From 3f599875e5202986b350618a617527ab441bf206 Mon Sep 17 00:00:00 2001 From: Paul Kocialkowski Date: Wed, 6 May 2015 15:23:56 +0100 Subject: ARM: 8355/1: arch: Show the serial number from devicetree in cpuinfo This grabs the serial number shown in cpuinfo from the serial-number device-tree property in priority. When booting with ATAGs (and without device-tree), the provided number is still shown instead. Signed-off-by: Paul Kocialkowski Signed-off-by: Russell King --- arch/arm/kernel/setup.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) (limited to 'arch/arm/kernel/setup.c') diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 6c777e908a24..ee3e329ecf58 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -93,6 +93,9 @@ unsigned int __atags_pointer __initdata; unsigned int system_rev; EXPORT_SYMBOL(system_rev); +const char *system_serial; +EXPORT_SYMBOL(system_serial); + unsigned int system_serial_low; EXPORT_SYMBOL(system_serial_low); @@ -839,8 +842,25 @@ arch_initcall(customize_machine); static int __init init_machine_late(void) { + struct device_node *root; + int ret; + if (machine_desc->init_late) machine_desc->init_late(); + + root = of_find_node_by_path("/"); + if (root) { + ret = of_property_read_string(root, "serial-number", + &system_serial); + if (ret) + system_serial = NULL; + } + + if (!system_serial) + system_serial = kasprintf(GFP_KERNEL, "%08x%08x", + system_serial_high, + system_serial_low); + return 0; } late_initcall(init_machine_late); @@ -1109,8 +1129,7 @@ static int c_show(struct seq_file *m, void *v) seq_printf(m, "Hardware\t: %s\n", machine_name); seq_printf(m, "Revision\t: %04x\n", system_rev); - seq_printf(m, "Serial\t\t: %08x%08x\n", - system_serial_high, system_serial_low); + seq_printf(m, "Serial\t\t: %s\n", system_serial); return 0; } -- cgit v1.2.3 From 1221ed10f2a56ecdd8ff75f436f52aca5ba0f1d3 Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 4 Apr 2015 17:25:20 +0100 Subject: ARM: cleanup early_paging_init() calling Eliminate the needless nommu version of this function, and get rid of the proc_info_list structure argument - we no longer need this in order to fix up the page table entries. Acked-by: Santosh Shilimkar Tested-by: Murali Karicheri Signed-off-by: Russell King --- arch/arm/kernel/setup.c | 7 ++++--- arch/arm/mm/mmu.c | 6 ++---- arch/arm/mm/nommu.c | 9 --------- 3 files changed, 6 insertions(+), 16 deletions(-) (limited to 'arch/arm/kernel/setup.c') diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 6c777e908a24..979c1c5fe96a 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -75,8 +75,7 @@ __setup("fpe=", fpe_setup); extern void init_default_cache_policy(unsigned long); extern void paging_init(const struct machine_desc *desc); -extern void early_paging_init(const struct machine_desc *, - struct proc_info_list *); +extern void early_paging_init(const struct machine_desc *); extern void sanity_check_meminfo(void); extern enum reboot_mode reboot_mode; extern void setup_dma_zone(const struct machine_desc *desc); @@ -936,7 +935,9 @@ void __init setup_arch(char **cmdline_p) parse_early_param(); - early_paging_init(mdesc, lookup_processor_type(read_cpuid_id())); +#ifdef CONFIG_MMU + early_paging_init(mdesc); +#endif setup_dma_zone(mdesc); sanity_check_meminfo(); arm_memblock_init(mdesc); diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index a5d3180a6886..5aefa9533684 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -1396,8 +1396,7 @@ pgtables_remap lpae_pgtables_remap_asm; * early_paging_init() recreates boot time page table setup, allowing machines * to switch over to a high (>4G) address space on LPAE systems */ -void __init early_paging_init(const struct machine_desc *mdesc, - struct proc_info_list *procinfo) +void __init early_paging_init(const struct machine_desc *mdesc) { pgtables_remap *lpae_pgtables_remap; unsigned long pa_pgd; @@ -1465,8 +1464,7 @@ void __init early_paging_init(const struct machine_desc *mdesc, #else -void __init early_paging_init(const struct machine_desc *mdesc, - struct proc_info_list *procinfo) +void __init early_paging_init(const struct machine_desc *mdesc) { long long offset; diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c index a014dfacd5ca..afd7e05d95f1 100644 --- a/arch/arm/mm/nommu.c +++ b/arch/arm/mm/nommu.c @@ -303,15 +303,6 @@ void __init sanity_check_meminfo(void) memblock_set_current_limit(end); } -/* - * early_paging_init() recreates boot time page table setup, allowing machines - * to switch over to a high (>4G) address space on LPAE systems - */ -void __init early_paging_init(const struct machine_desc *mdesc, - struct proc_info_list *procinfo) -{ -} - /* * paging_init() sets up the page tables, initialises the zone memory * maps, and sets up the zero page, bad page and bad page tables. -- cgit v1.2.3