On 08/30/2011 03:54 PM, Fabio Estevam wrote:
> Print the silicon revison during boot.
>
> Signed-off-by: Fabio Estevam <fabio.este...@freescale.com>
> ---
Hi Fabio,
>
> +
> +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 |= CHIP_REV_UNKNOWN;
> + break;
> + }
> +
> + return system_rev;
> +}
> +
> #if defined(CONFIG_DISPLAY_CPUINFO)
> int print_cpuinfo (void)
> {
> char buf[32];
> + u32 cpurev;
> +
> + cpurev = get_cpu_rev();
>
> - printf ("CPU: Freescale i.MX25 at %s MHz\n\n",
> + printf("CPU: Freescale i.MX25 rev%d.%d at %s MHz\n\n",
> + (cpurev & 0x000F0) >> 4,
> + (cpurev & 0x0000F) >> 0,
I see that we did different for other i.MX processor - if you check in
the MX31 processor, we print the "unknown" string if the revision number
does not match a known value instead of printing an arbitrary value as
here. Can we stick with the same behavior ?
Best regards,
Stefano Babic
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