diff --git a/plat/nvidia/tegra/common/aarch64/tegra_helpers.S b/plat/nvidia/tegra/common/aarch64/tegra_helpers.S index fca2f7e36..2bf9a225d 100644 --- a/plat/nvidia/tegra/common/aarch64/tegra_helpers.S +++ b/plat/nvidia/tegra/common/aarch64/tegra_helpers.S @@ -11,6 +11,7 @@ #include #include #include +#include #define MIDR_PN_CORTEX_A57 0xD07 @@ -311,6 +312,23 @@ func tegra_secure_entrypoint _align=6 #if ERRATA_TEGRA_INVALIDATE_BTB_AT_BOOT + /* -------------------------------------------------------- + * Skip the invalidate BTB workaround for Tegra210B01 SKUs. + * -------------------------------------------------------- + */ + mov x0, #TEGRA_MISC_BASE + add x0, x0, #HARDWARE_REVISION_OFFSET + ldr w1, [x0] + lsr w1, w1, #CHIP_ID_SHIFT + and w1, w1, #CHIP_ID_MASK + cmp w1, #TEGRA_CHIPID_TEGRA21 /* T210? */ + b.ne 2f + ldr w1, [x0] + lsr w1, w1, #MAJOR_VERSION_SHIFT + and w1, w1, #MAJOR_VERSION_MASK + cmp w1, #0x02 /* T210 B01? */ + b.eq 2f + /* ------------------------------------------------------- * Invalidate BTB along with I$ to remove any stale * entries from the branch predictor array. @@ -367,7 +385,7 @@ func tegra_secure_entrypoint _align=6 .rept 65 nop .endr - +2: /* -------------------------------------------------- * Do not insert instructions here * -------------------------------------------------- diff --git a/plat/nvidia/tegra/common/tegra_platform.c b/plat/nvidia/tegra/common/tegra_platform.c index adf252b53..72da12663 100644 --- a/plat/nvidia/tegra/common/tegra_platform.c +++ b/plat/nvidia/tegra/common/tegra_platform.c @@ -47,15 +47,6 @@ typedef enum tegra_platform { #define TEGRA_PRE_SI_DSIM_ASIM_LINSIM U(6) #define TEGRA_PRE_SI_VDK U(8) -/******************************************************************************* - * Tegra chip ID values - ******************************************************************************/ -typedef enum tegra_chipid { - TEGRA_CHIPID_TEGRA13 = 0x13, - TEGRA_CHIPID_TEGRA21 = 0x21, - TEGRA_CHIPID_TEGRA18 = 0x18, -} tegra_chipid_t; - /* * Read the chip ID value */ diff --git a/plat/nvidia/tegra/include/tegra_platform.h b/plat/nvidia/tegra/include/tegra_platform.h index 33223aadf..1e7ba165c 100644 --- a/plat/nvidia/tegra/include/tegra_platform.h +++ b/plat/nvidia/tegra/include/tegra_platform.h @@ -23,8 +23,17 @@ #define PRE_SI_PLATFORM_SHIFT U(0x14) #define PRE_SI_PLATFORM_MASK U(0xF) -/* +/******************************************************************************* * Tegra chip ID values + ******************************************************************************/ +#define TEGRA_CHIPID_TEGRA13 U(0x13) +#define TEGRA_CHIPID_TEGRA21 U(0x21) +#define TEGRA_CHIPID_TEGRA18 U(0x18) + +#ifndef __ASSEMBLY__ + +/* + * Tegra chip ID major/minor identifiers */ uint32_t tegra_get_chipid_major(void); uint32_t tegra_get_chipid_minor(void); @@ -49,4 +58,6 @@ bool tegra_platform_is_fpga(void); bool tegra_platform_is_unit_fpga(void); bool tegra_platform_is_virt_dev_kit(void); +#endif /* __ASSEMBLY__ */ + #endif /* TEGRA_PLATFORM_H */