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mx53loco: Add CONFIG_REVISION_TAG

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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>
This commit is contained in:
Fabio Estevam 2012-05-08 03:40:49 +00:00 committed by Albert ARIBAUD
parent 768a059710
commit 54cd1dee8f
3 changed files with 18 additions and 0 deletions
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5
arch/arm/include/asm/arch-mx5/imx-regs.h
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@ -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];

12
board/freescale/mx53loco/mx53loco.c
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@ -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 */

1
include/configs/mx53loco.h
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@ -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