FSL 2.6.35 kernel assumes that the bootloader passes the CONFIG_REVISION_TAG
information.
The kernel uses this data to distinguish between Dialog versus mc34708 based
boards,
and also to distinguish between revA and revB of the mc34708 based boards.
Suggested-by: Yu Li <y...@magniel.com>
Signed-off-by: Fabio Estevam <fabio.este...@freescale.com>
---
Changes since v1:
- Use proper io accessor for reading board revision
arch/arm/include/asm/arch-mx5/imx-regs.h | 5 +++++
board/freescale/mx53loco/mx53loco.c | 12 ++++++++++++
include/configs/mx53loco.h | 1 +
3 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/arch/arm/include/asm/arch-mx5/imx-regs.h
b/arch/arm/include/asm/arch-mx5/imx-regs.h
index a4245a3..cef4190 100644
--- a/arch/arm/include/asm/arch-mx5/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx5/imx-regs.h
@@ -491,6 +491,11 @@ struct iim_regs {
} bank[4];
};
+struct fuse_bank0_regs {
+ u32 fuse0_23[24];
+ u32 gp[8];
+};
+
struct fuse_bank1_regs {
u32 fuse0_8[9];
u32 mac_addr[6];
diff --git a/board/freescale/mx53loco/mx53loco.c
b/board/freescale/mx53loco/mx53loco.c
index 8c18b99..0dbde0c 100644
--- a/board/freescale/mx53loco/mx53loco.c
+++ b/board/freescale/mx53loco/mx53loco.c
@@ -62,6 +62,18 @@ void dram_init_banksize(void)
gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
}
+u32 get_board_rev(void)
+{
+ struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
+ struct fuse_bank *bank = &iim->bank[0];
+ struct fuse_bank0_regs *fuse =
+ (struct fuse_bank0_regs *)bank->fuse_regs;
+
+ int rev = readl(&fuse->gp[6]);
+
+ return (get_cpu_rev() & ~(0xF << 8)) | (rev & 0xF) << 8;
+}
+
static void setup_iomux_uart(void)
{
/* UART1 RXD */
diff --git a/include/configs/mx53loco.h b/include/configs/mx53loco.h
index 87f6ed1..eab0e27 100644
--- a/include/configs/mx53loco.h
+++ b/include/configs/mx53loco.h
@@ -43,6 +43,7 @@
#define CONFIG_BOARD_EARLY_INIT_F
#define CONFIG_BOARD_LATE_INIT
#define CONFIG_MXC_GPIO
+#define CONFIG_REVISION_TAG
#define CONFIG_MXC_UART
#define CONFIG_MXC_UART_BASE UART1_BASE
--
1.7.1
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