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From a5dc9fb9b33aa732858dc574f1ada22bc4cbd57c Mon Sep 17 00:00:00 2001
From: Vikram Bodireddy <vikram.bodireddy@intel.com>
Date: Thu, 5 Sep 2019 15:03:21 +0530
Subject: [PATCH] PFR platform - EXTRST# reset mask selection
This is a fix taken from Purely PFR.
This commit will enable specific reset mask for EXTRST# signal.
On PFR platforms, EXTRST# signal is used by PFR CPLD to put BMC
in reset during firmware authentications, recovery and firmware
update flow, during which certain modules of BMC should be chosen
to be reset so that Host functionality would be intact.
Signed-off-by: Vikram Bodireddy <vikram.bodireddy@intel.com>
---
arch/arm/include/asm/arch-aspeed/ast-g5-intel.h | 31 +++++++++++++++++++++++++
arch/arm/include/asm/arch-aspeed/regs-scu.h | 29 +++++++++++++++++++++++
board/aspeed/ast-g5/ast-g5-intel.c | 9 +++++++
3 files changed, 69 insertions(+)
diff --git a/arch/arm/include/asm/arch-aspeed/ast-g5-intel.h b/arch/arm/include/asm/arch-aspeed/ast-g5-intel.h
index 64f4ed1..b9386b2 100644
--- a/arch/arm/include/asm/arch-aspeed/ast-g5-intel.h
+++ b/arch/arm/include/asm/arch-aspeed/ast-g5-intel.h
@@ -12,6 +12,37 @@
#define AST_G5_INTEL 1
+/* EXTRST# mask for PFR platform
+ * EXTRST# is used by PFR CPLD to keep BMC in
+ * reset during firmware authentication, updates and recovery
+ * this mask selects the modules to be reset along with BMC so that
+ * Host functions are intact.
+ * (this is fix from Purley PFR )
+ */
+#define AST_WDT_RESET_MASK ( \
+ WDT_RESET_MASK_SPI | \
+ WDT_RESET_MASK_XDMA | \
+ WDT_RESET_MASK_MCTP | \
+ WDT_RESET_MASK_ADC | \
+ WDT_RESET_MASK_JTAG | \
+ WDT_RESET_MASK_PECI | \
+ WDT_RESET_MASK_CRT | \
+ WDT_RESET_MASK_MIC | \
+ WDT_RESET_MASK_SDIO | \
+ WDT_RESET_MASK_HAC | \
+ WDT_RESET_MASK_VIDEO | \
+ WDT_RESET_MASK_HID11 | \
+ WDT_RESET_MASK_USB11 | \
+ WDT_RESET_MASK_USB20 | \
+ WDT_RESET_MASK_GRAPHICS | \
+ WDT_RESET_MASK_MAC2 | \
+ WDT_RESET_MASK_MAC1 | \
+ WDT_RESET_MASK_I2C | \
+ WDT_RESET_MASK_AHB | \
+ WDT_RESET_MASK_COPROC | \
+ WDT_RESET_MASK_ARM | \
+ 0)
+
#ifndef __ASSEMBLY__
int intel_force_firmware_jumper_enabled(void);
int intel_failed_boot(void);
diff --git a/arch/arm/include/asm/arch-aspeed/regs-scu.h b/arch/arm/include/asm/arch-aspeed/regs-scu.h
index 1bdb1d8..0a4fb6f 100644
--- a/arch/arm/include/asm/arch-aspeed/regs-scu.h
+++ b/arch/arm/include/asm/arch-aspeed/regs-scu.h
@@ -144,6 +144,35 @@
#define SCU_RESET_AHB (0x1 << 1)
#define SCU_RESET_SRAM_CTRL (0x1 << 0)
+/* AST_WDT/EXTRST - 0x9C selection masks */
+#define WDT_RESET_MASK_MISC (1 << 25) /* Misc. SOC controller (WDT, RTC, Timer, UART, SRAM.) */
+#define WDT_RESET_MASK_SPI (1 << 24) /* SPI controller */
+#define WDT_RESET_MASK_XDMA (1 << 23) /* X-DMA controller */
+#define WDT_RESET_MASK_MCTP (1 << 22) /* MCTP controller */
+#define WDT_RESET_MASK_GPIO (1 << 21) /* GPIO controller */
+#define WDT_RESET_MASK_ADC (1 << 20) /* ADC controller */
+#define WDT_RESET_MASK_JTAG (1 << 19) /* JTAG master controller */
+#define WDT_RESET_MASK_PECI (1 << 18) /* PECI controller */
+#define WDT_RESET_MASK_PWM (1 << 17) /* PWM controller */
+#define WDT_RESET_MASK_CRT (1 << 16) /* CRT mode 2D engine */
+#define WDT_RESET_MASK_MIC (1 << 15) /* MIC controller */
+#define WDT_RESET_MASK_SDIO (1 << 14) /* SD/SDIO controller */
+#define WDT_RESET_MASK_LPC (1 << 13) /* LPC controller */
+#define WDT_RESET_MASK_HAC (1 << 12) /* HAC engine */
+#define WDT_RESET_MASK_VIDEO (1 << 11) /* Video engine */
+#define WDT_RESET_MASK_HID11 (1 << 10) /* USB1.1 HID/USB2.0 Host EHCI2 controller */
+#define WDT_RESET_MASK_USB11 (1 << 9) /* USB1.1 Host controller */
+#define WDT_RESET_MASK_USB20 (1 << 8) /* USB2.0 Host/Hub controller */
+#define WDT_RESET_MASK_GRAPHICS (1 << 7) /* Graphics CRT controller */
+#define WDT_RESET_MASK_MAC2 (1 << 6) /* MAC#2 controller */
+#define WDT_RESET_MASK_MAC1 (1 << 5) /* MAC#1 controller */
+#define WDT_RESET_MASK_I2C (1 << 4) /* I2C controller */
+#define WDT_RESET_MASK_AHB (1 << 3) /* AHB bridges */
+#define WDT_RESET_MASK_SDRAM (1 << 2) /* SDRAM controller */
+#define WDT_RESET_MASK_COPROC (1 << 1) /* Coprocessor */
+#define WDT_RESET_MASK_ARM (1 << 0) /* ARM */
+#define WDT_RESET_MASK_ALL 0x03ffffff /* all the bits above: 0-25*/
+
/* AST_SCU_RESET2 0xD4 - Reset Control register set 2 */
#define SCU_RESET_CRT3 (0x1 << 8)
#define SCU_RESET_CRT2 (0x1 << 7)
diff --git a/board/aspeed/ast-g5/ast-g5-intel.c b/board/aspeed/ast-g5/ast-g5-intel.c
index 06c6708..e6dd2e6 100644
--- a/board/aspeed/ast-g5/ast-g5-intel.c
+++ b/board/aspeed/ast-g5/ast-g5-intel.c
@@ -661,6 +661,15 @@ extern void espi_init(void);
extern void kcs_init(void);
void ast_g5_intel(void)
{
+ /* EXTRST# mask for PFR platform
+ * EXTRST# is used by PFR CPLD to keep BMC in
+ * reset during firmware authentication, updates and recovery
+ * this mask selects the modules to be reset along with BMC so that
+ * Host functions are intact.
+ * (this is fix from Purley PFR )
+ */
+ ast_scu_write(AST_WDT_RESET_MASK, AST_SCU_WDT_RESET);
+
/* Disable uart port debug function */
ast_scu_write(ast_scu_read(AST_SCU_MISC1_CTRL) |
SCU_MISC_UART_DEBUG_DIS, AST_SCU_MISC1_CTRL);
--
2.7.4
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