diff options
Diffstat (limited to 'target/linux/ep93xx/patches-3.3/001-ep93xx_cpuinfo.patch')
| -rw-r--r-- | target/linux/ep93xx/patches-3.3/001-ep93xx_cpuinfo.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/target/linux/ep93xx/patches-3.3/001-ep93xx_cpuinfo.patch b/target/linux/ep93xx/patches-3.3/001-ep93xx_cpuinfo.patch new file mode 100644 index 000000000..224d188b3 --- /dev/null +++ b/target/linux/ep93xx/patches-3.3/001-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 +@@ -54,6 +54,12 @@ + #include <asm/unwind.h> + #include <asm/memblock.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 +@@ -1087,9 +1093,16 @@ 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_PHYS_BASE EP93XX_APB_PHYS(0x00040000) + #define EP93XX_GPIO_BASE EP93XX_APB_IOMEM(0x00040000) |