From 8207d4ee44d3f525bf9aa57807ac9db5d0d90c1a Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Fri, 8 Feb 2019 18:28:13 +0100 Subject: 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 --- arch/parisc/kernel/firmware.c | 24 ++++++++++++++++++++++++ arch/parisc/kernel/processor.c | 9 +++++++++ 2 files changed, 33 insertions(+) (limited to 'arch/parisc/kernel') 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 @@ -568,6 +568,30 @@ int pdc_model_capabilities(unsigned long *capabilities) return retval; } +/** + * 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)); + } } -- cgit v1.2.3