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authorHelge Deller <deller@gmx.de>2019-02-08 18:28:13 +0100
committerHelge Deller <deller@gmx.de>2019-02-21 20:37:13 +0100
commit8207d4ee44d3f525bf9aa57807ac9db5d0d90c1a (patch)
tree13c14cc3d981f137402301355c92cf4f58abb351 /arch/parisc
parentparisc: Add constants for PDC_RELOCATE PDC call (diff)
downloadlinux-dev-8207d4ee44d3f525bf9aa57807ac9db5d0d90c1a.tar.xz
linux-dev-8207d4ee44d3f525bf9aa57807ac9db5d0d90c1a.zip
parisc: Show machine product number during boot
Ask PDC firmware during boot for the original and current product number as well as the serial number and show it (if available). Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/include/asm/pdc.h1
-rw-r--r--arch/parisc/kernel/firmware.c24
-rw-r--r--arch/parisc/kernel/processor.c9
3 files changed, 34 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/pdc.h b/arch/parisc/include/asm/pdc.h
index 5b187d40d604..19bb2e46cd36 100644
--- a/arch/parisc/include/asm/pdc.h
+++ b/arch/parisc/include/asm/pdc.h
@@ -44,6 +44,7 @@ int pdc_model_sysmodel(char *name);
int pdc_model_cpuid(unsigned long *cpu_id);
int pdc_model_versions(unsigned long *versions, int id);
int pdc_model_capabilities(unsigned long *capabilities);
+int pdc_model_platform_info(char *orig_prod_num, char *current_prod_num, char *serial_no);
int pdc_cache_info(struct pdc_cache_info *cache);
int pdc_spaceid_bits(unsigned long *space_bits);
#ifndef CONFIG_PA20
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index e6f3b49f2fd7..7a17551ea31e 100644
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -569,6 +569,30 @@ int pdc_model_capabilities(unsigned long *capabilities)
}
/**
+ * pdc_model_platform_info - Returns machine product and serial number.
+ * @orig_prod_num: Return buffer for original product number.
+ * @current_prod_num: Return buffer for current product number.
+ * @serial_no: Return buffer for serial number.
+ *
+ * Returns strings containing the original and current product numbers and the
+ * serial number of the system.
+ */
+int pdc_model_platform_info(char *orig_prod_num, char *current_prod_num,
+ char *serial_no)
+{
+ int retval;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pdc_lock, flags);
+ retval = mem_pdc_call(PDC_MODEL, PDC_MODEL_GET_PLATFORM_INFO,
+ __pa(orig_prod_num), __pa(current_prod_num), __pa(serial_no));
+ convert_to_wide(pdc_result);
+ spin_unlock_irqrestore(&pdc_lock, flags);
+
+ return retval;
+}
+
+/**
* pdc_cache_info - Return cache and TLB information.
* @cache_info: The return buffer.
*
diff --git a/arch/parisc/kernel/processor.c b/arch/parisc/kernel/processor.c
index 82bd0d0927ce..7f4d042856b5 100644
--- a/arch/parisc/kernel/processor.c
+++ b/arch/parisc/kernel/processor.c
@@ -242,6 +242,7 @@ static int __init processor_probe(struct parisc_device *dev)
void __init collect_boot_cpu_data(void)
{
unsigned long cr16_seed;
+ char orig_prod_num[64], current_prod_num[64], serial_no[64];
memset(&boot_cpu_data, 0, sizeof(boot_cpu_data));
@@ -301,6 +302,14 @@ void __init collect_boot_cpu_data(void)
_parisc_requires_coherency = (boot_cpu_data.cpu_type == mako) ||
(boot_cpu_data.cpu_type == mako2);
#endif
+
+ if (pdc_model_platform_info(orig_prod_num, current_prod_num, serial_no) == PDC_OK) {
+ printk(KERN_INFO "product %s, original product %s, S/N: %s\n",
+ current_prod_num, orig_prod_num, serial_no);
+ add_device_randomness(orig_prod_num, strlen(orig_prod_num));
+ add_device_randomness(current_prod_num, strlen(current_prod_num));
+ add_device_randomness(serial_no, strlen(serial_no));
+ }
}