sunxi: Print soc-id from sram controller for sun8i boards

As the need for various magic sram pokes has shown this maybe useful
info to have. e.g. this shows one of my a23 tablets having an id of
1661 rather then the usual 1650 for the a23.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

diff --git a/arch/arm/cpu/armv7/sunxi/cpu_info.c b/arch/arm/cpu/armv7/sunxi/cpu_info.c
index b9bc70ca86a51803ab2e25f982142b5045497f8d..c0eabdf91d353648c109f0edf64bf822369fe3df 100644 (file)
--- a/arch/arm/cpu/armv7/sunxi/cpu_info.c
+++ b/arch/arm/cpu/armv7/sunxi/cpu_info.c
@@ -38,6 +38,20 @@ int sunxi_get_ss_bonding_id(void)
 }
 #endif
 
+#ifdef CONFIG_MACH_SUN8I
+uint sunxi_get_sram_id(void)
+{
+       uint id;
+
+       /* Unlock sram info reg, read it, relock */
+       setbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15));
+       id = readl(SUNXI_SRAMC_BASE + 0x24) >> 16;
+       clrbits_le32(SUNXI_SRAMC_BASE + 0x24, (1 << 15));
+
+       return id;
+}
+#endif
+
 #ifdef CONFIG_DISPLAY_CPUINFO
 int print_cpuinfo(void)
 {
@@ -66,15 +80,15 @@ int print_cpuinfo(void)
 #elif defined CONFIG_MACH_SUN7I
        puts("CPU:   Allwinner A20 (SUN7I)\n");
 #elif defined CONFIG_MACH_SUN8I_A23
-       puts("CPU:   Allwinner A23 (SUN8I)\n");
+       printf("CPU:   Allwinner A23 (SUN8I %04x)\n", sunxi_get_sram_id());
 #elif defined CONFIG_MACH_SUN8I_A33
-       puts("CPU:   Allwinner A33 (SUN8I)\n");
+       printf("CPU:   Allwinner A33 (SUN8I %04x)\n", sunxi_get_sram_id());
+#elif defined CONFIG_MACH_SUN8I_A83T
+       printf("CPU:   Allwinner A83T (SUN8I %04x)\n", sunxi_get_sram_id());
 #elif defined CONFIG_MACH_SUN8I_H3
-       puts("CPU:   Allwinner H3 (SUN8I)\n");
+       printf("CPU:   Allwinner H3 (SUN8I %04x)\n", sunxi_get_sram_id());
 #elif defined CONFIG_MACH_SUN9I
        puts("CPU:   Allwinner A80 (SUN9I)\n");
-#elif defined CONFIG_MACH_SUN8I_A83T
-       puts("CPU:   Allwinner A83T (SUN8I)\n");
 #else
 #warning Please update cpu_info.c with correct CPU information
        puts("CPU:   SUNXI Family\n");