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60 lines
2.0 KiB
Diff
60 lines
2.0 KiB
Diff
This patch puts the EP93xx chip revision and unique ID into /proc/cpuinfo.
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This is necessary to be able to set a unique MAC address for DHCP purposes
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by adding a line to /etc/network/interfaces:
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# Generate a unique locally-assigned MAC address from the CPU serial number
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pre-up ifconfig eth0 hw ether `sed -n 's/^Serial.* 000000/02/p' /proc/cpuinfo`
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It uses the chip revision reading code in the ep93xx-chip-revision patch.
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Really, this is wrong, since /proc/cpuinfo should report the revision and
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serial number of the ARM920T processor, while these are the rev and serial
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of the EP93xx SoC. In a future kernel (>2.6.34) there may be a new file
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/proc/socinfo for this information.
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-martinwguy 14 May 2010
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--- a/arch/arm/kernel/setup.c
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+++ b/arch/arm/kernel/setup.c
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@@ -48,6 +48,12 @@
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#include <asm/traps.h>
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#include <asm/unwind.h>
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+#if defined(CONFIG_ARCH_EP93XX)
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+#include <mach/io.h>
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+#include <mach/ep93xx-regs.h>
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+#include <mach/platform.h>
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+#endif
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+
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#if defined(CONFIG_DEPRECATED_PARAM_STRUCT)
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#include "compat.h"
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#endif
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@@ -1005,9 +1011,16 @@ static int c_show(struct seq_file *m, vo
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seq_puts(m, "\n");
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seq_printf(m, "Hardware\t: %s\n", machine_name);
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+#if defined(CONFIG_ARCH_EP93XX)
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+ seq_printf(m, "Revision\t: %04x\n",
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+ ep93xx_chip_revision());
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+ seq_printf(m, "Serial\t\t: %016x\n",
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+ *((unsigned int *)EP93XX_SECURITY_UNIQID));
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+#else
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seq_printf(m, "Revision\t: %04x\n", system_rev);
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seq_printf(m, "Serial\t\t: %08x%08x\n",
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system_serial_high, system_serial_low);
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+#endif
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return 0;
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}
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--- a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
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+++ b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
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@@ -97,6 +97,8 @@
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#define EP93XX_I2S_BASE EP93XX_APB_IOMEM(0x00020000)
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#define EP93XX_SECURITY_BASE EP93XX_APB_IOMEM(0x00030000)
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+#define EP93XX_SECURITY_REG(x) (EP93XX_SECURITY_BASE + (x))
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+#define EP93XX_SECURITY_UNIQID EP93XX_SECURITY_REG(0x2440)
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#define EP93XX_GPIO_BASE EP93XX_APB_IOMEM(0x00040000)
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#define EP93XX_GPIO_REG(x) (EP93XX_GPIO_BASE + (x))
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