diff options
| author | Fabio Estevam | 2011-09-02 05:38:54 +0000 |
|---|---|---|
| committer | Albert ARIBAUD | 2011-09-30 22:00:59 +0200 |
| commit | 986d0d1bc53e95aac988c1d4737f35ce94a593ca (patch) | |
| tree | 66657457e82789944aa39816d51b3344ce032ac9 /arch/arm | |
| parent | 0a0522cbff152aaff786499363366b76de261a69 (diff) | |
ARM: mx25: Print the silicon revison
Print the silicon revison during boot.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/arm926ejs/mx25/generic.c | 30 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx25/imx-regs.h | 3 |
2 files changed, 32 insertions, 1 deletions
diff --git a/arch/arm/cpu/arm926ejs/mx25/generic.c b/arch/arm/cpu/arm926ejs/mx25/generic.c index 76e4b5c3973..21fe44f187a 100644 --- a/arch/arm/cpu/arm926ejs/mx25/generic.c +++ b/arch/arm/cpu/arm926ejs/mx25/generic.c @@ -105,12 +105,40 @@ ulong imx_get_perclk (int clk) return lldiv (fref, div); } + +u32 get_cpu_rev(void) +{ + u32 srev; + u32 system_rev = 0x25000; + + /* read SREV register from IIM module */ + struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE; + srev = readl(&iim->iim_srev); + + switch (srev) { + case 0x00: + system_rev |= CHIP_REV_1_0; + break; + case 0x01: + system_rev |= CHIP_REV_1_1; + break; + default: + system_rev |= 0x8000; + break; + } + + return system_rev; +} + #if defined(CONFIG_DISPLAY_CPUINFO) int print_cpuinfo (void) { char buf[32]; + u32 cpurev = get_cpu_rev(); - printf ("CPU: Freescale i.MX25 at %s MHz\n\n", + printf("CPU: Freescale i.MX25 rev%d.%d%s at %s MHz\n\n", + (cpurev & 0xF0) >> 4, (cpurev & 0x0F), + ((cpurev & 0x8000) ? " unknown" : ""), strmhz (buf, imx_get_armclk ())); return 0; } diff --git a/arch/arm/include/asm/arch-mx25/imx-regs.h b/arch/arm/include/asm/arch-mx25/imx-regs.h index 9e30f7c2bc6..47fc5178159 100644 --- a/arch/arm/include/asm/arch-mx25/imx-regs.h +++ b/arch/arm/include/asm/arch-mx25/imx-regs.h @@ -351,4 +351,7 @@ struct aips_regs { #define GPIO3_BASE_ADDR IMX_GPIO3_BASE #define GPIO4_BASE_ADDR IMX_GPIO4_BASE +#define CHIP_REV_1_0 0x10 +#define CHIP_REV_1_1 0x11 + #endif /* _IMX_REGS_H */ |