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From f888824d352df894ab721a5ca067b0313500efe7 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Thu, 3 May 2012 12:17:54 +0200
Subject: [PATCH 38/59] MIPS: BCM63XX: store the flash type in global variable
---
arch/mips/bcm63xx/dev-flash.c | 36 +++++++++++++------
.../include/asm/mach-bcm63xx/bcm63xx_dev_flash.h | 2 +
2 files changed, 26 insertions(+), 12 deletions(-)
--- a/arch/mips/bcm63xx/dev-flash.c
+++ b/arch/mips/bcm63xx/dev-flash.c
@@ -25,6 +25,8 @@
#include <bcm63xx_regs.h>
#include <bcm63xx_io.h>
+int bcm63xx_attached_flash = -1;
+
static struct mtd_partition mtd_partitions[] = {
{
.name = "cfe",
@@ -86,21 +88,24 @@ static int __init bcm63xx_detect_flash_t
bcm63xx_spi_flash_info[0].max_speed_hz = 16666667;
if (val & STRAPBUS_6328_BOOT_SEL_SERIAL)
- return BCM63XX_FLASH_TYPE_SERIAL;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_SERIAL;
else
- return BCM63XX_FLASH_TYPE_NAND;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_NAND;
+ break;
case BCM6338_CPU_ID:
case BCM6345_CPU_ID:
case BCM6348_CPU_ID:
/* no way to auto detect so assume parallel */
- return BCM63XX_FLASH_TYPE_PARALLEL;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_PARALLEL;
+ break;
case BCM3368_CPU_ID:
case BCM6358_CPU_ID:
val = bcm_gpio_readl(GPIO_STRAPBUS_REG);
if (val & STRAPBUS_6358_BOOT_SEL_PARALLEL)
- return BCM63XX_FLASH_TYPE_PARALLEL;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_PARALLEL;
else
- return BCM63XX_FLASH_TYPE_SERIAL;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_SERIAL;
+ break;
case BCM6362_CPU_ID:
val = bcm_misc_readl(MISC_STRAPBUS_6362_REG);
if (val & STRAPBUS_6362_HSSPI_CLK_FAST)
@@ -109,9 +114,10 @@ static int __init bcm63xx_detect_flash_t
bcm63xx_spi_flash_info[0].max_speed_hz = 20000000;
if (val & STRAPBUS_6362_BOOT_SEL_SERIAL)
- return BCM63XX_FLASH_TYPE_SERIAL;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_SERIAL;
else
- return BCM63XX_FLASH_TYPE_NAND;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_NAND;
+ break;
case BCM6368_CPU_ID:
val = bcm_gpio_readl(GPIO_STRAPBUS_REG);
if (val & STRAPBUS_6368_SPI_CLK_FAST)
@@ -119,11 +125,16 @@ static int __init bcm63xx_detect_flash_t
switch (val & STRAPBUS_6368_BOOT_SEL_MASK) {
case STRAPBUS_6368_BOOT_SEL_NAND:
- return BCM63XX_FLASH_TYPE_NAND;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_NAND;
+ break;
case STRAPBUS_6368_BOOT_SEL_SERIAL:
- return BCM63XX_FLASH_TYPE_SERIAL;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_SERIAL;
+ break;
case STRAPBUS_6368_BOOT_SEL_PARALLEL:
- return BCM63XX_FLASH_TYPE_PARALLEL;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_PARALLEL;
+ break;
+ default:
+ return -EINVAL;
}
case BCM63268_CPU_ID:
val = bcm_misc_readl(MISC_STRAPBUS_63268_REG);
@@ -133,22 +144,24 @@ static int __init bcm63xx_detect_flash_t
bcm63xx_spi_flash_info[0].max_speed_hz = 20000000;
if (val & STRAPBUS_63268_BOOT_SEL_SERIAL)
- return BCM63XX_FLASH_TYPE_SERIAL;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_SERIAL;
else
- return BCM63XX_FLASH_TYPE_NAND;
+ bcm63xx_attached_flash = BCM63XX_FLASH_TYPE_NAND;
default:
return -EINVAL;
}
+
+ return 0;
}
int __init bcm63xx_flash_register(void)
{
- int flash_type;
u32 val;
- flash_type = bcm63xx_detect_flash_type();
- switch (flash_type) {
+ bcm63xx_detect_flash_type();
+
+ switch (bcm63xx_attached_flash) {
case BCM63XX_FLASH_TYPE_PARALLEL:
/* read base address of boot chip select (0) */
val = bcm_mpi_readl(MPI_CSBASE_REG(0));
@@ -172,7 +185,7 @@ int __init bcm63xx_flash_register(void)
return -ENODEV;
default:
pr_err("flash detection failed for BCM%x: %d\n",
- bcm63xx_get_cpu_id(), flash_type);
+ bcm63xx_get_cpu_id(), bcm63xx_attached_flash);
return -ENODEV;
}
}
--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_flash.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_flash.h
@@ -7,6 +7,8 @@ enum {
BCM63XX_FLASH_TYPE_NAND,
};
+extern int bcm63xx_attached_flash;
+
int __init bcm63xx_flash_register(void);
#endif /* __BCM63XX_FLASH_H */
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