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authorSteve Sakoman <steve@sakoman.com>2010-07-15 16:19:16 -0400
committerSandeep Paulraj <s-paulraj@ti.com>2010-07-15 16:19:16 -0400
commit27952014c465eec646157d5d045c084b94e3f2d7 (patch)
tree4effebce5a22cc65e1132efecf7f45711d7e3bde /arch
parent900c0c6b0a67b2372075f42a343205f384b0c120 (diff)
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ARMV7: Add basic gpmc initialization for OMAP4
This patch adds a gpmc_init function for OMAP4 and adds calls to gpmc_init for existing OMAP4 boards: panda and sdp4430 Signed-off-by: Steve Sakoman <steve@sakoman.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/armv7/omap4/Makefile1
-rw-r--r--arch/arm/cpu/armv7/omap4/mem.c45
-rw-r--r--arch/arm/include/asm/arch-omap4/cpu.h48
-rw-r--r--arch/arm/include/asm/arch-omap4/omap4.h2
-rw-r--r--arch/arm/include/asm/arch-omap4/sys_proto.h1
5 files changed, 96 insertions, 1 deletions
diff --git a/arch/arm/cpu/armv7/omap4/Makefile b/arch/arm/cpu/armv7/omap4/Makefile
index ecf64f9..d926fbb 100644
--- a/arch/arm/cpu/armv7/omap4/Makefile
+++ b/arch/arm/cpu/armv7/omap4/Makefile
@@ -28,6 +28,7 @@ LIB = $(obj)lib$(SOC).a
SOBJS += lowlevel_init.o
COBJS += board.o
+COBJS += mem.o
COBJS += sys_info.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/arch/arm/cpu/armv7/omap4/mem.c b/arch/arm/cpu/armv7/omap4/mem.c
new file mode 100644
index 0000000..878f0e3
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap4/mem.c
@@ -0,0 +1,45 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Steve Sakoman <steve@sakoman.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <asm/arch/cpu.h>
+#include <asm/arch/sys_proto.h>
+
+struct gpmc *gpmc_cfg;
+
+/*****************************************************
+ * gpmc_init(): init gpmc bus
+ * This code can only be executed from SRAM or SDRAM.
+ *****************************************************/
+void gpmc_init(void)
+{
+ gpmc_cfg = (struct gpmc *)GPMC_BASE;
+
+ /* global settings */
+ writel(0, &gpmc_cfg->irqenable); /* isr's sources masked */
+ writel(0, &gpmc_cfg->timeout_control);/* timeout disable */
+
+ /*
+ * Disable the GPMC0 config set by ROM code
+ * It conflicts with our MPDB (both at 0x08000000)
+ */
+ writel(0, &gpmc_cfg->cs[0].config7);
+}
diff --git a/arch/arm/include/asm/arch-omap4/cpu.h b/arch/arm/include/asm/arch-omap4/cpu.h
index 7d8aa20..c056b95 100644
--- a/arch/arm/include/asm/arch-omap4/cpu.h
+++ b/arch/arm/include/asm/arch-omap4/cpu.h
@@ -31,6 +31,51 @@
#ifndef __KERNEL_STRICT_NAMES
#ifndef __ASSEMBLY__
+struct gpmc_cs {
+ u32 config1; /* 0x00 */
+ u32 config2; /* 0x04 */
+ u32 config3; /* 0x08 */
+ u32 config4; /* 0x0C */
+ u32 config5; /* 0x10 */
+ u32 config6; /* 0x14 */
+ u32 config7; /* 0x18 */
+ u32 nand_cmd; /* 0x1C */
+ u32 nand_adr; /* 0x20 */
+ u32 nand_dat; /* 0x24 */
+ u8 res[8]; /* blow up to 0x30 byte */
+};
+
+struct gpmc {
+ u8 res1[0x10];
+ u32 sysconfig; /* 0x10 */
+ u8 res2[0x4];
+ u32 irqstatus; /* 0x18 */
+ u32 irqenable; /* 0x1C */
+ u8 res3[0x20];
+ u32 timeout_control; /* 0x40 */
+ u8 res4[0xC];
+ u32 config; /* 0x50 */
+ u32 status; /* 0x54 */
+ u8 res5[0x8]; /* 0x58 */
+ struct gpmc_cs cs[8]; /* 0x60, 0x90, .. */
+ u8 res6[0x14]; /* 0x1E0 */
+ u32 ecc_config; /* 0x1F4 */
+ u32 ecc_control; /* 0x1F8 */
+ u32 ecc_size_config; /* 0x1FC */
+ u32 ecc1_result; /* 0x200 */
+ u32 ecc2_result; /* 0x204 */
+ u32 ecc3_result; /* 0x208 */
+ u32 ecc4_result; /* 0x20C */
+ u32 ecc5_result; /* 0x210 */
+ u32 ecc6_result; /* 0x214 */
+ u32 ecc7_result; /* 0x218 */
+ u32 ecc8_result; /* 0x21C */
+ u32 ecc9_result; /* 0x220 */
+};
+
+/* Used for board specific gpmc initialization */
+extern struct gpmc *gpmc_cfg;
+
struct gptimer {
u32 tidr; /* 0x00 r */
u8 res[0xc];
@@ -86,6 +131,9 @@ struct watchdog {
#define TCLR_AR (0x1 << 1)
#define TCLR_PRE (0x1 << 5)
+/* GPMC BASE */
+#define GPMC_BASE (OMAP44XX_GPMC_BASE)
+
/* I2C base */
#define I2C_BASE1 (OMAP44XX_L4_PER_BASE + 0x70000)
#define I2C_BASE2 (OMAP44XX_L4_PER_BASE + 0x72000)
diff --git a/arch/arm/include/asm/arch-omap4/omap4.h b/arch/arm/include/asm/arch-omap4/omap4.h
index d123d6a..5243ea8 100644
--- a/arch/arm/include/asm/arch-omap4/omap4.h
+++ b/arch/arm/include/asm/arch-omap4/omap4.h
@@ -62,7 +62,7 @@
#define SYNC_32KTIMER_BASE (OMAP44XX_L4_WKUP_BASE + 0x4000)
/* GPMC */
-#define GPMC_BASE 0x50000000
+#define OMAP44XX_GPMC_BASE 0x50000000
/*
* Hardware Register Details
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
index 6f4d3d5..c6fab00 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -28,6 +28,7 @@ struct omap_sysinfo {
char *board_string;
};
+void gpmc_init(void);
void watchdog_init(void);
u32 get_device_type(void);
void invalidate_dcache(u32);