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authorChris Zankel <czankel@tensilica.com>2005-06-23 22:01:16 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-24 00:05:21 -0700
commit5a0015d62668e64c8b6e02e360fbbea121bfd5e6 (patch)
treeed879f8cbe0efee21ad861f38c4024bdcf25df9b /arch/xtensa/kernel/platform.c
parent4bedea94545165364618d403d03b61d797acba0b (diff)
[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 3
The attached patches provides part 3 of an architecture implementation for the Tensilica Xtensa CPU series. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/xtensa/kernel/platform.c')
-rw-r--r--arch/xtensa/kernel/platform.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/xtensa/kernel/platform.c b/arch/xtensa/kernel/platform.c
new file mode 100644
index 00000000000..cf136278444
--- /dev/null
+++ b/arch/xtensa/kernel/platform.c
@@ -0,0 +1,49 @@
+/*
+ * 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/config.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/time.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, setup, (char** cmd), { });
+_F(void, init_irq, (void), { });
+_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), { });
+_F(int, pcibios_fixup, (void), { return 0; });
+_F(int, get_rtc_time, (time_t* t), { return 0; });
+_F(int, set_rtc_time, (time_t t), { return 0; });
+
+#if CONFIG_XTENSA_CALIBRATE_CCOUNT
+_F(void, calibrate_ccount, (void),
+{
+ printk ("ERROR: Cannot calibrate cpu frequency! Assuming 100MHz.\n");
+ ccount_per_jiffy = 100 * (1000000UL/HZ);
+});
+#endif
+