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authorValentin Longchamp <valentin.longchamp@keymile.com>2012-06-13 03:01:03 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-07-07 14:07:33 +0200
commit0c25defccdc0461bf6695d7e0fe3091c9da8778e (patch)
tree86a9e4ae4a86be5a090847e052927627b1984bf4
parentdacc8c6f79aa4016e431278d31431a19d43c6b37 (diff)
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arm/km: use spi claim bus to switch between SPI and NAND
We overwrite these weak functions from the kirkwood spi code to use our own method to be able to switch between the SPI NOR and the NAND flash. This is needed e.g. to update the u-boot. The former command do_spi_toggle can therefore be removed. And the usage of this command is removed from the u-boot update command in the u-boot environment. Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com> Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com> cc: Holger Brunck <holger.brunck@keymile.com> cc: Prafulla Wadaskar <prafulla@marvell.com>
-rw-r--r--board/keymile/km_arm/km_arm.c44
-rw-r--r--include/configs/km/km_arm.h9
2 files changed, 13 insertions, 40 deletions
diff --git a/board/keymile/km_arm/km_arm.c b/board/keymile/km_arm/km_arm.c
index ed12b5c..cb3402b 100644
--- a/board/keymile/km_arm/km_arm.c
+++ b/board/keymile/km_arm/km_arm.c
@@ -33,6 +33,7 @@
#include <nand.h>
#include <netdev.h>
#include <miiphy.h>
+#include <spi.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/kirkwood.h>
@@ -284,48 +285,17 @@ int board_init(void)
return 0;
}
-#if defined(CONFIG_CMD_SF)
-int do_spi_toggle(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int board_spi_claim_bus(struct spi_slave *slave)
{
- u32 tmp;
- if (argc < 2)
- return cmd_usage(cmdtp);
-
- if ((strcmp(argv[1], "off") == 0)) {
- printf("SPI FLASH disabled, NAND enabled\n");
- /* Multi-Purpose Pins Functionality configuration */
- kwmpp_config[0] = MPP0_NF_IO2;
- kwmpp_config[1] = MPP1_NF_IO3;
- kwmpp_config[2] = MPP2_NF_IO4;
- kwmpp_config[3] = MPP3_NF_IO5;
-
- kirkwood_mpp_conf(kwmpp_config, NULL);
- tmp = readl(KW_GPIO0_BASE);
- writel(tmp | FLASH_GPIO_PIN , KW_GPIO0_BASE);
- } else if ((strcmp(argv[1], "on") == 0)) {
- printf("SPI FLASH enabled, NAND disabled\n");
- /* Multi-Purpose Pins Functionality configuration */
- kwmpp_config[0] = MPP0_SPI_SCn;
- kwmpp_config[1] = MPP1_SPI_MOSI;
- kwmpp_config[2] = MPP2_SPI_SCK;
- kwmpp_config[3] = MPP3_SPI_MISO;
-
- kirkwood_mpp_conf(kwmpp_config, NULL);
- tmp = readl(KW_GPIO0_BASE);
- writel(tmp & (~FLASH_GPIO_PIN) , KW_GPIO0_BASE);
- } else {
- return cmd_usage(cmdtp);
- }
+ kw_gpio_set_value(KM_FLASH_GPIO_PIN, 0);
return 0;
}
-U_BOOT_CMD(
- spitoggle, 2, 0, do_spi_toggle,
- "En-/disable SPI FLASH access",
- "<on|off> - Enable (on) or disable (off) SPI FLASH access\n"
- );
-#endif
+void board_spi_release_bus(struct spi_slave *slave)
+{
+ kw_gpio_set_value(KM_FLASH_GPIO_PIN, 1);
+}
int dram_init(void)
{
diff --git a/include/configs/km/km_arm.h b/include/configs/km/km_arm.h
index 4a0b80e..b14093f 100644
--- a/include/configs/km/km_arm.h
+++ b/include/configs/km/km_arm.h
@@ -227,7 +227,11 @@ int get_scl(void);
#define CONFIG_SPI_FLASH
#define CONFIG_SPI_FLASH_STMICRO
+/* SPI bus claim MPP configuration */
+#define CONFIG_SYS_KW_SPI_MPP 0x0
+
#define FLASH_GPIO_PIN 0x00010000
+#define KM_FLASH_GPIO_PIN 16
#ifndef MTDIDS_DEFAULT
# define MTDIDS_DEFAULT "nand0=orion_nand"
@@ -241,9 +245,8 @@ int get_scl(void);
#define CONFIG_KM_UPDATE_UBOOT \
"update=" \
- "spi on;sf probe 0;sf erase 0 +${filesize};" \
- "sf write ${load_addr_r} 0 ${filesize};" \
- "spi off\0"
+ "sf probe 0;sf erase 0 +${filesize};" \
+ "sf write ${load_addr_r} 0 ${filesize};\0"
/*
* Default environment variables