diff options
author | Stefan Roese <sr@denx.de> | 2015-06-29 14:58:13 +0200 |
---|---|---|
committer | Luka Perkov <luka.perkov@sartura.hr> | 2015-07-10 14:55:50 +0200 |
commit | 4d991cb3c74f1aa7742022c37e6627401b9ac030 (patch) | |
tree | d98340626a56d34311f74f6223fcd048538ab156 /arch/arm | |
parent | 2cc1aa2e0010249fe671e38eb412d0cbefb0bf73 (diff) | |
download | u-boot-imx-4d991cb3c74f1aa7742022c37e6627401b9ac030.zip u-boot-imx-4d991cb3c74f1aa7742022c37e6627401b9ac030.tar.gz u-boot-imx-4d991cb3c74f1aa7742022c37e6627401b9ac030.tar.bz2 |
arm: mvebu: Add SATA/SCSI (AHCI) support for Armada A38x
This patch adds support for the common AHCI controller on the Marvell
Armada 38x.
Tested on the Marvell DB-88F6820-GP eval board.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Luka Perkov <luka.perkov@sartura.hr>
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/mach-mvebu/cpu.c | 55 | ||||
-rw-r--r-- | arch/arm/mach-mvebu/include/mach/soc.h | 1 |
2 files changed, 56 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/cpu.c b/arch/arm/mach-mvebu/cpu.c index 531d0fb..9bc9f00 100644 --- a/arch/arm/mach-mvebu/cpu.c +++ b/arch/arm/mach-mvebu/cpu.c @@ -6,6 +6,8 @@ #include <common.h> #include <netdev.h> +#include <ahci.h> +#include <linux/mbus.h> #include <asm/io.h> #include <asm/pl310.h> #include <asm/arch/cpu.h> @@ -256,6 +258,59 @@ int board_mmc_init(bd_t *bis) } #endif +#ifdef CONFIG_SCSI_AHCI_PLAT +#define AHCI_VENDOR_SPECIFIC_0_ADDR 0xa0 +#define AHCI_VENDOR_SPECIFIC_0_DATA 0xa4 + +#define AHCI_WINDOW_CTRL(win) (0x60 + ((win) << 4)) +#define AHCI_WINDOW_BASE(win) (0x64 + ((win) << 4)) +#define AHCI_WINDOW_SIZE(win) (0x68 + ((win) << 4)) + +static void ahci_mvebu_mbus_config(void __iomem *base) +{ + const struct mbus_dram_target_info *dram; + int i; + + dram = mvebu_mbus_dram_info(); + + for (i = 0; i < 4; i++) { + writel(0, base + AHCI_WINDOW_CTRL(i)); + writel(0, base + AHCI_WINDOW_BASE(i)); + writel(0, base + AHCI_WINDOW_SIZE(i)); + } + + for (i = 0; i < dram->num_cs; i++) { + const struct mbus_dram_window *cs = dram->cs + i; + + writel((cs->mbus_attr << 8) | + (dram->mbus_dram_target_id << 4) | 1, + base + AHCI_WINDOW_CTRL(i)); + writel(cs->base >> 16, base + AHCI_WINDOW_BASE(i)); + writel(((cs->size - 1) & 0xffff0000), + base + AHCI_WINDOW_SIZE(i)); + } +} + +static void ahci_mvebu_regret_option(void __iomem *base) +{ + /* + * Enable the regret bit to allow the SATA unit to regret a + * request that didn't receive an acknowlegde and avoid a + * deadlock + */ + writel(0x4, base + AHCI_VENDOR_SPECIFIC_0_ADDR); + writel(0x80, base + AHCI_VENDOR_SPECIFIC_0_DATA); +} + +void scsi_init(void) +{ + printf("MVEBU SATA INIT\n"); + ahci_mvebu_mbus_config((void __iomem *)MVEBU_SATA0_BASE); + ahci_mvebu_regret_option((void __iomem *)MVEBU_SATA0_BASE); + ahci_init((void __iomem *)MVEBU_SATA0_BASE); +} +#endif + #ifndef CONFIG_SYS_DCACHE_OFF void enable_caches(void) { diff --git a/arch/arm/mach-mvebu/include/mach/soc.h b/arch/arm/mach-mvebu/include/mach/soc.h index 1aeec27..e6bfbc2 100644 --- a/arch/arm/mach-mvebu/include/mach/soc.h +++ b/arch/arm/mach-mvebu/include/mach/soc.h @@ -51,6 +51,7 @@ #define MVEBU_REG_PCIE_BASE (MVEBU_REGISTER(0x40000)) #define MVEBU_EGIGA0_BASE (MVEBU_REGISTER(0x70000)) #define MVEBU_EGIGA1_BASE (MVEBU_REGISTER(0x74000)) +#define MVEBU_SATA0_BASE (MVEBU_REGISTER(0xa8000)) #define MVEBU_SDIO_BASE (MVEBU_REGISTER(0xd8000)) #define SDRAM_MAX_CS 4 |