Hi, Fabio,
2011/3/11 Fabio Estevam fabio.estevam@freescale.com:
Use the same method of the Linux kernel to print the MX31 silicon version on boot.
Tested on a MX31PDK with a 2.0 silicon, where it shows:
CPU: Freescale i.MX31 at 531 MHz MX31 silicon rev 2.0
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com
arch/arm/cpu/arm1136/mx31/generic.c | 18 ++++++++++++ arch/arm/include/asm/arch-mx31/mx31-regs.h | 4 ++ arch/arm/include/asm/imx_soc_revision.h | 42 ++++++++++++++++++++++++++++ 3 files changed, 64 insertions(+), 0 deletions(-) create mode 100644 arch/arm/include/asm/imx_soc_revision.h
diff --git a/arch/arm/cpu/arm1136/mx31/generic.c b/arch/arm/cpu/arm1136/mx31/generic.c index 8bd23ee..4791449 100644 --- a/arch/arm/cpu/arm1136/mx31/generic.c +++ b/arch/arm/cpu/arm1136/mx31/generic.c @@ -24,6 +24,7 @@ #include <common.h> #include <asm/arch/mx31-regs.h> #include <asm/io.h> +#include <asm/imx_soc_revision.h>
static u32 mx31_decode_pll(u32 reg, u32 infreq) { @@ -106,11 +107,28 @@ void mx31_set_pad(enum iomux_pins pin, u32 config)
}
+void mx31_read_cpu_rev(void) +{
- u32 i, srev;
- /* read SREV register from IIM module */
- srev = __raw_readl(MX31_IIM_BASE_ADDR + MXC_IIMSREV);
Need use struct way to access srev.
[code snip]
1.6.0.4
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