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From 844e425a503c56bd84dbfe5396c5f8f9b4284e6d Mon Sep 17 00:00:00 2001
From: Jae Hyun Yoo <jae.hyun.yoo@intel.com>
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 <jae.hyun.yoo@intel.com>
---
arch/arm/mach-aspeed/ast2600/platform.S | 24 ++++++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-aspeed/ast2600/platform.S b/arch/arm/mach-aspeed/ast2600/platform.S
index f96ef1f0dac4..3b6f91a60c3d 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_CA7_PARITY_CHK (AST_SCU_BASE + 0x820)
#define AST_SCU_CA7_PARITY_CLR (AST_SCU_BASE + 0x824)
#define AST_SCU_MMIO_DEC_SET (AST_SCU_BASE + 0xC24)
@@ -175,6 +177,26 @@ 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]
@@ -277,7 +299,6 @@ skip_fill_wip_bit:
ldr r1, =AST_FMC_WDT1_CTRL_MODE
str r0, [r1]
-#if 0
/* disable UART-based SoC Debug Interface UART5 and P2A bridge*/
ldr r0, =AST_SCU_DEBUG_CTRL
ldr r1, [r0]
@@ -289,7 +310,6 @@ skip_fill_wip_bit:
ldr r1, [r0]
orr r1, #0x0A
str r1, [r0]
-#endif
/* relocate mailbox insn. for cpuN polling SMP go signal */
adrl r0, mailbox_insn
--
2.17.1
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