[ep93xx] add support for 2.6.36 kernel

[openwrt.git] / target / linux / ep93xx / patches-2.6.36 / 001-ep93xx_cpuinfo.patch

diff --git a/target/linux/ep93xx/patches-2.6.36/001-ep93xx_cpuinfo.patch b/target/linux/ep93xx/patches-2.6.36/001-ep93xx_cpuinfo.patch
new file mode 100644 (file)
index 0000000..171787e
--- /dev/null
+++ b/target/linux/ep93xx/patches-2.6.36/001-ep93xx_cpuinfo.patch
@@ -0,0 +1,59 @@
+This patch puts the EP93xx chip revision and unique ID into /proc/cpuinfo.
+This is necessary to be able to set a unique MAC address for DHCP purposes
+by adding a line to /etc/network/interfaces:
+
+# Generate a unique locally-assigned MAC address from the CPU serial number
+pre-up ifconfig eth0 hw ether `sed -n 's/^Serial.* 000000/02/p' /proc/cpuinfo`
+
+It uses the chip revision reading code in the ep93xx-chip-revision patch.
+
+Really, this is wrong, since /proc/cpuinfo should report the revision and
+serial number of the ARM920T processor, while these are the rev and serial
+of the EP93xx SoC. In a future kernel (>2.6.34) there may be a new file
+/proc/socinfo for this information.
+
+       -martinwguy 14 May 2010
+
+--- a/arch/arm/kernel/setup.c
++++ b/arch/arm/kernel/setup.c
+@@ -47,6 +47,12 @@
+ #include <asm/traps.h>
+ #include <asm/unwind.h>
+ 
++#if defined(CONFIG_ARCH_EP93XX)
++#include <mach/io.h>
++#include <mach/ep93xx-regs.h>
++#include <mach/platform.h>
++#endif
++
+ #if defined(CONFIG_DEPRECATED_PARAM_STRUCT)
+ #include "compat.h"
+ #endif
+@@ -953,9 +959,16 @@ static int c_show(struct seq_file *m, vo
+       seq_puts(m, "\n");
+ 
+       seq_printf(m, "Hardware\t: %s\n", machine_name);
++#if defined(CONFIG_ARCH_EP93XX)
++      seq_printf(m, "Revision\t: %04x\n",
++           ep93xx_chip_revision());
++      seq_printf(m, "Serial\t\t: %016x\n",
++           *((unsigned int *)EP93XX_SECURITY_UNIQID));
++#else
+       seq_printf(m, "Revision\t: %04x\n", system_rev);
+       seq_printf(m, "Serial\t\t: %08x%08x\n",
+                  system_serial_high, system_serial_low);
++#endif
+ 
+       return 0;
+ }
+--- a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
++++ b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
+@@ -97,6 +97,8 @@
+ #define EP93XX_I2S_BASE                       EP93XX_APB_IOMEM(0x00020000)
+ 
+ #define EP93XX_SECURITY_BASE          EP93XX_APB_IOMEM(0x00030000)
++#define EP93XX_SECURITY_REG(x)                (EP93XX_SECURITY_BASE + (x))
++#define EP93XX_SECURITY_UNIQID                EP93XX_SECURITY_REG(0x2440)
+ 
+ #define EP93XX_GPIO_BASE              EP93XX_APB_IOMEM(0x00040000)
+ #define EP93XX_GPIO_REG(x)            (EP93XX_GPIO_BASE + (x))