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Diffstat (limited to 'arch/xtensa/kernel/platform.c')
| -rw-r--r-- | arch/xtensa/kernel/platform.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/xtensa/kernel/platform.c b/arch/xtensa/kernel/platform.c new file mode 100644 index 000000000..ac1e0e566 --- /dev/null +++ b/arch/xtensa/kernel/platform.c @@ -0,0 +1,43 @@ +/* + * arch/xtensa/kernel/platform.c + * + * Default platform functions. + * + * 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. + * + * Copyright (C) 2005 Tensilica Inc. + * + * Chris Zankel <chris@zankel.net> + */ + +#include <linux/printk.h> +#include <linux/types.h> +#include <asm/platform.h> +#include <asm/timex.h> + +#define _F(r,f,a,b) \ + r __platform_##f a b; \ + r platform_##f a __attribute__((weak, alias("__platform_"#f))) + +/* + * Default functions that are used if no platform specific function is defined. + * (Please, refer to include/asm-xtensa/platform.h for more information) + */ + +_F(void, init, (bp_tag_t *first), { }); +_F(void, setup, (char** cmd), { }); +_F(void, restart, (void), { while(1); }); +_F(void, halt, (void), { while(1); }); +_F(void, power_off, (void), { while(1); }); +_F(void, idle, (void), { __asm__ __volatile__ ("waiti 0" ::: "memory"); }); +_F(void, heartbeat, (void), { }); + +#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT +_F(void, calibrate_ccount, (void), +{ + pr_err("ERROR: Cannot calibrate cpu frequency! Assuming 10MHz.\n"); + ccount_freq = 10 * 1000000UL; +}); +#endif |