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ODROID-COMMON: cpuinfo: add to print the board UUID on eFUSE

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Change-Id: Ia6400b15d6a16329d0d326492a0131003de8785f
Signed-off-by: Dongjin Kim <tobetter@gmail.com>
This commit is contained in:
Dongjin Kim
2018-12-21 18:28:17 +09:00
parent 2e6bf8fc1a
commit 7e12aec898
2 changed files with 36 additions and 0 deletions
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33
arch/arm64/kernel/cpuinfo.c
View File

@@ -37,6 +37,9 @@
#include <linux/amlogic/cpu_version.h>
#endif
#ifdef CONFIG_ARCH_MESON64_ODROID_COMMON
#include <linux/amlogic/efuse.h>
#endif
/*
* In case the boot CPU is hotpluggable, we record its initial state and
@@ -164,12 +167,42 @@ static int c_show(struct seq_file *m, void *v)
seq_printf(m, "CPU part\t: 0x%03x\n", MIDR_PARTNUM(midr));
seq_printf(m, "CPU revision\t: %d\n\n", MIDR_REVISION(midr));
}
#ifdef CONFIG_ARCH_MESON64_ODROID_COMMON
#ifdef CONFIG_AMLOGIC_CPU_INFO
cpuinfo_get_chipid(chipid, CHIPID_LEN);
seq_puts(m, "CPU info\t: ");
for (i = 0; i < 16; i++)
seq_printf(m, "%02x", chipid[i]);
seq_puts(m, "\n");
#endif
{
int ret;
char uuid[32];
char *p = uuid;
loff_t pos = 0;
seq_puts(m, "Serial\t\t: ");
ret = efuse_read_usr(uuid, sizeof(uuid), &pos);
if ((ret < 0) || (ret != sizeof(uuid))) {
seq_puts(m, "Unknown\n");
} else {
for (i = 0; i < sizeof(uuid); i++) {
if ((i == 8) || (i == 12) || (i == 16) || (i == 20))
seq_putc(m, '-');
seq_printf(m, "%c", uuid[i]);
}
seq_putc(m, '\n');
}
}
#else
#ifdef CONFIG_AMLOGIC_CPU_INFO
cpuinfo_get_chipid(chipid, CHIPID_LEN);
seq_puts(m, "Serial\t\t: ");
for (i = 0; i < 16; i++)
seq_printf(m, "%02x", chipid[i]);
seq_puts(m, "\n");
#endif
#endif
system_rev = 0x0400;
seq_printf(m, "Hardware\t: %s\n", machine_name);

3
include/linux/amlogic/efuse.h
View File

@@ -34,4 +34,7 @@ ssize_t efuse_user_attr_read(char *name, char *buf);
#else
int efuse_read_intlItem(char *intl_item, char *buf, int size);
#endif
ssize_t efuse_read_usr(char *buf, size_t count, loff_t *ppos);
#endif