diff options
Diffstat (limited to 'meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0046-Enable-FMC-DMA-for-memmove.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0046-Enable-FMC-DMA-for-memmove.patch | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0046-Enable-FMC-DMA-for-memmove.patch b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0046-Enable-FMC-DMA-for-memmove.patch new file mode 100644 index 000000000..e75b732b1 --- /dev/null +++ b/meta-openbmc-mods/meta-ast2500/recipes-bsp/u-boot/files/0046-Enable-FMC-DMA-for-memmove.patch @@ -0,0 +1,151 @@ +From 38d3fba3ac2d4240bab1e5427fc6ed71291e1cc8 Mon Sep 17 00:00:00 2001 +From: Jae Hyun Yoo <jae.hyun.yoo@intel.com> +Date: Fri, 19 Jun 2020 16:30:47 -0700 +Subject: [PATCH] Enable FMC DMA for memmove + +This commit enables FMC DMA for memmove so that kernel loading can be +completed quickly. + +Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com> +Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@intel.com> +--- + arch/arm/mach-aspeed/Makefile | 2 +- + arch/arm/mach-aspeed/utils.S | 53 +++++++++++++++++++++++++++++++++++++++++++ + lib/Kconfig | 6 +++++ + lib/string.c | 12 +++++++++- + 4 files changed, 71 insertions(+), 2 deletions(-) + create mode 100644 arch/arm/mach-aspeed/utils.S + +diff --git a/arch/arm/mach-aspeed/Makefile b/arch/arm/mach-aspeed/Makefile +index 7d8930beb988..b9fcf41d8c97 100644 +--- a/arch/arm/mach-aspeed/Makefile ++++ b/arch/arm/mach-aspeed/Makefile +@@ -11,7 +11,7 @@ + # + + +-obj-y += timer.o reset.o cpuinfo.o ast-scu.o ast-ahbc.o ast-sdmc.o ++obj-y += timer.o reset.o cpuinfo.o ast-scu.o ast-ahbc.o ast-sdmc.o utils.o + obj-$(CONFIG_AST_SPI_NOR) += flash.o + obj-$(CONFIG_ARCH_AST2500) += platform_g5.o + obj-$(CONFIG_ARCH_AST2400) += platform_g4.o +diff --git a/arch/arm/mach-aspeed/utils.S b/arch/arm/mach-aspeed/utils.S +new file mode 100644 +index 000000000000..a06d72552eef +--- /dev/null ++++ b/arch/arm/mach-aspeed/utils.S +@@ -0,0 +1,53 @@ ++// SPDX-License-Identifier: GPL-2.0 ++/* ++ * Copyright (C) ASPEED Technology Inc. ++ * Chia-Wei Wang <chiawei_wang@aspeedtech.com> ++ */ ++ ++#include <config.h> ++#include <asm/armv7.h> ++#include <linux/linkage.h> ++ ++#define AST_FMC_BASE (0x1E620000) ++#define AST_FMC_INT_CTRL_STAT (AST_FMC_BASE + 0x008) ++#define AST_FMC_DMA_CTRL (AST_FMC_BASE + 0x080) ++#define AST_FMC_DMA_FLASH_ADDR (AST_FMC_BASE + 0x084) ++#define AST_FMC_DMA_DRAM_ADDR (AST_FMC_BASE + 0x088) ++#define AST_FMC_DMA_LENGTH (AST_FMC_BASE + 0x08C) ++ ++/* ++ * void aspeed_spi_fastcpy(u32 mem_addr, u32 spi_addr, u32 count) ++ * ++ * perform FMC SPI DMA to speed up flash copy. ++ * @dst: destination memory address ++ * @src: source SPI address ++ * @count: number of bytes to be copied, 4-byte aligned ++ * ++ * NOTE that the caller must ensure the validity of parameters. ++ */ ++ENTRY(aspeed_spi_fastcpy) ++ ldr r3, =AST_FMC_DMA_DRAM_ADDR ++ str r0, [r3] ++ ++ ldr r3, =AST_FMC_DMA_FLASH_ADDR ++ str r1, [r3] ++ ++ ldr r3, =AST_FMC_DMA_LENGTH ++ str r2, [r3] ++ ++ ldr r0, =AST_FMC_DMA_CTRL ++ mov r1, #1 ++ str r1, [r0] ++ ++ ldr r0, =AST_FMC_INT_CTRL_STAT ++polling: ++ ldr r1, [r0] ++ tst r1, #(1 << 11) ++ beq polling ++ ++ ldr r0, =AST_FMC_DMA_CTRL ++ mov r1, #0 ++ str r1, [r0] ++ ++ mov pc, lr ++ENDPROC(aspeed_spi_fastcpy) +diff --git a/lib/Kconfig b/lib/Kconfig +index 02ca4058d37e..8c8fde6b1b28 100644 +--- a/lib/Kconfig ++++ b/lib/Kconfig +@@ -149,6 +149,12 @@ config SPL_OF_LIBFDT + particular compatible nodes. The library operates on a flattened + version of the device tree. + ++config ASPEED_FMC_DMA ++ bool "Enable Aspeed SPI DMA" ++ default n ++ help ++ This enables fast memmove using FMC DMA on Aspeed SoCs. ++ + source lib/efi/Kconfig + source lib/efi_loader/Kconfig + +diff --git a/lib/string.c b/lib/string.c +index 0bf472f1f69e..f95b8e478fa6 100644 +--- a/lib/string.c ++++ b/lib/string.c +@@ -15,11 +15,12 @@ + * reentrant and should be faster). Use only strsep() in new code, please. + */ + ++#include <config.h> + #include <linux/types.h> + #include <linux/string.h> + #include <linux/ctype.h> + #include <malloc.h> +- ++#include <common.h> + + /** + * strncasecmp - Case insensitive, length-limited string comparison +@@ -497,6 +498,7 @@ void * memcpy(void *dest, const void *src, size_t count) + #endif + + #ifndef __HAVE_ARCH_MEMMOVE ++extern void aspeed_spi_fastcpy(u32 mem_addr, u32 spi_addr, u32 count); + /** + * memmove - Copy one area of memory to another + * @dest: Where to copy to +@@ -520,6 +522,14 @@ void *memmove(void *dest, const void *src, size_t count) + if (src == dest || !count) + return dest; + ++#ifdef CONFIG_ASPEED_FMC_DMA ++ if ((u32)src >= AST_FMC_CS0_BASE && (u32)src < AST_SPI0_CS0_BASE) { ++ count = ((count + 3) / 4) * 4; ++ aspeed_spi_fastcpy((u32)dest, (u32)src, (u32)count); ++ return dest; ++ } ++#endif ++ + if (unaligned_src || unaligned_dst) { + if (unaligned_dst != unaligned_src) { + unaligned_header = count; +-- +2.7.4 + |