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authorKonrad Eisele <konrad@gaisler.com>2009-08-16 20:13:33 -0400
committerDavid S. Miller <davem@davemloft.net>2009-08-17 21:32:11 -0400
commit75d9e34698540e96b422293e1d76ab02cc7faefb (patch)
treeaf7e037f1b3d59af4b2c53b5d7381afb82f3664e /arch/sparc/mm/srmmu.c
parente63829de3d03f92cea2b26119e0aa9a7043b9913 (diff)
sparc, leon: sparc-leon specific SRMMU initialization and bootup fixes.
The sparc-leon caches are virtually tagged so a flush is needed on ctx switch. Signed-off-by: Konrad Eisele <konrad@gaisler.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/mm/srmmu.c')
-rw-r--r--arch/sparc/mm/srmmu.c53
1 files changed, 52 insertions, 1 deletions
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index ade4eb373bdd..509b1ffeba66 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -46,6 +46,7 @@
46#include <asm/tsunami.h> 46#include <asm/tsunami.h>
47#include <asm/swift.h> 47#include <asm/swift.h>
48#include <asm/turbosparc.h> 48#include <asm/turbosparc.h>
49#include <asm/leon.h>
49 50
50#include <asm/btfixup.h> 51#include <asm/btfixup.h>
51 52
@@ -569,6 +570,9 @@ static void srmmu_switch_mm(struct mm_struct *old_mm, struct mm_struct *mm,
569 srmmu_ctxd_set(&srmmu_context_table[mm->context], mm->pgd); 570 srmmu_ctxd_set(&srmmu_context_table[mm->context], mm->pgd);
570 } 571 }
571 572
573 if (sparc_cpu_model == sparc_leon)
574 leon_switch_mm();
575
572 if (is_hypersparc) 576 if (is_hypersparc)
573 hyper_flush_whole_icache(); 577 hyper_flush_whole_icache();
574 578
@@ -1977,6 +1981,45 @@ static void __init init_viking(void)
1977 poke_srmmu = poke_viking; 1981 poke_srmmu = poke_viking;
1978} 1982}
1979 1983
1984#ifdef CONFIG_SPARC_LEON
1985
1986void __init poke_leonsparc(void)
1987{
1988}
1989
1990void __init init_leon(void)
1991{
1992
1993 srmmu_name = "Leon";
1994
1995 BTFIXUPSET_CALL(flush_cache_all, leon_flush_cache_all,
1996 BTFIXUPCALL_NORM);
1997 BTFIXUPSET_CALL(flush_cache_mm, leon_flush_cache_all,
1998 BTFIXUPCALL_NORM);
1999 BTFIXUPSET_CALL(flush_cache_page, leon_flush_pcache_all,
2000 BTFIXUPCALL_NORM);
2001 BTFIXUPSET_CALL(flush_cache_range, leon_flush_cache_all,
2002 BTFIXUPCALL_NORM);
2003 BTFIXUPSET_CALL(flush_page_for_dma, leon_flush_dcache_all,
2004 BTFIXUPCALL_NORM);
2005
2006 BTFIXUPSET_CALL(flush_tlb_all, leon_flush_tlb_all, BTFIXUPCALL_NORM);
2007 BTFIXUPSET_CALL(flush_tlb_mm, leon_flush_tlb_all, BTFIXUPCALL_NORM);
2008 BTFIXUPSET_CALL(flush_tlb_page, leon_flush_tlb_all, BTFIXUPCALL_NORM);
2009 BTFIXUPSET_CALL(flush_tlb_range, leon_flush_tlb_all, BTFIXUPCALL_NORM);
2010
2011 BTFIXUPSET_CALL(__flush_page_to_ram, leon_flush_cache_all,
2012 BTFIXUPCALL_NOP);
2013 BTFIXUPSET_CALL(flush_sig_insns, leon_flush_cache_all, BTFIXUPCALL_NOP);
2014
2015 poke_srmmu = poke_leonsparc;
2016
2017 srmmu_cache_pagetables = 0;
2018
2019 leon_flush_during_switch = leon_flush_needed();
2020}
2021#endif
2022
1980/* Probe for the srmmu chip version. */ 2023/* Probe for the srmmu chip version. */
1981static void __init get_srmmu_type(void) 2024static void __init get_srmmu_type(void)
1982{ 2025{
@@ -1992,7 +2035,15 @@ static void __init get_srmmu_type(void)
1992 psr_typ = (psr >> 28) & 0xf; 2035 psr_typ = (psr >> 28) & 0xf;
1993 psr_vers = (psr >> 24) & 0xf; 2036 psr_vers = (psr >> 24) & 0xf;
1994 2037
1995 /* First, check for HyperSparc or Cypress. */ 2038 /* First, check for sparc-leon. */
2039 if (sparc_cpu_model == sparc_leon) {
2040 psr_typ = 0xf; /* hardcoded ids for older models/simulators */
2041 psr_vers = 2;
2042 init_leon();
2043 return;
2044 }
2045
2046 /* Second, check for HyperSparc or Cypress. */
1996 if(mod_typ == 1) { 2047 if(mod_typ == 1) {
1997 switch(mod_rev) { 2048 switch(mod_rev) {
1998 case 7: 2049 case 7: