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- /*
- * linux/arch/mips/txx9/generic/setup.c
- *
- * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
- * and RBTX49xx patch from CELF patch archive.
- *
- * 2003-2005 (c) MontaVista Software, Inc.
- * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
- #include <linux/init.h>
- #include <linux/kernel.h>
- #include <linux/types.h>
- #include <linux/interrupt.h>
- #include <linux/string.h>
- #include <linux/module.h>
- #include <linux/clk.h>
- #include <linux/err.h>
- #include <linux/gpio.h>
- #include <asm/bootinfo.h>
- #include <asm/time.h>
- #include <asm/txx9/generic.h>
- #ifdef CONFIG_CPU_TX49XX
- #include <asm/txx9/tx4938.h>
- #endif
- /* EBUSC settings of TX4927, etc. */
- struct resource txx9_ce_res[8];
- static char txx9_ce_res_name[8][4]; /* "CEn" */
- /* pcode, internal register */
- unsigned int txx9_pcode;
- char txx9_pcode_str[8];
- static struct resource txx9_reg_res = {
- .name = txx9_pcode_str,
- .flags = IORESOURCE_MEM,
- };
- void __init
- txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size)
- {
- int i;
- for (i = 0; i < ARRAY_SIZE(txx9_ce_res); i++) {
- sprintf(txx9_ce_res_name[i], "CE%d", i);
- txx9_ce_res[i].flags = IORESOURCE_MEM;
- txx9_ce_res[i].name = txx9_ce_res_name[i];
- }
- sprintf(txx9_pcode_str, "TX%x", pcode);
- if (base) {
- txx9_reg_res.start = base & 0xfffffffffULL;
- txx9_reg_res.end = (base & 0xfffffffffULL) + (size - 1);
- request_resource(&iomem_resource, &txx9_reg_res);
- }
- }
- /* clocks */
- unsigned int txx9_master_clock;
- unsigned int txx9_cpu_clock;
- unsigned int txx9_gbus_clock;
- int txx9_ccfg_toeon __initdata = 1;
- /* Minimum CLK support */
- struct clk *clk_get(struct device *dev, const char *id)
- {
- if (!strcmp(id, "spi-baseclk"))
- return (struct clk *)((unsigned long)txx9_gbus_clock / 2 / 4);
- if (!strcmp(id, "imbus_clk"))
- return (struct clk *)((unsigned long)txx9_gbus_clock / 2);
- return ERR_PTR(-ENOENT);
- }
- EXPORT_SYMBOL(clk_get);
- int clk_enable(struct clk *clk)
- {
- return 0;
- }
- EXPORT_SYMBOL(clk_enable);
- void clk_disable(struct clk *clk)
- {
- }
- EXPORT_SYMBOL(clk_disable);
- unsigned long clk_get_rate(struct clk *clk)
- {
- return (unsigned long)clk;
- }
- EXPORT_SYMBOL(clk_get_rate);
- void clk_put(struct clk *clk)
- {
- }
- EXPORT_SYMBOL(clk_put);
- /* GPIO support */
- #ifdef CONFIG_GENERIC_GPIO
- int gpio_to_irq(unsigned gpio)
- {
- return -EINVAL;
- }
- EXPORT_SYMBOL(gpio_to_irq);
- int irq_to_gpio(unsigned irq)
- {
- return -EINVAL;
- }
- EXPORT_SYMBOL(irq_to_gpio);
- #endif
- extern struct txx9_board_vec jmr3927_vec;
- extern struct txx9_board_vec rbtx4927_vec;
- extern struct txx9_board_vec rbtx4937_vec;
- extern struct txx9_board_vec rbtx4938_vec;
- struct txx9_board_vec *txx9_board_vec __initdata;
- static char txx9_system_type[32];
- void __init prom_init_cmdline(void)
- {
- int argc = (int)fw_arg0;
- char **argv = (char **)fw_arg1;
- int i; /* Always ignore the "-c" at argv[0] */
- #ifdef CONFIG_64BIT
- char *fixed_argv[32];
- for (i = 0; i < argc; i++)
- fixed_argv[i] = (char *)(long)(*((__s32 *)argv + i));
- argv = fixed_argv;
- #endif
- /* ignore all built-in args if any f/w args given */
- if (argc > 1)
- *arcs_cmdline = '\0';
- for (i = 1; i < argc; i++) {
- if (i != 1)
- strcat(arcs_cmdline, " ");
- strcat(arcs_cmdline, argv[i]);
- }
- }
- void __init prom_init(void)
- {
- #ifdef CONFIG_CPU_TX39XX
- txx9_board_vec = &jmr3927_vec;
- #endif
- #ifdef CONFIG_CPU_TX49XX
- switch (TX4938_REV_PCODE()) {
- #ifdef CONFIG_TOSHIBA_RBTX4927
- case 0x4927:
- txx9_board_vec = &rbtx4927_vec;
- break;
- case 0x4937:
- txx9_board_vec = &rbtx4937_vec;
- break;
- #endif
- #ifdef CONFIG_TOSHIBA_RBTX4938
- case 0x4938:
- txx9_board_vec = &rbtx4938_vec;
- break;
- #endif
- }
- #endif
- strcpy(txx9_system_type, txx9_board_vec->system);
- txx9_board_vec->prom_init();
- }
- void __init prom_free_prom_memory(void)
- {
- }
- const char *get_system_type(void)
- {
- return txx9_system_type;
- }
- char * __init prom_getcmdline(void)
- {
- return &(arcs_cmdline[0]);
- }
- /* wrappers */
- void __init plat_mem_setup(void)
- {
- ioport_resource.start = 0;
- ioport_resource.end = ~0UL; /* no limit */
- iomem_resource.start = 0;
- iomem_resource.end = ~0UL; /* no limit */
- txx9_board_vec->mem_setup();
- }
- void __init arch_init_irq(void)
- {
- txx9_board_vec->irq_setup();
- }
- void __init plat_time_init(void)
- {
- txx9_board_vec->time_init();
- }
- static int __init _txx9_arch_init(void)
- {
- if (txx9_board_vec->arch_init)
- txx9_board_vec->arch_init();
- return 0;
- }
- arch_initcall(_txx9_arch_init);
- static int __init _txx9_device_init(void)
- {
- if (txx9_board_vec->device_init)
- txx9_board_vec->device_init();
- return 0;
- }
- device_initcall(_txx9_device_init);
- int (*txx9_irq_dispatch)(int pending);
- asmlinkage void plat_irq_dispatch(void)
- {
- int pending = read_c0_status() & read_c0_cause() & ST0_IM;
- int irq = txx9_irq_dispatch(pending);
- if (likely(irq >= 0))
- do_IRQ(irq);
- else
- spurious_interrupt();
- }
- /* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
- #ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
- static unsigned long __swizzle_addr_none(unsigned long port)
- {
- return port;
- }
- unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
- EXPORT_SYMBOL(__swizzle_addr_b);
- #endif
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