From edcaf1a6a77315562e9781245cc8e028c9a921dc Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Fri, 11 Jul 2008 23:27:54 +0900 Subject: [MIPS] TXx9: Make single kernel can support multiple boards Make single kernel can be used on RBTX4927/37/38. Also make some SoC-specific code independent from board-specific code. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle --- arch/mips/txx9/generic/setup.c | 169 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 169 insertions(+) (limited to 'arch/mips/txx9/generic/setup.c') diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c index 46a63117775..66ff74f80c6 100644 --- a/arch/mips/txx9/generic/setup.c +++ b/arch/mips/txx9/generic/setup.c @@ -14,7 +14,16 @@ #include #include #include +#include +#include +#include +#include +#include +#include #include +#ifdef CONFIG_CPU_TX49XX +#include +#endif /* EBUSC settings of TX4927, etc. */ struct resource txx9_ce_res[8]; @@ -49,3 +58,163 @@ txx9_reg_res_init(unsigned int pcode, unsigned long base, unsigned long size) unsigned int txx9_master_clock; unsigned int txx9_cpu_clock; unsigned int txx9_gbus_clock; + + +/* Minimum CLK support */ + +struct clk *clk_get(struct device *dev, const char *id) +{ + if (!strcmp(id, "spi-baseclk")) + return (struct clk *)(txx9_gbus_clock / 2 / 4); + if (!strcmp(id, "imbus_clk")) + return (struct clk *)(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); + +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; + +/* board definitions */ +static struct txx9_board_vec *board_vecs[] __initdata = { +#ifdef CONFIG_TOSHIBA_JMR3927 + &jmr3927_vec, +#endif +#ifdef CONFIG_TOSHIBA_RBTX4927 + &rbtx4927_vec, + &rbtx4937_vec, +#endif +#ifdef CONFIG_TOSHIBA_RBTX4938 + &rbtx4938_vec, +#endif +}; +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] */ + + /* 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) +{ + int i; + +#ifdef CONFIG_CPU_TX39XX + mips_machtype = MACH_TOSHIBA_JMR3927; +#endif +#ifdef CONFIG_CPU_TX49XX + switch (TX4938_REV_PCODE()) { + case 0x4927: + mips_machtype = MACH_TOSHIBA_RBTX4927; + break; + case 0x4937: + mips_machtype = MACH_TOSHIBA_RBTX4937; + break; + case 0x4938: + mips_machtype = MACH_TOSHIBA_RBTX4938; + break; + } +#endif + for (i = 0; i < ARRAY_SIZE(board_vecs); i++) { + if (board_vecs[i]->type == mips_machtype) { + txx9_board_vec = board_vecs[i]; + strcpy(txx9_system_type, txx9_board_vec->system); + return 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) +{ + 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(); +} -- cgit v1.2.3