Commit bc6b92f8 authored by Sonic Zhang's avatar Sonic Zhang Committed by Mike Frysinger

Blackfin: don't attempt to flush on-chip L1 SRAM regions

Since the on-chip L1 regions are not cacheable, there is no point in
trying to flush/invalidate them.  Plus, older Blackfin parts like to
trigger an exception (like BF533-0.3).
Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
parent 73ecfcf9
......@@ -39,7 +39,12 @@ extern void blackfin_invalidate_entire_icache(void);
static inline void flush_icache_range(unsigned start, unsigned end)
{
#if defined(CONFIG_BFIN_EXTMEM_WRITEBACK) || defined(CONFIG_BFIN_L2_WRITEBACK)
#if defined(CONFIG_BFIN_EXTMEM_WRITEBACK)
if (end <= physical_mem_end)
blackfin_dcache_flush_range(start, end);
#endif
#if defined(CONFIG_BFIN_L2_WRITEBACK)
if (start >= L2_START && end <= L2_START + L2_LENGTH)
blackfin_dcache_flush_range(start, end);
#endif
......@@ -52,9 +57,17 @@ static inline void flush_icache_range(unsigned start, unsigned end)
* the pipeline.
*/
SSYNC();
#if defined(CONFIG_BFIN_ICACHE)
#if defined(CONFIG_BFIN_EXTMEM_ICACHEABLE)
if (end <= physical_mem_end) {
blackfin_icache_flush_range(start, end);
flush_icache_range_others(start, end);
}
#endif
#if defined(CONFIG_BFIN_L2_ICACHEABLE)
if (start >= L2_START && end <= L2_START + L2_LENGTH) {
blackfin_icache_flush_range(start, end);
flush_icache_range_others(start, end);
}
#endif
}
......
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