From a65e65939eaee611c86c96bee4556f552f5b42a3 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Pali=20Roh=C3=A1r?= Date: Wed, 19 Aug 2020 16:24:17 +0200 Subject: [PATCH] arm: mvebu: Espressobin: Setup MTD partitions when booting kernel MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Due to different partition layouts in different U-Boot versions, DTS for Espressobin in Linux does not contain any definition of MTD partitions. See commit https://git.kernel.org/stable/c/00954566464a4 for more details. This patch via ft_board_setup() hook fills current partition layout used by U-Boot, so booted kernel would see correct MTD partitions layout. U-Boot env partition is calculated from CONFIG_ENV_OFFSET option. First partition contains secure firmware, ARM trusted firmware and U-Boot with checksums. So it is not possible to replace just one image (e.g. U-Boot) without updating other parts where is stored checksum of U-Boot. Therefore there is no extra partition defined for U-Boot and first partition is called just 'firmware'. Signed-off-by: Pali Rohár Reviewed-by: Konstantin Porotchkin Tested-by: Andre Heider --- board/Marvell/mvebu_armada-37xx/board.c | 100 ++++++++++++++++++++++++++++ configs/mvebu_espressobin-88f3720_defconfig | 1 + 2 files changed, 101 insertions(+) diff --git a/board/Marvell/mvebu_armada-37xx/board.c b/board/Marvell/mvebu_armada-37xx/board.c index 031de31..7b9c322 100644 --- a/board/Marvell/mvebu_armada-37xx/board.c +++ b/board/Marvell/mvebu_armada-37xx/board.c @@ -243,3 +243,103 @@ int board_network_enable(struct mii_dev *bus) return 0; } + +#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_ENV_IS_IN_SPI_FLASH) +int ft_board_setup(void *blob, struct bd_info *bd) +{ + int ret; + int spi_off; + int parts_off; + int part_off; + + /* Fill SPI MTD partitions for Linux kernel on Espressobin */ + if (!of_machine_is_compatible("marvell,armada-3720-espressobin")) + return 0; + + spi_off = fdt_node_offset_by_compatible(blob, -1, "jedec,spi-nor"); + if (spi_off < 0) + return 0; + + /* Do not touch partitions if they are already defined */ + if (fdt_subnode_offset(blob, spi_off, "partitions") >= 0) + return 0; + + parts_off = fdt_add_subnode(blob, spi_off, "partitions"); + if (parts_off < 0) { + printf("Can't add partitions node: %s\n", fdt_strerror(parts_off)); + return 0; + } + + ret = fdt_setprop_string(blob, parts_off, "compatible", "fixed-partitions"); + if (ret < 0) { + printf("Can't set compatible property: %s\n", fdt_strerror(ret)); + return 0; + } + + ret = fdt_setprop_u32(blob, parts_off, "#address-cells", 1); + if (ret < 0) { + printf("Can't set #address-cells property: %s\n", fdt_strerror(ret)); + return 0; + } + + ret = fdt_setprop_u32(blob, parts_off, "#size-cells", 1); + if (ret < 0) { + printf("Can't set #size-cells property: %s\n", fdt_strerror(ret)); + return 0; + } + + /* Add u-boot-env partition */ + + part_off = fdt_add_subnode(blob, parts_off, "partition@u-boot-env"); + if (part_off < 0) { + printf("Can't add partition@u-boot-env node: %s\n", fdt_strerror(part_off)); + return 0; + } + + ret = fdt_setprop_u32(blob, part_off, "reg", CONFIG_ENV_OFFSET); + if (ret < 0) { + printf("Can't set partition@u-boot-env reg property: %s\n", fdt_strerror(ret)); + return 0; + } + + ret = fdt_appendprop_u32(blob, part_off, "reg", CONFIG_ENV_SIZE); + if (ret < 0) { + printf("Can't set partition@u-boot-env reg property: %s\n", fdt_strerror(ret)); + return 0; + } + + ret = fdt_setprop_string(blob, part_off, "label", "u-boot-env"); + if (ret < 0) { + printf("Can't set partition@u-boot-env label property: %s\n", fdt_strerror(ret)); + return 0; + } + + /* Add firmware partition */ + + part_off = fdt_add_subnode(blob, parts_off, "partition@firmware"); + if (part_off < 0) { + printf("Can't add partition@firmware node: %s\n", fdt_strerror(part_off)); + return 0; + } + + ret = fdt_setprop_u32(blob, part_off, "reg", 0); + if (ret < 0) { + printf("Can't set partition@firmware reg property: %s\n", fdt_strerror(ret)); + return 0; + } + + ret = fdt_appendprop_u32(blob, part_off, "reg", CONFIG_ENV_OFFSET); + if (ret < 0) { + printf("Can't set partition@firmware reg property: %s\n", fdt_strerror(ret)); + return 0; + } + + ret = fdt_setprop_string(blob, part_off, "label", "firmware"); + if (ret < 0) { + printf("Can't set partition@firmware label property: %s\n", fdt_strerror(ret)); + return 0; + } + + return 0; +} +#endif diff --git a/configs/mvebu_espressobin-88f3720_defconfig b/configs/mvebu_espressobin-88f3720_defconfig index afcdd94..0c1c92d 100644 --- a/configs/mvebu_espressobin-88f3720_defconfig +++ b/configs/mvebu_espressobin-88f3720_defconfig @@ -82,3 +82,4 @@ CONFIG_SHA1=y CONFIG_SHA256=y CONFIG_MVNETA=y CONFIG_DM_REGULATOR_GPIO=y +CONFIG_OF_BOARD_SETUP=y -- 2.7.4