diff options
Diffstat (limited to 'arch/arm/mach-ux500/id.c')
| -rw-r--r-- | arch/arm/mach-ux500/id.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/arch/arm/mach-ux500/id.c b/arch/arm/mach-ux500/id.c index 15a0f63b2e2..4d12f826386 100644 --- a/arch/arm/mach-ux500/id.c +++ b/arch/arm/mach-ux500/id.c @@ -8,6 +8,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/io.h> +#include <linux/export.h> #include <asm/cputype.h> #include <asm/tlbflush.h> @@ -18,6 +19,7 @@ #include <mach/setup.h> struct dbx500_asic_id dbx500_id; +EXPORT_SYMBOL(dbx500_id); static unsigned int ux500_read_asicid(phys_addr_t addr) { @@ -38,6 +40,25 @@ static unsigned int ux500_read_asicid(phys_addr_t addr) return readl(__io_address(addr)); } +static unsigned int u9540_read_asicid(phys_addr_t addr) +{ + phys_addr_t base = addr & ~0xfff; + struct map_desc desc = { + .virtual = IO_ADDRESS_DB9540_ROM(base), + .pfn = __phys_to_pfn(base), + .length = SZ_16K, + .type = MT_DEVICE, + }; + + iotable_init(&desc, 1); + + /* As in devicemaps_init() */ + local_flush_tlb_all(); + flush_cache_all(); + + return readl(__io_address_db9540_rom(addr)); +} + static void ux500_print_soc_info(unsigned int asicid) { unsigned int rev = dbx500_revision(); @@ -66,7 +87,9 @@ static unsigned int partnumber(unsigned int asicid) * DB8500v1.1 0x411fc091 0x9001FFF4 0x008500A1 * DB8500v2 0x412fc091 0x9001DBF4 0x008500B0 * DB8520v2.2 0x412fc091 0x9001DBF4 0x008500B2 + * AP9500 0x412fc091 0x9001DBF4 0x008500B2 * DB5500v1 0x412fc091 0x9001FFF4 0x005500A0 + * DB9540 0x413fc090 0xFFFFDBF4 0x009540xx */ void __init ux500_map_io(void) @@ -81,7 +104,7 @@ void __init ux500_map_io(void) addr = 0x9001FFF4; break; - case 0x412fc091: /* DB8520 / DB8500v2 / DB5500v1 */ + case 0x412fc091: /* DB8520 / DB8500v2 / DB5500v1 / AP9500 */ asicid = ux500_read_asicid(0x9001DBF4); if (partnumber(asicid) == 0x8500 || partnumber(asicid) == 0x8520) @@ -91,6 +114,12 @@ void __init ux500_map_io(void) /* DB5500v1 */ addr = 0x9001FFF4; break; + + case 0x413fc090: /* DB9540 */ + addr = 0xFFFFDBF4; + asicid = u9540_read_asicid(addr); + addr = 0; + break; } if (addr) |