From ddf356e738ab147775bf49a3a4fae179c0dde9ef 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 | 26 +++++++++++++++++++++++--- 1 file changed, 23 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-aspeed/ast2600/platform.S b/arch/arm/mach-aspeed/ast2600/platform.S index d107ed80a835..eb3cb2f38cb6 100644 --- a/arch/arm/mach-aspeed/ast2600/platform.S +++ b/arch/arm/mach-aspeed/ast2600/platform.S @@ -45,7 +45,9 @@ #define AST_SCU_HPLL_PARAM_EXT (AST_SCU_BASE + 0x204) #define AST_SCU_MFP_CTRL15 (AST_SCU_BASE + 0x454) #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_CA7_CTRL (AST_SCU_BASE + 0x800) #define AST_SCU_CA7_AXI_PREFETCH_START (AST_SCU_BASE + 0x808) #define AST_SCU_CA7_AXI_PREFETCH_END (AST_SCU_BASE + 0x80C) @@ -146,6 +148,26 @@ 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] @@ -241,19 +263,17 @@ wait_lock: ldr r1, =AST_FMC_CE0_CTRL str r0, [r1] -#if 0 /* disable UART-based SoC Debug Interface UART5 and P2A bridge*/ ldr r0, =AST_SCU_DEBUG_CTRL ldr r1, [r0] orr r1, #0x03 str r1, [r0] - + /* disable UART-based SoC Debug Interface UART1 and LPC2AHB bridge */ ldr r0, =AST_SCU_DEBUG_CTRL2 ldr r1, [r0] orr r1, #0x0A str r1, [r0] -#endif /* Strongest LADESPID Driving Strngth */ ldr r0, =AST_SCU_MFP_CTRL15 -- 2.7.4