*
* Released under the terms of the GNU GPL v2.0.
*/
+
#include <linux/init.h>
#include <linux/mm.h>
#include <asm/cacheflush.h>
#include <asm/io.h>
-/*
- * Calculate the OC address and set the way bit on the SH-2.
- *
- * We must have already jump_to_P2()'ed prior to calling this
- * function, since we rely on CCR manipulation to do the
- * Right Thing(tm).
- */
-unsigned long __get_oc_addr(unsigned long set, unsigned long way)
+void __flush_wback_region(void *start, int size)
{
- unsigned long ccr;
-
- /*
- * On SH-2 the way bit isn't tracked in the address field
- * if we're doing address array access .. instead, we need
- * to manually switch out the way in the CCR.
- */
- ccr = ctrl_inl(CCR);
- ccr &= ~0x00c0;
- ccr |= way << cpu_data->dcache.way_shift;
-
- /*
- * Despite the number of sets being halved, we end up losing
- * the first 2 ways to OCRAM instead of the last 2 (if we're
- * 4-way). As a result, forcibly setting the W1 bit handily
- * bumps us up 2 ways.
- */
- if (ccr & CCR_CACHE_ORA)
- ccr |= 1 << (cpu_data->dcache.way_shift + 1);
-
- ctrl_outl(ccr, CCR);
-
- return CACHE_OC_ADDRESS_ARRAY | (set << cpu_data->dcache.entry_shift);
+ unsigned long v;
+ unsigned long begin, end;
+
+ begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
+ end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
+ & ~(L1_CACHE_BYTES-1);
+ for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+ /* FIXME cache purge */
+ ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
+ }
}
-int __init detect_cpu_and_cache_system(void)
+void __flush_purge_region(void *start, int size)
{
- /*
- * For now, assume SH7604 .. fix this later.
- */
- cpu_data->type = CPU_SH7604;
- cpu_data->dcache.ways = 4;
- cpu_data->dcache.way_shift = 6;
- cpu_data->dcache.sets = 64;
- cpu_data->dcache.entry_shift = 4;
- cpu_data->dcache.linesz = L1_CACHE_BYTES;
- cpu_data->dcache.flags = 0;
-
- /*
- * SH-2 doesn't have separate caches
- */
- cpu_data->dcache.flags |= SH_CACHE_COMBINED;
- cpu_data->icache = cpu_data->dcache;
+ unsigned long v;
+ unsigned long begin, end;
+
+ begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
+ end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
+ & ~(L1_CACHE_BYTES-1);
+ for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+ ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
+ }
+}
- return 0;
+void __flush_invalidate_region(void *start, int size)
+{
+ unsigned long v;
+ unsigned long begin, end;
+
+ begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
+ end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
+ & ~(L1_CACHE_BYTES-1);
+ for (v = begin; v < end; v+=L1_CACHE_BYTES) {
+ ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
+ }
}