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authorFabio Estevam <fabio.estevam@freescale.com>2012-05-08 03:40:49 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-05-15 08:31:34 +0200
commit54cd1dee8f9537c2e3d5bfe2029bf31b2b1cf2f3 (patch)
treedeb53e4d51a34d3451268a28cc23727b3bb025ff
parent768a05971030c0c57e05063f20449b8d4138293e (diff)
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mx53loco: Add CONFIG_REVISION_TAG
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 <yk@magniel.com> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Stefano Babic <sbabic@denx.de>
-rw-r--r--arch/arm/include/asm/arch-mx5/imx-regs.h5
-rw-r--r--board/freescale/mx53loco/mx53loco.c12
-rw-r--r--include/configs/mx53loco.h1
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 a49b00a..fb13895 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