diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-integrator/integrator_ap.c | 58 |
1 files changed, 38 insertions, 20 deletions
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c index 7d84080f9aa3..becba430a246 100644 --- a/arch/arm/mach-integrator/integrator_ap.c +++ b/arch/arm/mach-integrator/integrator_ap.c @@ -62,7 +62,10 @@ #include "common.h" -/* +/* Base address to the AP system controller */ +static void __iomem *ap_syscon_base; + +/* * All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx * is the (PA >> 12). * @@ -70,7 +73,6 @@ * just for now). */ #define VA_IC_BASE __io_address(INTEGRATOR_IC_BASE) -#define VA_SC_BASE __io_address(INTEGRATOR_SC_BASE) #define VA_EBI_BASE __io_address(INTEGRATOR_EBI_BASE) #define VA_CMIC_BASE __io_address(INTEGRATOR_HDR_IC) @@ -99,11 +101,6 @@ static struct map_desc ap_io_desc[] __initdata = { .length = SZ_4K, .type = MT_DEVICE }, { - .virtual = IO_ADDRESS(INTEGRATOR_SC_BASE), - .pfn = __phys_to_pfn(INTEGRATOR_SC_BASE), - .length = SZ_4K, - .type = MT_DEVICE - }, { .virtual = IO_ADDRESS(INTEGRATOR_EBI_BASE), .pfn = __phys_to_pfn(INTEGRATOR_EBI_BASE), .length = SZ_4K, @@ -203,8 +200,6 @@ device_initcall(irq_syscore_init); /* * Flash handling. */ -#define SC_CTRLC (VA_SC_BASE + INTEGRATOR_SC_CTRLC_OFFSET) -#define SC_CTRLS (VA_SC_BASE + INTEGRATOR_SC_CTRLS_OFFSET) #define EBI_CSR1 (VA_EBI_BASE + INTEGRATOR_EBI_CSR1_OFFSET) #define EBI_LOCK (VA_EBI_BASE + INTEGRATOR_EBI_LOCK_OFFSET) @@ -212,7 +207,8 @@ static int ap_flash_init(struct platform_device *dev) { u32 tmp; - writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP, SC_CTRLC); + writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP, + ap_syscon_base + INTEGRATOR_SC_CTRLC_OFFSET); tmp = readl(EBI_CSR1) | INTEGRATOR_EBI_WRITE_ENABLE; writel(tmp, EBI_CSR1); @@ -229,7 +225,8 @@ static void ap_flash_exit(struct platform_device *dev) { u32 tmp; - writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP, SC_CTRLC); + writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP, + ap_syscon_base + INTEGRATOR_SC_CTRLC_OFFSET); tmp = readl(EBI_CSR1) & ~INTEGRATOR_EBI_WRITE_ENABLE; writel(tmp, EBI_CSR1); @@ -243,9 +240,12 @@ static void ap_flash_exit(struct platform_device *dev) static void ap_flash_set_vpp(struct platform_device *pdev, int on) { - void __iomem *reg = on ? SC_CTRLS : SC_CTRLC; - - writel(INTEGRATOR_SC_CTRL_nFLVPPEN, reg); + if (on) + writel(INTEGRATOR_SC_CTRL_nFLVPPEN, + ap_syscon_base + INTEGRATOR_SC_CTRLS_OFFSET); + else + writel(INTEGRATOR_SC_CTRL_nFLVPPEN, + ap_syscon_base + INTEGRATOR_SC_CTRLC_OFFSET); } static struct physmap_flash_data ap_flash_data = { @@ -464,9 +464,6 @@ static struct of_dev_auxdata ap_auxdata_lookup[] __initdata = { { /* sentinel */ }, }; -/* Base address to the AP system controller */ -static void __iomem *ap_syscon_base; - static void __init ap_init_of(void) { unsigned long sc_dec; @@ -523,7 +520,7 @@ static void __init ap_init_of(void) of_platform_populate(root, of_default_bus_match_table, ap_auxdata_lookup, parent); - sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET); + sc_dec = readl(ap_syscon_base + INTEGRATOR_SC_DEC_OFFSET); for (i = 0; i < 4; i++) { struct lm_device *lmdev; @@ -567,6 +564,27 @@ MACHINE_END #ifdef CONFIG_ATAGS /* + * For the ATAG boot some static mappings are needed. This will + * go away with the ATAG support down the road. + */ + +static struct map_desc ap_io_desc_atag[] __initdata = { + { + .virtual = IO_ADDRESS(INTEGRATOR_SC_BASE), + .pfn = __phys_to_pfn(INTEGRATOR_SC_BASE), + .length = SZ_4K, + .type = MT_DEVICE + }, +}; + +static void __init ap_map_io_atag(void) +{ + iotable_init(ap_io_desc_atag, ARRAY_SIZE(ap_io_desc_atag)); + ap_syscon_base = __io_address(INTEGRATOR_SC_BASE); + ap_map_io(); +} + +/* * This is where non-devicetree initialization code is collected and stashed * for eventual deletion. */ @@ -634,7 +652,7 @@ static void __init ap_init(void) platform_device_register(&cfi_flash_device); - sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET); + sc_dec = readl(ap_syscon_base + INTEGRATOR_SC_DEC_OFFSET); for (i = 0; i < 4; i++) { struct lm_device *lmdev; @@ -661,7 +679,7 @@ MACHINE_START(INTEGRATOR, "ARM-Integrator") /* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */ .atag_offset = 0x100, .reserve = integrator_reserve, - .map_io = ap_map_io, + .map_io = ap_map_io_atag, .nr_irqs = NR_IRQS_INTEGRATOR_AP, .init_early = ap_init_early, .init_irq = ap_init_irq, |