diff options
Diffstat (limited to 'plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c')
| -rw-r--r-- | plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c b/plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c index eadf8811..ea60466f 100644 --- a/plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c +++ b/plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c @@ -27,6 +27,7 @@ static const mmap_region_t imx_mmap[] = { MAP_REGION_FLAT(GPV_BASE, GPV_SIZE, MT_DEVICE | MT_RW), /* GPV map */ + MAP_REGION_FLAT(IMX_ROM_BASE, IMX_ROM_SIZE, MT_MEMORY | MT_RO), /* ROM map */ MAP_REGION_FLAT(IMX_AIPS_BASE, IMX_AIPS_SIZE, MT_DEVICE | MT_RW), /* AIPS map */ MAP_REGION_FLAT(IMX_GIC_BASE, IMX_GIC_SIZE, MT_DEVICE | MT_RW), /* GIC map */ {0}, @@ -35,6 +36,45 @@ static const mmap_region_t imx_mmap[] = { static entry_point_info_t bl32_image_ep_info; static entry_point_info_t bl33_image_ep_info; +static uint32_t imx_soc_revision; + +int imx_soc_info_handler(uint32_t smc_fid, u_register_t x1, u_register_t x2, + u_register_t x3) +{ + return imx_soc_revision; +} + +#define ANAMIX_DIGPROG 0x6c +#define ROM_SOC_INFO_A0 0x800 +#define ROM_SOC_INFO_B0 0x83C +#define OCOTP_SOC_INFO_B1 0x40 + +static void imx8mq_soc_info_init(void) +{ + uint32_t rom_version; + uint32_t ocotp_val; + + imx_soc_revision = mmio_read_32(IMX_ANAMIX_BASE + ANAMIX_DIGPROG); + rom_version = mmio_read_8(IMX_ROM_BASE + ROM_SOC_INFO_A0); + if (rom_version == 0x10) + return; + + rom_version = mmio_read_8(IMX_ROM_BASE + ROM_SOC_INFO_B0); + if (rom_version == 0x20) { + imx_soc_revision &= ~0xff; + imx_soc_revision |= rom_version; + return; + } + + /* 0xff0055aa is magic number for B1 */ + ocotp_val = mmio_read_32(IMX_OCOTP_BASE + OCOTP_SOC_INFO_B1); + if (ocotp_val == 0xff0055aa) { + imx_soc_revision &= ~0xff; + imx_soc_revision |= 0x21; + return; + } +} + /* get SPSR for BL33 entry */ static uint32_t get_spsr_for_bl33_entry(void) { @@ -128,6 +168,9 @@ void bl31_platform_setup(void) plat_gic_driver_init(); plat_gic_init(); + /* determine SOC revision for erratas */ + imx8mq_soc_info_init(); + /* gpc init */ imx_gpc_init(); } |