diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-4.4/345-MIPS-BCM63XX-fixup-mapped-SPI-flash-access-on-boot.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-4.4/345-MIPS-BCM63XX-fixup-mapped-SPI-flash-access-on-boot.patch | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/target/linux/brcm63xx/patches-4.4/345-MIPS-BCM63XX-fixup-mapped-SPI-flash-access-on-boot.patch b/target/linux/brcm63xx/patches-4.4/345-MIPS-BCM63XX-fixup-mapped-SPI-flash-access-on-boot.patch deleted file mode 100644 index c8bef13625..0000000000 --- a/target/linux/brcm63xx/patches-4.4/345-MIPS-BCM63XX-fixup-mapped-SPI-flash-access-on-boot.patch +++ /dev/null @@ -1,84 +0,0 @@ -From 1cacd0f7b0d35f8e3d3f8a69ecb3b5e436d6b9e8 Mon Sep 17 00:00:00 2001 -From: Jonas Gorski <jogo@openwrt.org> -Date: Sun, 22 Dec 2013 13:25:25 +0100 -Subject: [PATCH 52/56] MIPS: BCM63XX: fixup mapped SPI flash access on boot - -Some bootloaders leave the flash access in an invalid state with dual -read enabled; fix it by disabling it and falling back to simple fast -reads. - -Signed-off-by: Jonas Gorski <jogo@openwrt.org> ---- - arch/mips/bcm63xx/dev-flash.c | 51 ++++++++++++++++++++++++++++++++++++ - 1 file changed, 51 insertions(+) - ---- a/arch/mips/bcm63xx/dev-flash.c -+++ b/arch/mips/bcm63xx/dev-flash.c -@@ -16,6 +16,7 @@ - #include <linux/mtd/mtd.h> - #include <linux/mtd/partitions.h> - #include <linux/mtd/physmap.h> -+#include <linux/mtd/spi-nor.h> - - #include <bcm63xx_cpu.h> - #include <bcm63xx_dev_flash.h> -@@ -110,9 +111,59 @@ static int __init bcm63xx_detect_flash_t - } - } - -+#define HSSPI_FLASH_CTRL_REG 0x14 -+#define FLASH_CTRL_READ_OPCODE_MASK 0xff -+#define FLASH_CTRL_ADDR_BYTES_MASK (0x3 << 8) -+#define FLASH_CTRL_ADDR_BYTES_2 (0 << 8) -+#define FLASH_CTRL_ADDR_BYTES_3 (1 << 8) -+#define FLASH_CTRL_ADDR_BYTES_4 (2 << 8) -+#define FLASH_CTRL_DUMMY_BYTES_SHIFT 10 -+#define FLASH_CTRL_DUMMY_BYTES_MASK (0x3 << FLASH_CTRL_DUMMY_BYTES_SHIFT) -+#define FLASH_CTRL_MB_EN (1 << 23) -+ - void __init bcm63xx_flash_detect(void) - { - flash_type = bcm63xx_detect_flash_type(); -+ -+ /* ensure flash mapping has sane values */ -+ if (flash_type == BCM63XX_FLASH_TYPE_SERIAL && -+ (BCMCPU_IS_6318() || BCMCPU_IS_6328() || BCMCPU_IS_6362() || -+ BCMCPU_IS_63268())) { -+ u32 val = bcm_rset_readl(RSET_HSSPI, HSSPI_FLASH_CTRL_REG); -+ -+ if (val & FLASH_CTRL_MB_EN) { -+ /* cfe might configure non working dual-io mode */ -+ val &= ~FLASH_CTRL_MB_EN; -+ val &= ~FLASH_CTRL_READ_OPCODE_MASK; -+ val &= ~FLASH_CTRL_DUMMY_BYTES_MASK; -+ val |= 1 << FLASH_CTRL_DUMMY_BYTES_SHIFT; -+ -+ switch (val & FLASH_CTRL_ADDR_BYTES_MASK) { -+ case FLASH_CTRL_ADDR_BYTES_3: -+ val |= SPINOR_OP_READ_FAST; -+ break; -+ case FLASH_CTRL_ADDR_BYTES_4: -+ val |= SPINOR_OP_READ4_FAST; -+ break; -+ case FLASH_CTRL_ADDR_BYTES_2: -+ default: -+ pr_warn("unsupported address byte mode (%x), not fixing up\n", -+ val & FLASH_CTRL_ADDR_BYTES_MASK); -+ return; -+ } -+ } else { -+ /* ensure dummy bytes is set to 1 for _FAST reads */ -+ u8 cmd = val & FLASH_CTRL_READ_OPCODE_MASK; -+ -+ if (cmd != SPINOR_OP_READ_FAST && cmd != SPINOR_OP_READ4_FAST) -+ return; -+ -+ val &= ~FLASH_CTRL_DUMMY_BYTES_MASK; -+ val |= 1 << FLASH_CTRL_DUMMY_BYTES_SHIFT; -+ } -+ -+ bcm_rset_writel(RSET_HSSPI, val, HSSPI_FLASH_CTRL_REG); -+ } - } - - int __init bcm63xx_flash_register(void) |