[U-Boot] [PATCH v2] add Armada XP SATA support

[Anton Schubert]

This patch initializes the SATA address windows on Armada XP and
allows it to work with the existing mvsata_ide driver.
It also adds the necessary configuration for the db-mv784mp-gp board.

Changes v2:
 - add second bus offset
 - only allow one device per bus
 - enable CONFIG_CMD_IDE per default

Signed-off-by: Anton Schubert <anton.schubert at gmx.de>
Cc: Stefan Roese <sr at denx.de>
Cc: Luka Perkov <luka.perkov at sartura.hr> 
---
 arch/arm/mach-mvebu/include/mach/soc.h |  1 +
 drivers/block/mvsata_ide.c             | 41 ++++++++++++++++++++++++++++++++++
 include/configs/db-mv784mp-gp.h        | 29 ++++++++++++++++++++++++
 3 files changed, 71 insertions(+)

diff --git a/arch/arm/mach-mvebu/include/mach/soc.h b/arch/arm/mach-mvebu/include/mach/soc.h
index 1aaea67..619bc7e 100644
--- a/arch/arm/mach-mvebu/include/mach/soc.h
+++ b/arch/arm/mach-mvebu/include/mach/soc.h
@@ -52,6 +52,7 @@
 #define MVEBU_USB20_BASE	(MVEBU_REGISTER(0x58000))
 #define MVEBU_EGIGA0_BASE	(MVEBU_REGISTER(0x70000))
 #define MVEBU_EGIGA1_BASE	(MVEBU_REGISTER(0x74000))
+#define MVEBU_AXP_SATA_BASE	(MVEBU_REGISTER(0xa0000))
 #define MVEBU_SATA0_BASE	(MVEBU_REGISTER(0xa8000))
 #define MVEBU_SDIO_BASE		(MVEBU_REGISTER(0xd8000))
 
diff --git a/drivers/block/mvsata_ide.c b/drivers/block/mvsata_ide.c
index e54d564..52c1602 100644
--- a/drivers/block/mvsata_ide.c
+++ b/drivers/block/mvsata_ide.c
@@ -13,6 +13,8 @@
 #include <asm/arch/orion5x.h>
 #elif defined(CONFIG_KIRKWOOD)
 #include <asm/arch/soc.h>
+#elif defined(CONFIG_ARMADA_XP)
+#include <linux/mbus.h>
 #endif
 
 /* SATA port registers */
@@ -90,6 +92,41 @@ struct mvsata_port_registers {
 #define MVSATA_STATUS_TIMEOUT	-1
 
 /*
+ * Registers for SATA MBUS memory windows
+ */
+
+#define MVSATA_WIN_CONTROL(w)	(MVEBU_AXP_SATA_BASE + 0x30 + ((w) << 4))
+#define MVSATA_WIN_BASE(w)	(MVEBU_AXP_SATA_BASE + 0x34 + ((w) << 4))
+
+/*
+ * Initialize SATA memory windows for Armada XP
+ */
+
+#ifdef CONFIG_ARMADA_XP
+static void mvsata_ide_conf_mbus_windows(void)
+{
+	const struct mbus_dram_target_info *dram;
+	int i;
+
+	dram = mvebu_mbus_dram_info();
+
+	/* Disable windows, Set Size/Base to 0  */
+	for (i = 0; i < 4; i++) {
+		writel(0, MVSATA_WIN_CONTROL(i));
+		writel(0, MVSATA_WIN_BASE(i));
+	}
+
+	for (i = 0; i < dram->num_cs; i++) {
+		const struct mbus_dram_window *cs = dram->cs + i;
+		writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) |
+				(dram->mbus_dram_target_id << 4) | 1,
+				MVSATA_WIN_CONTROL(i));
+		writel(cs->base & 0xffff0000, MVSATA_WIN_BASE(i));
+	}
+}
+#endif
+
+/*
  * Initialize one MVSATAHC port: set SControl's IPM to "always active"
  * and DET to "reset", then wait for SStatus's DET to become "device and
  * comm ok" (or time out after 50 us if no device), then set SControl's
@@ -137,6 +174,10 @@ int ide_preinit(void)
 	int ret = MVSATA_STATUS_TIMEOUT;
 	int status;
 
+#ifdef CONFIG_ARMADA_XP
+	mvsata_ide_conf_mbus_windows();
+#endif
+
 	/* Enable ATA port 0 (could be SATA port 0 or 1) if declared */
 #if defined(CONFIG_SYS_ATA_IDE0_OFFSET)
 	status = mvsata_ide_initialize_port(
diff --git a/include/configs/db-mv784mp-gp.h b/include/configs/db-mv784mp-gp.h
index c33a588..0fdf3a5 100644
--- a/include/configs/db-mv784mp-gp.h
+++ b/include/configs/db-mv784mp-gp.h
@@ -32,6 +32,7 @@
 #define CONFIG_CMD_SPI
 #define CONFIG_CMD_TFTPPUT
 #define CONFIG_CMD_TIME
+#define CONFIG_CMD_IDE
 
 /* I2C */
 #define CONFIG_SYS_I2C
@@ -60,6 +61,34 @@
 #define CONFIG_SYS_CONSOLE_INFO_QUIET	/* don't print console @ startup */
 #define CONFIG_SYS_ALT_MEMTEST
 
+/* SATA support */
+#ifdef CONFIG_CMD_IDE
+#define __io
+#define CONFIG_IDE_PREINIT
+#define CONFIG_MVSATA_IDE
+
+/* Needs byte-swapping for ATA data register */
+#define CONFIG_IDE_SWAP_IO
+
+#define CONFIG_SYS_ATA_REG_OFFSET	0x0100      /* Offset for normal register accesses*/
+#define CONFIG_SYS_ATA_DATA_OFFSET	0x0100      /* Offset for data I/O */
+#define CONFIG_SYS_ATA_ALT_OFFSET	0x0100
+
+/* Each 8-bit ATA register is aligned to a 4-bytes address */
+#define CONFIG_SYS_ATA_STRIDE		4
+
+/* CONFIG_CMD_IDE requires some #defines for ATA registers */
+#define CONFIG_SYS_IDE_MAXBUS		2
+#define CONFIG_SYS_IDE_MAXDEVICE	CONFIG_SYS_IDE_MAXBUS
+
+/* ATA registers base is at SATA controller base */
+#define CONFIG_SYS_ATA_BASE_ADDR	MVEBU_AXP_SATA_BASE
+#define CONFIG_SYS_ATA_IDE0_OFFSET	0x2000
+#define CONFIG_SYS_ATA_IDE1_OFFSET	0x4000
+
+#define CONFIG_DOS_PARTITION
+#endif /* CONFIG_CMD_IDE */
+
 /*
  * mv-common.h should be defined after CMD configs since it used them
  * to enable certain macros
-- 
2.3.6