MX28: extend print_cpuinfo() to use chip information
The information now is gathered from HW_DIGCTL_CHIPID register and
includes the chip modem and revision on the output.
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
diff --git a/arch/arm/cpu/arm926ejs/mx28/mx28.c b/arch/arm/cpu/arm926ejs/mx28/mx28.c
index ff25772..cf7a50f 100644
--- a/arch/arm/cpu/arm926ejs/mx28/mx28.c
+++ b/arch/arm/cpu/arm926ejs/mx28/mx28.c
@@ -188,13 +188,47 @@
}
#if defined(CONFIG_DISPLAY_CPUINFO)
+static const char *get_cpu_type(void)
+{
+ struct mx28_digctl_regs *digctl_regs =
+ (struct mx28_digctl_regs *)MXS_DIGCTL_BASE;
+
+ switch (readl(&digctl_regs->hw_digctl_chipid) & HW_DIGCTL_CHIPID_MASK) {
+ case HW_DIGCTL_CHIPID_MX28:
+ return "28";
+ default:
+ return "??";
+ }
+}
+
+static const char *get_cpu_rev(void)
+{
+ struct mx28_digctl_regs *digctl_regs =
+ (struct mx28_digctl_regs *)MXS_DIGCTL_BASE;
+ uint8_t rev = readl(&digctl_regs->hw_digctl_chipid) & 0x000000FF;
+
+ switch (readl(&digctl_regs->hw_digctl_chipid) & HW_DIGCTL_CHIPID_MASK) {
+ case HW_DIGCTL_CHIPID_MX28:
+ switch (rev) {
+ case 0x1:
+ return "1.2";
+ default:
+ return "??";
+ }
+ default:
+ return "??";
+ }
+}
+
int print_cpuinfo(void)
{
struct mx28_spl_data *data = (struct mx28_spl_data *)
((CONFIG_SYS_TEXT_BASE - sizeof(struct mx28_spl_data)) & ~0xf);
- printf("Freescale i.MX28 family at %d MHz\n",
- mxc_get_clock(MXC_ARM_CLK) / 1000000);
+ printf("CPU: Freescale i.MX%s rev%s at %d MHz\n",
+ get_cpu_type(),
+ get_cpu_rev(),
+ mxc_get_clock(MXC_ARM_CLK) / 1000000);
printf("BOOT: %s\n", mx28_boot_modes[data->boot_mode_idx].mode);
return 0;
}