diff options
Diffstat (limited to 'meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0006-Add-Aspeed-g5-interrupt-support.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0006-Add-Aspeed-g5-interrupt-support.patch | 387 |
1 files changed, 387 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0006-Add-Aspeed-g5-interrupt-support.patch b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0006-Add-Aspeed-g5-interrupt-support.patch new file mode 100644 index 000000000..a659a3011 --- /dev/null +++ b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0006-Add-Aspeed-g5-interrupt-support.patch @@ -0,0 +1,387 @@ +From ad92c1981f81fe28b901894db537a0c98d5956e5 Mon Sep 17 00:00:00 2001 +From: Vernon Mauery <vernon.mauery@linux.intel.com> +Date: Wed, 14 Nov 2018 10:21:40 -0800 +Subject: [PATCH] Add Aspeed g5 interrupt support + +This adds a few new files to the board g5 directory. Several Intel +features require interrupts running in U-Boot, so this adds basic +interrupt registration and handling support. + +Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com> +Change-Id: Id7072f1408dcf364968b1b74f2192e50a22a82f0 + +--- + Kconfig | 13 ++ + arch/arm/lib/interrupts.c | 11 ++ + board/aspeed/ast-g5/Makefile | 3 +- + board/aspeed/ast-g5/ast-g5-irq.c | 176 ++++++++++++++++++++++++++++ + board/aspeed/ast-g5/ast-g5-irq.h | 39 ++++++ + board/aspeed/ast-g5/ast-g5.c | 3 + + board/aspeed/ast-g5/ast-g5.h | 7 ++ + cmd/Kconfig | 5 + + configs/ast_g5_ncsi_2boot_defconfig | 1 + + configs/ast_g5_ncsi_defconfig | 1 + + configs/ast_g5_phy_defconfig | 1 + + 11 files changed, 259 insertions(+), 1 deletion(-) + create mode 100644 board/aspeed/ast-g5/ast-g5-irq.c + create mode 100644 board/aspeed/ast-g5/ast-g5-irq.h + create mode 100644 board/aspeed/ast-g5/ast-g5.h + +diff --git a/Kconfig b/Kconfig +index 3ceff25032..d6439d01ca 100644 +--- a/Kconfig ++++ b/Kconfig +@@ -115,6 +115,19 @@ if EXPERT + When disabling this, please check if malloc calls, maybe + should be replaced by calloc - if one expects zeroed memory. + endif ++ ++config USE_IRQ ++ bool "Use interrupts" ++ default n ++ ++config STACKSIZE_IRQ ++ int "Size for IRQ stack (only if USE_IRQ enabled)" ++ default 16384 ++ ++config STACKSIZE_FIQ ++ int "Size for FIQ stack (only if USE_IRQ enabled)" ++ default 16384 ++ + endmenu # General setup + + menu "Boot images" +diff --git a/arch/arm/lib/interrupts.c b/arch/arm/lib/interrupts.c +index ed83043abb..a96b3aa070 100644 +--- a/arch/arm/lib/interrupts.c ++++ b/arch/arm/lib/interrupts.c +@@ -94,6 +94,17 @@ int disable_interrupts (void) + : "memory"); + return (old & 0x80) == 0; + } ++ ++int global_interrupts_enabled(void) ++{ ++ unsigned long old; ++ __asm__ __volatile__("mrs %0, cpsr\n" ++ : "=r" (old) ++ : ++ : "memory"); ++ return (old & 0x80) == 0; ++} ++ + #else + int interrupt_init (void) + { +diff --git a/board/aspeed/ast-g5/Makefile b/board/aspeed/ast-g5/Makefile +index d1d7f8525e..df4e63966e 100644 +--- a/board/aspeed/ast-g5/Makefile ++++ b/board/aspeed/ast-g5/Makefile +@@ -1 +1,2 @@ +-obj-y = ast-g5.o ++obj-y += ast-g5.o ++obj-y += ast-g5-irq.o +diff --git a/board/aspeed/ast-g5/ast-g5-irq.c b/board/aspeed/ast-g5/ast-g5-irq.c +new file mode 100644 +index 0000000000..860f16cf05 +--- /dev/null ++++ b/board/aspeed/ast-g5/ast-g5-irq.c +@@ -0,0 +1,176 @@ ++/* ++ * Copyright 2018 Intel Corporation ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++#include <common.h> ++#include <netdev.h> ++ ++#include <asm/arch/ast_scu.h> ++#include <asm/arch/ast-sdmc.h> ++#include <asm/io.h> ++ ++#include "ast-g5.h" ++#include "ast-g5-irq.h" ++ ++DECLARE_GLOBAL_DATA_PTR; ++ ++#ifdef CONFIG_USE_IRQ ++ ++#define VIC_STATUS_L 0x80 ++#define VIC_STATUS_H 0x84 ++#define VIC_IRQ_SELECTION_L 0x98 ++#define VIC_IRQ_SELECTION_H 0x9C ++#define VIC_ENABLE_L 0xA0 ++#define VIC_ENABLE_H 0xA4 ++#define VIC_ENABLE_CLEAR_L 0xA8 ++#define VIC_ENABLE_CLEAR_H 0xAC ++#define VIC_INTERRUPT_CLEAR_L 0xD8 ++#define VIC_INTERRUPT_CLEAR_H 0xDC ++ ++#define VIC_CLEAR_ALL (~0) ++ ++int arch_interrupt_init_early(void) ++{ ++ writel(VIC_CLEAR_ALL, AST_VIC_BASE + VIC_ENABLE_CLEAR_L); ++ writel(VIC_CLEAR_ALL, AST_VIC_BASE + VIC_ENABLE_CLEAR_H); ++ return 0; ++} ++int arch_interrupt_init(void) ++{ ++ return 0; ++} ++ ++#define AST_IRQ_START_L 0 ++#define AST_IRQ_END_L 31 ++#define AST_IRQ_START_H 32 ++#define AST_IRQ_END_H 63 ++#define AST_IRQ_COUNT 64 ++static interrupt_handler_t *handlers[AST_IRQ_COUNT] = {NULL}; ++static unsigned long irq_total = 0; ++static unsigned long irq_counts[AST_IRQ_COUNT] = {0}; ++ ++int request_irq(int irq, interrupt_handler_t *handler) ++{ ++ if (irq < AST_IRQ_START_L || irq > AST_IRQ_END_H) { ++ printf("irq %d out of range\n", irq); ++ return -1; ++ } ++ if (handlers[irq]) { ++ printf("irq %d already in use (%p)\n", irq, handlers[irq]); ++ return -1; ++ } ++ handlers[irq] = handler; ++ if (irq < AST_IRQ_START_H) { ++ writel((1 << irq), AST_VIC_BASE + VIC_ENABLE_L); ++ } else { ++ writel((1 << (irq - AST_IRQ_START_H)), ++ AST_VIC_BASE + VIC_ENABLE_H); ++ } ++ return 0; ++} ++ ++int release_irq(int irq) ++{ ++ if (irq < AST_IRQ_START_L || irq > AST_IRQ_END_H) { ++ return -1; ++ } ++ if (handlers[irq]) { ++ handlers[irq] = NULL; ++ if (irq < AST_IRQ_START_H) { ++ writel((1 << irq), AST_VIC_BASE + VIC_ENABLE_CLEAR_L); ++ } else { ++ writel((1 << (irq - AST_IRQ_START_H)), ++ AST_VIC_BASE + VIC_ENABLE_CLEAR_H); ++ } ++ } ++ return 0; ++} ++ ++extern int global_interrupts_enabled(void); ++int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) ++{ ++ int i; ++ int enabled = global_interrupts_enabled(); ++ unsigned long long irqs_enabled = ++ ((unsigned long long)readl(AST_VIC_BASE + VIC_ENABLE_H)) ++ << AST_IRQ_START_H ++ | readl(AST_VIC_BASE + VIC_ENABLE_L); ++ printf("interrupts %sabled\n", (enabled ? "en" : "dis")); ++ for (i = AST_IRQ_START_L; i < AST_IRQ_COUNT; i++) { ++ printf("% 2i (% 3s): %lu\n", i, ++ ((irqs_enabled & 1) ? "on" : "off"), irq_counts[i]); ++ irqs_enabled >>= 1; ++ } ++ printf("total: %lu\n", irq_total); ++ return 0; ++} ++ ++void do_irq(struct pt_regs *pt_regs) ++{ ++ uint32_t irq = readl(AST_VIC_BASE + VIC_STATUS_L); ++ int i; ++ irq_total++; ++ if (irq) { ++ // handler irq0-31 ++ for (i = AST_IRQ_START_L; i <= AST_IRQ_END_L; i++) { ++ if (irq & (1 << i)) { ++ irq_counts[i]++; ++ /* mask */ ++ writel((1 << i), ++ AST_VIC_BASE + VIC_ENABLE_CLEAR_L); ++ if (handlers[i]) { ++ handlers[i](pt_regs); ++ /* clear */ ++ writel((1 << i), ++ AST_VIC_BASE ++ + VIC_INTERRUPT_CLEAR_L); ++ /* unmask */ ++ writel((1 << i), ++ AST_VIC_BASE + VIC_ENABLE_L); ++ } else { ++ printf("unexpected interrupt %i; masking\n", ++ i); ++ /* clear; do not unmask */ ++ writel((1 << i), ++ AST_VIC_BASE ++ + VIC_INTERRUPT_CLEAR_L); ++ } ++ } ++ } ++ } ++ irq = readl(AST_VIC_BASE + VIC_STATUS_H); ++ if (irq) { ++ // handler irq32-63 ++ for (i = AST_IRQ_START_H; i <= AST_IRQ_END_H; i++) { ++ if (irq & (1 << (i - AST_IRQ_START_H))) { ++ irq_counts[i]++; ++ /* mask */ ++ writel((1 << (i - AST_IRQ_START_H)), ++ AST_VIC_BASE + VIC_ENABLE_CLEAR_H); ++ if (handlers[i]) { ++ handlers[i](pt_regs); ++ /* clear */ ++ writel((1 << (i - AST_IRQ_START_H)), ++ AST_VIC_BASE ++ + VIC_INTERRUPT_CLEAR_H); ++ /* unmask */ ++ writel((1 << (i - AST_IRQ_START_H)), ++ AST_VIC_BASE + VIC_ENABLE_H); ++ } else { ++ printf("unexpected interrupt %i; masking\n", ++ i); ++ /* clear; do not unmask */ ++ writel((1 << (i - AST_IRQ_START_H)), ++ AST_VIC_BASE ++ + VIC_INTERRUPT_CLEAR_H); ++ } ++ } ++ } ++ } ++} ++#endif +diff --git a/board/aspeed/ast-g5/ast-g5-irq.h b/board/aspeed/ast-g5/ast-g5-irq.h +new file mode 100644 +index 0000000000..703eeabf13 +--- /dev/null ++++ b/board/aspeed/ast-g5/ast-g5-irq.h +@@ -0,0 +1,39 @@ ++/* ++ * Copyright 2018 Intel Corporation ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version ++ * 2 of the License, or (at your option) any later version. ++ */ ++ ++#ifndef __AST_G5_IRQ_H__ ++#define __AST_G5_IRQ_H__ ++ ++#include <common.h> ++ ++#ifdef CONFIG_USE_IRQ ++ ++int arch_interrupt_init_early(void); ++ ++int request_irq(int irq, interrupt_handler_t *handler); ++ ++int release_irq(int irq); ++ ++#else /* CONFIG_USE_IRQ */ ++ ++int arch_interrupt_init_early(void) { ++ return 0; ++} ++ ++int request_irq(int irq, interrupt_handler_t *handler) { ++ return -1; ++} ++ ++int release_irq(int irq) { ++ return -1; ++} ++ ++#endif /* CONFIG_USE_IRQ */ ++ ++#endif /* __AST_G5_IRQ_H__ */ +diff --git a/board/aspeed/ast-g5/ast-g5.c b/board/aspeed/ast-g5/ast-g5.c +index 02eb2c3990..ca25348178 100644 +--- a/board/aspeed/ast-g5/ast-g5.c ++++ b/board/aspeed/ast-g5/ast-g5.c +@@ -17,6 +17,8 @@ + #include <asm/arch/regs-sdmc.h> + #include <asm/io.h> + ++#include "ast-g5.h" ++ + DECLARE_GLOBAL_DATA_PTR; + + int board_early_init_f(void) +@@ -25,6 +27,7 @@ int board_early_init_f(void) + ast_config_uart5_clk(); + /*enable pass through*/ + ast_enable_pass_through(); ++ arch_interrupt_init_early(); + + return 0; + } +diff --git a/board/aspeed/ast-g5/ast-g5.h b/board/aspeed/ast-g5/ast-g5.h +new file mode 100644 +index 0000000000..9fd10eccb3 +--- /dev/null ++++ b/board/aspeed/ast-g5/ast-g5.h +@@ -0,0 +1,7 @@ ++#ifndef _AST_G5_H_ ++#define _AST_G5_H_ ++ ++#include <common.h> ++#include "ast-g5-irq.h" ++ ++#endif /* _AST_G5_H_ */ +diff --git a/cmd/Kconfig b/cmd/Kconfig +index d69b817c82..33be2407d2 100644 +--- a/cmd/Kconfig ++++ b/cmd/Kconfig +@@ -313,6 +313,11 @@ endmenu + + menu "Device access commands" + ++config CMD_IRQ ++ bool "interrupts - enable/disable interrupts" ++ depends on USE_IRQ ++ default y ++ + config CMD_DM + bool "dm - Access to driver model information" + depends on DM +diff --git a/configs/ast_g5_ncsi_2boot_defconfig b/configs/ast_g5_ncsi_2boot_defconfig +index 2d28c86966..d5b7894a9e 100644 +--- a/configs/ast_g5_ncsi_2boot_defconfig ++++ b/configs/ast_g5_ncsi_2boot_defconfig +@@ -33,3 +33,4 @@ CONFIG_CMD_CRC32=y + CONFIG_LOOPW=y + CONFIG_CMD_MEMTEST=y + CONFIG_CMD_MX_CYCLIC=y ++CONFIG_USE_IRQ=y +diff --git a/configs/ast_g5_ncsi_defconfig b/configs/ast_g5_ncsi_defconfig +index 74029ed514..9481e5fb6e 100644 +--- a/configs/ast_g5_ncsi_defconfig ++++ b/configs/ast_g5_ncsi_defconfig +@@ -11,3 +11,4 @@ CONFIG_HUSH_PARSER=y + CONFIG_OF_LIBFDT=y + CONFIG_SPI_FLASH=y + CONFIG_SYS_NS16550=y ++CONFIG_USE_IRQ=y +diff --git a/configs/ast_g5_phy_defconfig b/configs/ast_g5_phy_defconfig +index 767f3af605..4aefcf49e8 100644 +--- a/configs/ast_g5_phy_defconfig ++++ b/configs/ast_g5_phy_defconfig +@@ -12,3 +12,4 @@ CONFIG_HUSH_PARSER=y + CONFIG_OF_LIBFDT=y + CONFIG_SPI_FLASH=y + CONFIG_SYS_NS16550=y ++CONFIG_USE_IRQ=y |