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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /arch/arm/mach-at91/setup.c
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/arm/mach-at91/setup.c')
-rw-r--r--arch/arm/mach-at91/setup.c307
1 files changed, 307 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
new file mode 100644
index 00000000000..69d3fc4c46f
--- /dev/null
+++ b/arch/arm/mach-at91/setup.c
@@ -0,0 +1,307 @@
+/*
+ * Copyright (C) 2007 Atmel Corporation.
+ * Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
+ *
+ * Under GPLv2
+ */
+
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/mm.h>
+#include <linux/pm.h>
+
+#include <asm/mach/map.h>
+
+#include <mach/hardware.h>
+#include <mach/cpu.h>
+#include <mach/at91_dbgu.h>
+#include <mach/at91_pmc.h>
+#include <mach/at91_shdwc.h>
+
+#include "soc.h"
+#include "generic.h"
+
+struct at91_init_soc __initdata at91_boot_soc;
+
+struct at91_socinfo at91_soc_initdata;
+EXPORT_SYMBOL(at91_soc_initdata);
+
+void __init at91rm9200_set_type(int type)
+{
+ if (type == ARCH_REVISON_9200_PQFP)
+ at91_soc_initdata.subtype = AT91_SOC_RM9200_PQFP;
+ else
+ at91_soc_initdata.subtype = AT91_SOC_RM9200_BGA;
+
+ pr_info("AT91: filled in soc subtype: %s\n",
+ at91_get_soc_subtype(&at91_soc_initdata));
+}
+
+void __init at91_init_irq_default(void)
+{
+ at91_init_interrupts(at91_boot_soc.default_irq_priority);
+}
+
+void __init at91_init_interrupts(unsigned int *priority)
+{
+ /* Initialize the AIC interrupt controller */
+ at91_aic_init(priority);
+
+ /* Enable GPIO interrupts */
+ at91_gpio_irq_setup();
+}
+
+static struct map_desc sram_desc[2] __initdata;
+
+void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
+{
+ struct map_desc *desc = &sram_desc[bank];
+
+ desc->virtual = AT91_IO_VIRT_BASE - length;
+ if (bank > 0)
+ desc->virtual -= sram_desc[bank - 1].length;
+
+ desc->pfn = __phys_to_pfn(base);
+ desc->length = length;
+ desc->type = MT_DEVICE;
+
+ pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n",
+ base, length, desc->virtual);
+
+ iotable_init(desc, 1);
+}
+
+static struct map_desc at91_io_desc __initdata = {
+ .virtual = AT91_VA_BASE_SYS,
+ .pfn = __phys_to_pfn(AT91_BASE_SYS),
+ .length = SZ_16K,
+ .type = MT_DEVICE,
+};
+
+static void __init soc_detect(u32 dbgu_base)
+{
+ u32 cidr, socid;
+
+ cidr = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_CIDR);
+ socid = cidr & ~AT91_CIDR_VERSION;
+
+ switch (socid) {
+ case ARCH_ID_AT91CAP9: {
+#ifdef CONFIG_AT91_PMC_UNIT
+ u32 pmc_ver = at91_sys_read(AT91_PMC_VER);
+
+ if (pmc_ver == ARCH_REVISION_CAP9_B)
+ at91_soc_initdata.subtype = AT91_SOC_CAP9_REV_B;
+ else if (pmc_ver == ARCH_REVISION_CAP9_C)
+ at91_soc_initdata.subtype = AT91_SOC_CAP9_REV_C;
+#endif
+ at91_soc_initdata.type = AT91_SOC_CAP9;
+ at91_boot_soc = at91cap9_soc;
+ break;
+ }
+
+ case ARCH_ID_AT91RM9200:
+ at91_soc_initdata.type = AT91_SOC_RM9200;
+ at91_boot_soc = at91rm9200_soc;
+ break;
+
+ case ARCH_ID_AT91SAM9260:
+ at91_soc_initdata.type = AT91_SOC_SAM9260;
+ at91_boot_soc = at91sam9260_soc;
+ break;
+
+ case ARCH_ID_AT91SAM9261:
+ at91_soc_initdata.type = AT91_SOC_SAM9261;
+ at91_boot_soc = at91sam9261_soc;
+ break;
+
+ case ARCH_ID_AT91SAM9263:
+ at91_soc_initdata.type = AT91_SOC_SAM9263;
+ at91_boot_soc = at91sam9263_soc;
+ break;
+
+ case ARCH_ID_AT91SAM9G20:
+ at91_soc_initdata.type = AT91_SOC_SAM9G20;
+ at91_boot_soc = at91sam9260_soc;
+ break;
+
+ case ARCH_ID_AT91SAM9G45:
+ at91_soc_initdata.type = AT91_SOC_SAM9G45;
+ if (cidr == ARCH_ID_AT91SAM9G45ES)
+ at91_soc_initdata.subtype = AT91_SOC_SAM9G45ES;
+ at91_boot_soc = at91sam9g45_soc;
+ break;
+
+ case ARCH_ID_AT91SAM9RL64:
+ at91_soc_initdata.type = AT91_SOC_SAM9RL;
+ at91_boot_soc = at91sam9rl_soc;
+ break;
+
+ case ARCH_ID_AT91SAM9X5:
+ at91_soc_initdata.type = AT91_SOC_SAM9X5;
+ at91_boot_soc = at91sam9x5_soc;
+ break;
+ }
+
+ /* at91sam9g10 */
+ if ((cidr & ~AT91_CIDR_EXT) == ARCH_ID_AT91SAM9G10) {
+ at91_soc_initdata.type = AT91_SOC_SAM9G10;
+ at91_boot_soc = at91sam9261_soc;
+ }
+ /* at91sam9xe */
+ else if ((cidr & AT91_CIDR_ARCH) == ARCH_FAMILY_AT91SAM9XE) {
+ at91_soc_initdata.type = AT91_SOC_SAM9260;
+ at91_soc_initdata.subtype = AT91_SOC_SAM9XE;
+ at91_boot_soc = at91sam9260_soc;
+ }
+
+ if (!at91_soc_is_detected())
+ return;
+
+ at91_soc_initdata.cidr = cidr;
+
+ /* sub version of soc */
+ at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
+
+ if (at91_soc_initdata.type == AT91_SOC_SAM9G45) {
+ switch (at91_soc_initdata.exid) {
+ case ARCH_EXID_AT91SAM9M10:
+ at91_soc_initdata.subtype = AT91_SOC_SAM9M10;
+ break;
+ case ARCH_EXID_AT91SAM9G46:
+ at91_soc_initdata.subtype = AT91_SOC_SAM9G46;
+ break;
+ case ARCH_EXID_AT91SAM9M11:
+ at91_soc_initdata.subtype = AT91_SOC_SAM9M11;
+ break;
+ }
+ }
+
+ if (at91_soc_initdata.type == AT91_SOC_SAM9X5) {
+ switch (at91_soc_initdata.exid) {
+ case ARCH_EXID_AT91SAM9G15:
+ at91_soc_initdata.subtype = AT91_SOC_SAM9G15;
+ break;
+ case ARCH_EXID_AT91SAM9G35:
+ at91_soc_initdata.subtype = AT91_SOC_SAM9G35;
+ break;
+ case ARCH_EXID_AT91SAM9X35:
+ at91_soc_initdata.subtype = AT91_SOC_SAM9X35;
+ break;
+ case ARCH_EXID_AT91SAM9G25:
+ at91_soc_initdata.subtype = AT91_SOC_SAM9G25;
+ break;
+ case ARCH_EXID_AT91SAM9X25:
+ at91_soc_initdata.subtype = AT91_SOC_SAM9X25;
+ break;
+ }
+ }
+}
+
+static const char *soc_name[] = {
+ [AT91_SOC_RM9200] = "at91rm9200",
+ [AT91_SOC_CAP9] = "at91cap9",
+ [AT91_SOC_SAM9260] = "at91sam9260",
+ [AT91_SOC_SAM9261] = "at91sam9261",
+ [AT91_SOC_SAM9263] = "at91sam9263",
+ [AT91_SOC_SAM9G10] = "at91sam9g10",
+ [AT91_SOC_SAM9G20] = "at91sam9g20",
+ [AT91_SOC_SAM9G45] = "at91sam9g45",
+ [AT91_SOC_SAM9RL] = "at91sam9rl",
+ [AT91_SOC_SAM9X5] = "at91sam9x5",
+ [AT91_SOC_NONE] = "Unknown"
+};
+
+const char *at91_get_soc_type(struct at91_socinfo *c)
+{
+ return soc_name[c->type];
+}
+EXPORT_SYMBOL(at91_get_soc_type);
+
+static const char *soc_subtype_name[] = {
+ [AT91_SOC_RM9200_BGA] = "at91rm9200 BGA",
+ [AT91_SOC_RM9200_PQFP] = "at91rm9200 PQFP",
+ [AT91_SOC_CAP9_REV_B] = "at91cap9 revB",
+ [AT91_SOC_CAP9_REV_C] = "at91cap9 revC",
+ [AT91_SOC_SAM9XE] = "at91sam9xe",
+ [AT91_SOC_SAM9G45ES] = "at91sam9g45es",
+ [AT91_SOC_SAM9M10] = "at91sam9m10",
+ [AT91_SOC_SAM9G46] = "at91sam9g46",
+ [AT91_SOC_SAM9M11] = "at91sam9m11",
+ [AT91_SOC_SAM9G15] = "at91sam9g15",
+ [AT91_SOC_SAM9G35] = "at91sam9g35",
+ [AT91_SOC_SAM9X35] = "at91sam9x35",
+ [AT91_SOC_SAM9G25] = "at91sam9g25",
+ [AT91_SOC_SAM9X25] = "at91sam9x25",
+ [AT91_SOC_SUBTYPE_NONE] = "Unknown"
+};
+
+const char *at91_get_soc_subtype(struct at91_socinfo *c)
+{
+ return soc_subtype_name[c->subtype];
+}
+EXPORT_SYMBOL(at91_get_soc_subtype);
+
+void __init at91_map_io(void)
+{
+ /* Map peripherals */
+ iotable_init(&at91_io_desc, 1);
+
+ at91_soc_initdata.type = AT91_SOC_NONE;
+ at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
+
+ soc_detect(AT91_BASE_DBGU0);
+ if (!at91_soc_is_detected())
+ soc_detect(AT91_BASE_DBGU1);
+
+ if (!at91_soc_is_detected())
+ panic("AT91: Impossible to detect the SOC type");
+
+ pr_info("AT91: Detected soc type: %s\n",
+ at91_get_soc_type(&at91_soc_initdata));
+ pr_info("AT91: Detected soc subtype: %s\n",
+ at91_get_soc_subtype(&at91_soc_initdata));
+
+ if (!at91_soc_is_enabled())
+ panic("AT91: Soc not enabled");
+
+ if (at91_boot_soc.map_io)
+ at91_boot_soc.map_io();
+}
+
+void __iomem *at91_shdwc_base = NULL;
+
+static void at91sam9_poweroff(void)
+{
+ at91_shdwc_write(AT91_SHDW_CR, AT91_SHDW_KEY | AT91_SHDW_SHDW);
+}
+
+void __init at91_ioremap_shdwc(u32 base_addr)
+{
+ at91_shdwc_base = ioremap(base_addr, 16);
+ if (!at91_shdwc_base)
+ panic("Impossible to ioremap at91_shdwc_base\n");
+ pm_power_off = at91sam9_poweroff;
+}
+
+void __iomem *at91_rstc_base;
+
+void __init at91_ioremap_rstc(u32 base_addr)
+{
+ at91_rstc_base = ioremap(base_addr, 16);
+ if (!at91_rstc_base)
+ panic("Impossible to ioremap at91_rstc_base\n");
+}
+
+void __init at91_initialize(unsigned long main_clock)
+{
+ at91_boot_soc.ioremap_registers();
+
+ /* Init clock subsystem */
+ at91_clock_init(main_clock);
+
+ /* Register the processor-specific clocks */
+ at91_boot_soc.register_clocks();
+
+ at91_boot_soc.init();
+}