diff options
Diffstat (limited to 'plat/ti')
| -rw-r--r-- | plat/ti/k3/common/k3_helpers.S | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/plat/ti/k3/common/k3_helpers.S b/plat/ti/k3/common/k3_helpers.S index 1ab1af54..3afca591 100644 --- a/plat/ti/k3/common/k3_helpers.S +++ b/plat/ti/k3/common/k3_helpers.S @@ -6,6 +6,8 @@ #include <arch.h> #include <asm_macros.S> +#include <cortex_a72.h> +#include <cpu_macros.S> #include <platform_def.h> #define K3_BOOT_REASON_COLD_RESET 0x1 @@ -89,6 +91,26 @@ out: ret endfunc plat_my_core_pos + /* -------------------------------------------------------------------- + * This handler does the following: + * - Set the L2 Data RAM latency to 2 (i.e. 3 cycles) for Cortex-A72 + * -------------------------------------------------------------------- + */ + .globl plat_reset_handler +func plat_reset_handler + /* Only on Cortex-A72 */ + jump_if_cpu_midr CORTEX_A72_MIDR, a72 + ret + + /* Cortex-A72 specific settings */ +a72: + mrs x0, CORTEX_A72_L2CTLR_EL1 + orr x0, x0, #(CORTEX_A72_L2_DATA_RAM_LATENCY_3_CYCLES << CORTEX_A72_L2CTLR_DATA_RAM_LATENCY_SHIFT) + msr CORTEX_A72_L2CTLR_EL1, x0 + isb + ret +endfunc plat_reset_handler + /* --------------------------------------------- * int plat_crash_console_init(void) * Function to initialize the crash console |