513 lines
13 KiB
C
513 lines
13 KiB
C
/*
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* Copyright (C) 2007 Atmel Corporation.
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* Copyright (C) 2011 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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*
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* Under GPLv2
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*/
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#define pr_fmt(fmt) "AT91: " fmt
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#include <linux/module.h>
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#include <linux/io.h>
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#include <linux/mm.h>
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#include <linux/pm.h>
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#include <linux/of_address.h>
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#include <linux/pinctrl/machine.h>
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#include <linux/clk/at91_pmc.h>
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#include <asm/system_misc.h>
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#include <asm/mach/map.h>
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#include <mach/hardware.h>
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#include <mach/cpu.h>
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#include <mach/at91_dbgu.h>
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#include "soc.h"
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#include "generic.h"
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#include "pm.h"
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struct at91_init_soc __initdata at91_boot_soc;
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struct at91_socinfo at91_soc_initdata;
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EXPORT_SYMBOL(at91_soc_initdata);
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void __init at91rm9200_set_type(int type)
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{
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if (type == ARCH_REVISON_9200_PQFP)
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at91_soc_initdata.subtype = AT91_SOC_RM9200_PQFP;
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else
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at91_soc_initdata.subtype = AT91_SOC_RM9200_BGA;
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pr_info("filled in soc subtype: %s\n",
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at91_get_soc_subtype(&at91_soc_initdata));
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}
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void __init at91_init_irq_default(void)
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{
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at91_init_interrupts(at91_boot_soc.default_irq_priority);
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}
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void __init at91_init_interrupts(unsigned int *priority)
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{
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/* Initialize the AIC interrupt controller */
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if (IS_ENABLED(CONFIG_OLD_IRQ_AT91))
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at91_aic_init(priority, at91_boot_soc.extern_irq);
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/* Enable GPIO interrupts */
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at91_gpio_irq_setup();
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}
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void __iomem *at91_ramc_base[2];
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EXPORT_SYMBOL_GPL(at91_ramc_base);
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void __init at91_ioremap_ramc(int id, u32 addr, u32 size)
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{
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if (id < 0 || id > 1) {
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pr_emerg("Wrong RAM controller id (%d), cannot continue\n", id);
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BUG();
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}
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at91_ramc_base[id] = ioremap(addr, size);
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if (!at91_ramc_base[id])
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panic(pr_fmt("Impossible to ioremap ramc.%d 0x%x\n"), id, addr);
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}
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static struct map_desc sram_desc[2] __initdata;
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void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
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{
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struct map_desc *desc = &sram_desc[bank];
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desc->virtual = (unsigned long)AT91_IO_VIRT_BASE - length;
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if (bank > 0)
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desc->virtual -= sram_desc[bank - 1].length;
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desc->pfn = __phys_to_pfn(base);
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desc->length = length;
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desc->type = MT_MEMORY_RWX_NONCACHED;
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pr_info("sram at 0x%lx of 0x%x mapped at 0x%lx\n",
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base, length, desc->virtual);
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iotable_init(desc, 1);
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}
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static struct map_desc at91_io_desc __initdata __maybe_unused = {
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.virtual = (unsigned long)AT91_VA_BASE_SYS,
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.pfn = __phys_to_pfn(AT91_BASE_SYS),
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.length = SZ_16K,
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.type = MT_DEVICE,
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};
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static struct map_desc at91_alt_io_desc __initdata __maybe_unused = {
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.virtual = (unsigned long)AT91_ALT_VA_BASE_SYS,
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.pfn = __phys_to_pfn(AT91_ALT_BASE_SYS),
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.length = 24 * SZ_1K,
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.type = MT_DEVICE,
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};
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static void __init soc_detect(u32 dbgu_base)
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{
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u32 cidr, socid;
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cidr = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_CIDR);
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socid = cidr & ~AT91_CIDR_VERSION;
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switch (socid) {
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case ARCH_ID_AT91RM9200:
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at91_soc_initdata.type = AT91_SOC_RM9200;
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if (at91_soc_initdata.subtype == AT91_SOC_SUBTYPE_UNKNOWN)
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at91_soc_initdata.subtype = AT91_SOC_RM9200_BGA;
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at91_boot_soc = at91rm9200_soc;
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break;
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case ARCH_ID_AT91SAM9260:
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at91_soc_initdata.type = AT91_SOC_SAM9260;
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at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
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at91_boot_soc = at91sam9260_soc;
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break;
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case ARCH_ID_AT91SAM9261:
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at91_soc_initdata.type = AT91_SOC_SAM9261;
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at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
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at91_boot_soc = at91sam9261_soc;
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break;
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case ARCH_ID_AT91SAM9263:
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at91_soc_initdata.type = AT91_SOC_SAM9263;
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at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
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at91_boot_soc = at91sam9263_soc;
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break;
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case ARCH_ID_AT91SAM9G20:
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at91_soc_initdata.type = AT91_SOC_SAM9G20;
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at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
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at91_boot_soc = at91sam9260_soc;
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break;
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case ARCH_ID_AT91SAM9G45:
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at91_soc_initdata.type = AT91_SOC_SAM9G45;
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if (cidr == ARCH_ID_AT91SAM9G45ES)
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at91_soc_initdata.subtype = AT91_SOC_SAM9G45ES;
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at91_boot_soc = at91sam9g45_soc;
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break;
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case ARCH_ID_AT91SAM9RL64:
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at91_soc_initdata.type = AT91_SOC_SAM9RL;
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at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
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at91_boot_soc = at91sam9rl_soc;
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break;
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case ARCH_ID_AT91SAM9X5:
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at91_soc_initdata.type = AT91_SOC_SAM9X5;
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at91_boot_soc = at91sam9x5_soc;
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break;
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case ARCH_ID_AT91SAM9N12:
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at91_soc_initdata.type = AT91_SOC_SAM9N12;
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at91_boot_soc = at91sam9n12_soc;
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break;
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case ARCH_ID_SAMA5:
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at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
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if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D3) {
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at91_soc_initdata.type = AT91_SOC_SAMA5D3;
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at91_boot_soc = sama5d3_soc;
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}
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break;
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}
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/* at91sam9g10 */
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if ((socid & ~AT91_CIDR_EXT) == ARCH_ID_AT91SAM9G10) {
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at91_soc_initdata.type = AT91_SOC_SAM9G10;
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at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_NONE;
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at91_boot_soc = at91sam9261_soc;
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}
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/* at91sam9xe */
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else if ((cidr & AT91_CIDR_ARCH) == ARCH_FAMILY_AT91SAM9XE) {
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at91_soc_initdata.type = AT91_SOC_SAM9260;
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at91_soc_initdata.subtype = AT91_SOC_SAM9XE;
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at91_boot_soc = at91sam9260_soc;
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}
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if (!at91_soc_is_detected())
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return;
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at91_soc_initdata.cidr = cidr;
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/* sub version of soc */
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if (!at91_soc_initdata.exid)
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at91_soc_initdata.exid = __raw_readl(AT91_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
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if (at91_soc_initdata.type == AT91_SOC_SAM9G45) {
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switch (at91_soc_initdata.exid) {
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case ARCH_EXID_AT91SAM9M10:
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at91_soc_initdata.subtype = AT91_SOC_SAM9M10;
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break;
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case ARCH_EXID_AT91SAM9G46:
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at91_soc_initdata.subtype = AT91_SOC_SAM9G46;
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break;
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case ARCH_EXID_AT91SAM9M11:
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at91_soc_initdata.subtype = AT91_SOC_SAM9M11;
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break;
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}
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}
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if (at91_soc_initdata.type == AT91_SOC_SAM9X5) {
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switch (at91_soc_initdata.exid) {
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case ARCH_EXID_AT91SAM9G15:
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at91_soc_initdata.subtype = AT91_SOC_SAM9G15;
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break;
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case ARCH_EXID_AT91SAM9G35:
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at91_soc_initdata.subtype = AT91_SOC_SAM9G35;
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break;
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case ARCH_EXID_AT91SAM9X35:
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at91_soc_initdata.subtype = AT91_SOC_SAM9X35;
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break;
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case ARCH_EXID_AT91SAM9G25:
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at91_soc_initdata.subtype = AT91_SOC_SAM9G25;
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break;
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case ARCH_EXID_AT91SAM9X25:
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at91_soc_initdata.subtype = AT91_SOC_SAM9X25;
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break;
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}
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}
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if (at91_soc_initdata.type == AT91_SOC_SAMA5D3) {
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switch (at91_soc_initdata.exid) {
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case ARCH_EXID_SAMA5D31:
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at91_soc_initdata.subtype = AT91_SOC_SAMA5D31;
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break;
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case ARCH_EXID_SAMA5D33:
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at91_soc_initdata.subtype = AT91_SOC_SAMA5D33;
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break;
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case ARCH_EXID_SAMA5D34:
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at91_soc_initdata.subtype = AT91_SOC_SAMA5D34;
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break;
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case ARCH_EXID_SAMA5D35:
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at91_soc_initdata.subtype = AT91_SOC_SAMA5D35;
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break;
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case ARCH_EXID_SAMA5D36:
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at91_soc_initdata.subtype = AT91_SOC_SAMA5D36;
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break;
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}
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}
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}
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static void __init alt_soc_detect(u32 dbgu_base)
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{
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u32 cidr, socid;
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/* SoC ID */
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cidr = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_CIDR);
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socid = cidr & ~AT91_CIDR_VERSION;
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switch (socid) {
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case ARCH_ID_SAMA5:
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at91_soc_initdata.exid = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
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if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D3) {
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at91_soc_initdata.type = AT91_SOC_SAMA5D3;
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at91_boot_soc = sama5d3_soc;
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} else if (at91_soc_initdata.exid & ARCH_EXID_SAMA5D4) {
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at91_soc_initdata.type = AT91_SOC_SAMA5D4;
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at91_boot_soc = sama5d4_soc;
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}
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break;
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}
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if (!at91_soc_is_detected())
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return;
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at91_soc_initdata.cidr = cidr;
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/* sub version of soc */
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if (!at91_soc_initdata.exid)
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at91_soc_initdata.exid = __raw_readl(AT91_ALT_IO_P2V(dbgu_base) + AT91_DBGU_EXID);
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if (at91_soc_initdata.type == AT91_SOC_SAMA5D4) {
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switch (at91_soc_initdata.exid) {
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case ARCH_EXID_SAMA5D41:
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at91_soc_initdata.subtype = AT91_SOC_SAMA5D41;
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break;
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case ARCH_EXID_SAMA5D42:
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at91_soc_initdata.subtype = AT91_SOC_SAMA5D42;
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break;
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case ARCH_EXID_SAMA5D43:
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at91_soc_initdata.subtype = AT91_SOC_SAMA5D43;
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break;
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case ARCH_EXID_SAMA5D44:
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at91_soc_initdata.subtype = AT91_SOC_SAMA5D44;
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break;
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}
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}
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}
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static const char *soc_name[] = {
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[AT91_SOC_RM9200] = "at91rm9200",
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[AT91_SOC_SAM9260] = "at91sam9260",
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[AT91_SOC_SAM9261] = "at91sam9261",
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[AT91_SOC_SAM9263] = "at91sam9263",
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[AT91_SOC_SAM9G10] = "at91sam9g10",
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[AT91_SOC_SAM9G20] = "at91sam9g20",
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[AT91_SOC_SAM9G45] = "at91sam9g45",
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[AT91_SOC_SAM9RL] = "at91sam9rl",
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[AT91_SOC_SAM9X5] = "at91sam9x5",
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[AT91_SOC_SAM9N12] = "at91sam9n12",
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[AT91_SOC_SAMA5D3] = "sama5d3",
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[AT91_SOC_SAMA5D4] = "sama5d4",
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[AT91_SOC_UNKNOWN] = "Unknown",
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};
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const char *at91_get_soc_type(struct at91_socinfo *c)
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{
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return soc_name[c->type];
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}
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EXPORT_SYMBOL(at91_get_soc_type);
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static const char *soc_subtype_name[] = {
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[AT91_SOC_RM9200_BGA] = "at91rm9200 BGA",
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[AT91_SOC_RM9200_PQFP] = "at91rm9200 PQFP",
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[AT91_SOC_SAM9XE] = "at91sam9xe",
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[AT91_SOC_SAM9G45ES] = "at91sam9g45es",
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[AT91_SOC_SAM9M10] = "at91sam9m10",
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[AT91_SOC_SAM9G46] = "at91sam9g46",
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[AT91_SOC_SAM9M11] = "at91sam9m11",
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[AT91_SOC_SAM9G15] = "at91sam9g15",
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[AT91_SOC_SAM9G35] = "at91sam9g35",
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[AT91_SOC_SAM9X35] = "at91sam9x35",
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[AT91_SOC_SAM9G25] = "at91sam9g25",
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[AT91_SOC_SAM9X25] = "at91sam9x25",
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[AT91_SOC_SAMA5D31] = "sama5d31",
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[AT91_SOC_SAMA5D33] = "sama5d33",
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[AT91_SOC_SAMA5D34] = "sama5d34",
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[AT91_SOC_SAMA5D35] = "sama5d35",
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[AT91_SOC_SAMA5D36] = "sama5d36",
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[AT91_SOC_SAMA5D41] = "sama5d41",
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[AT91_SOC_SAMA5D42] = "sama5d42",
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[AT91_SOC_SAMA5D43] = "sama5d43",
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[AT91_SOC_SAMA5D44] = "sama5d44",
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[AT91_SOC_SUBTYPE_NONE] = "None",
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[AT91_SOC_SUBTYPE_UNKNOWN] = "Unknown",
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};
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const char *at91_get_soc_subtype(struct at91_socinfo *c)
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{
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return soc_subtype_name[c->subtype];
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}
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EXPORT_SYMBOL(at91_get_soc_subtype);
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void __init at91_map_io(void)
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{
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/* Map peripherals */
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iotable_init(&at91_io_desc, 1);
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at91_soc_initdata.type = AT91_SOC_UNKNOWN;
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at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_UNKNOWN;
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soc_detect(AT91_BASE_DBGU0);
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if (!at91_soc_is_detected())
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soc_detect(AT91_BASE_DBGU1);
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if (!at91_soc_is_detected())
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panic(pr_fmt("Impossible to detect the SOC type"));
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pr_info("Detected soc type: %s\n",
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at91_get_soc_type(&at91_soc_initdata));
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if (at91_soc_initdata.subtype != AT91_SOC_SUBTYPE_NONE)
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pr_info("Detected soc subtype: %s\n",
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at91_get_soc_subtype(&at91_soc_initdata));
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if (!at91_soc_is_enabled())
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panic(pr_fmt("Soc not enabled"));
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if (at91_boot_soc.map_io)
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at91_boot_soc.map_io();
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}
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void __init at91_alt_map_io(void)
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{
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/* Map peripherals */
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iotable_init(&at91_alt_io_desc, 1);
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at91_soc_initdata.type = AT91_SOC_UNKNOWN;
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at91_soc_initdata.subtype = AT91_SOC_SUBTYPE_UNKNOWN;
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alt_soc_detect(AT91_BASE_DBGU2);
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if (!at91_soc_is_detected())
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panic("AT91: Impossible to detect the SOC type");
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pr_info("AT91: Detected soc type: %s\n",
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at91_get_soc_type(&at91_soc_initdata));
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if (at91_soc_initdata.subtype != AT91_SOC_SUBTYPE_NONE)
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pr_info("AT91: Detected soc subtype: %s\n",
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at91_get_soc_subtype(&at91_soc_initdata));
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if (!at91_soc_is_enabled())
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panic("AT91: Soc not enabled");
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if (at91_boot_soc.map_io)
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at91_boot_soc.map_io();
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}
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void __iomem *at91_matrix_base;
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EXPORT_SYMBOL_GPL(at91_matrix_base);
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void __init at91_ioremap_matrix(u32 base_addr)
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{
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at91_matrix_base = ioremap(base_addr, 512);
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if (!at91_matrix_base)
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panic(pr_fmt("Impossible to ioremap at91_matrix_base\n"));
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}
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#if defined(CONFIG_OF) && !defined(CONFIG_ARCH_AT91X40)
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static struct of_device_id ramc_ids[] = {
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{ .compatible = "atmel,at91rm9200-sdramc", .data = at91rm9200_standby },
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{ .compatible = "atmel,at91sam9260-sdramc", .data = at91sam9_sdram_standby },
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{ .compatible = "atmel,at91sam9g45-ddramc", .data = at91_ddr_standby },
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{ .compatible = "atmel,sama5d3-ddramc", .data = at91_ddr_standby },
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{ /*sentinel*/ }
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};
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static void at91_dt_ramc(void)
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{
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struct device_node *np;
|
|
const struct of_device_id *of_id;
|
|
int idx = 0;
|
|
const void *standby = NULL;
|
|
|
|
for_each_matching_node_and_match(np, ramc_ids, &of_id) {
|
|
at91_ramc_base[idx] = of_iomap(np, 0);
|
|
if (!at91_ramc_base[idx])
|
|
panic(pr_fmt("unable to map ramc[%d] cpu registers\n"), idx);
|
|
|
|
if (!standby)
|
|
standby = of_id->data;
|
|
|
|
idx++;
|
|
}
|
|
|
|
if (!idx)
|
|
panic(pr_fmt("unable to find compatible ram controller node in dtb\n"));
|
|
|
|
if (!standby) {
|
|
pr_warn("ramc no standby function available\n");
|
|
return;
|
|
}
|
|
|
|
at91_pm_set_standby(standby);
|
|
}
|
|
|
|
void __init at91rm9200_dt_initialize(void)
|
|
{
|
|
at91_dt_ramc();
|
|
|
|
/* Init clock subsystem */
|
|
at91_dt_clock_init();
|
|
|
|
/* Register the processor-specific clocks */
|
|
if (at91_boot_soc.register_clocks)
|
|
at91_boot_soc.register_clocks();
|
|
|
|
at91_boot_soc.init();
|
|
}
|
|
|
|
void __init at91_dt_initialize(void)
|
|
{
|
|
at91_dt_ramc();
|
|
|
|
/* Init clock subsystem */
|
|
at91_dt_clock_init();
|
|
|
|
/* Register the processor-specific clocks */
|
|
if (at91_boot_soc.register_clocks)
|
|
at91_boot_soc.register_clocks();
|
|
|
|
if (at91_boot_soc.init)
|
|
at91_boot_soc.init();
|
|
}
|
|
#endif
|
|
|
|
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();
|
|
|
|
pinctrl_provide_dummies();
|
|
}
|
|
|
|
void __init at91_register_devices(void)
|
|
{
|
|
at91_boot_soc.register_devices();
|
|
}
|
|
|
|
void __init at91_init_time(void)
|
|
{
|
|
at91_boot_soc.init_time();
|
|
}
|