@@ -190,13 +190,64 @@ int arch_cpu_init(void)
#endif
#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";
+ case HW_DIGCTL_CHIPID_MX23:
+ return "23";
+ 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 "??";
+ }
+ case HW_DIGCTL_CHIPID_MX23:
+ switch (rev) {
+ case 0x0:
+ return "1.0";
+ case 0x1:
+ return "1.1";
+ case 0x2:
+ return "1.2";
+ case 0x3:
+ return "1.3";
+ case 0x4:
+ return "1.4";
+ 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;
}
@@ -152,4 +152,9 @@ struct mx28_digctl_regs {
};
#endif
+/* Product code identification */
+#define HW_DIGCTL_CHIPID_MASK (0xffff << 16)
+#define HW_DIGCTL_CHIPID_MX23 (0x3780 << 16)
+#define HW_DIGCTL_CHIPID_MX28 (0x2800 << 16)
+
#endif /* __MX28_REGS_DIGCTL_H__ */
The information now is gathered from HW_DIGCTL_CHIPID register and includes the revision of the chip on the output. Signed-off-by: Otavio Salvador <otavio@ossystems.com.br> Cc: Marek Vasut <marex@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com> --- Changes for v3: * fix info order (first rev, then clock) Changes for v2: * use ?? for unidentified revision and cpu type * use numeric revisions arch/arm/cpu/arm926ejs/mx28/mx28.c | 55 +++++++++++++++++++++++++- arch/arm/include/asm/arch-mx28/regs-digctl.h | 5 +++ 2 files changed, 58 insertions(+), 2 deletions(-)