u_register_t arg2, u_register_t arg3) { + unsigned int count = (BL31_DATA_END - BL31_DATA_START) / 4; + unsigned int *data = (unsigned int *)(BL31_LIMIT - (BL31_DATA_END - BL31_DATA_START) - 0x4); + unsigned *ptr = (unsigned int *)BL31_DATA_START; + int i; + + if (*data != DATA_SECTION_RESTORE_FLAG) { + *data = DATA_SECTION_RESTORE_FLAG; + for (i = 0; i < count; i++) + *(++data) = *(ptr++); + } else { + for (i = 0; i < count; i++) + *(ptr++) = *(++data); + } + #if DEBUG_CONSOLE static console_lpuart_t console; |