From 053770be23c7826efefa9b7b087d8b285bf8bbcd Mon Sep 17 00:00:00 2001 From: Jae Hyun Yoo Date: Wed, 29 Jan 2020 14:55:44 -0800 Subject: [PATCH] ast2600: Override OTP strap settings This commit adds settings to override OTP strap. Also, this commit disables SoC debug interface. Signed-off-by: Jae Hyun Yoo --- arch/arm/mach-aspeed/ast2600/platform.S | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/arch/arm/mach-aspeed/ast2600/platform.S b/arch/arm/mach-aspeed/ast2600/platform.S index 81520b0f036e..e479d0276d39 100644 --- a/arch/arm/mach-aspeed/ast2600/platform.S +++ b/arch/arm/mach-aspeed/ast2600/platform.S @@ -44,7 +44,9 @@ #define AST_SCU_HPLL_PARAM (AST_SCU_BASE + 0x200) #define AST_SCU_HPLL_PARAM_EXT (AST_SCU_BASE + 0x204) #define AST_SCU_HW_STRAP1 (AST_SCU_BASE + 0x500) +#define AST_SCU_HW_STRAP1_CLR (AST_SCU_BASE + 0x504) #define AST_SCU_HW_STRAP2 (AST_SCU_BASE + 0x510) +#define AST_SCU_HW_STRAP2_CLR (AST_SCU_BASE + 0x514) #define AST_SCU_HW_STRAP3 (AST_SCU_BASE + 0x51C) #define AST_SCU_CA7_PARITY_CHK (AST_SCU_BASE + 0x820) #define AST_SCU_CA7_PARITY_CLR (AST_SCU_BASE + 0x824) @@ -176,6 +178,26 @@ do_primary_core_setup: /* unlock system control unit */ scu_unlock + /* disable CA7 CPU boot */ + ldr r0, =AST_SCU_HW_STRAP1_CLR + movw r1, #0x0001 @; Disable ARM CA7 CPU boot + movt r1, #0x0000 + str r1, [r0] + + /* enable eSPI, debug interface and disable UART5 boot*/ + ldr r0, =AST_SCU_HW_STRAP2_CLR + movw r1, #0x0040 @; Select eSPI + movt r1, #0x0000 + orr r1, #0x0010 @; Enable debug interface + orr r1, #0x0100 @; Disable UART5 boot + str r1, [r0] + + /* enable ACPI */ + ldr r0, =AST_SCU_HW_STRAP2 + ldr r1, [r0] + orr r1, #0x20 @; Enable ACPI + str r1, [r0] + /* identify AST2600 A0/A1 */ ldr r0, =AST_SCU_REV_ID ldr r0, [r0] -- 2.17.1