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-rw-r--r--arch/arm/mm/proc-feroceon.S242
1 files changed, 216 insertions, 26 deletions
diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S
index a02c1712b52d..f2e5884c513a 100644
--- a/arch/arm/mm/proc-feroceon.S
+++ b/arch/arm/mm/proc-feroceon.S
@@ -44,11 +44,31 @@
*/
#define CACHE_DLINESIZE 32
+ .bss
+ .align 3
+__cache_params_loc:
+ .space 8
+
.text
+__cache_params:
+ .word __cache_params_loc
+
/*
* cpu_feroceon_proc_init()
*/
ENTRY(cpu_feroceon_proc_init)
+ mrc p15, 0, r0, c0, c0, 1 @ read cache type register
+ ldr r1, __cache_params
+ mov r2, #(16 << 5)
+ tst r0, #(1 << 16) @ get way
+ mov r0, r0, lsr #18 @ get cache size order
+ movne r3, #((4 - 1) << 30) @ 4-way
+ and r0, r0, #0xf
+ moveq r3, #0 @ 1-way
+ mov r2, r2, lsl r0 @ actual cache size
+ movne r2, r2, lsr #2 @ turned into # of sets
+ sub r2, r2, #(1 << 5)
+ stmia r1, {r2, r3}
mov pc, lr
/*
@@ -59,6 +79,13 @@ ENTRY(cpu_feroceon_proc_fin)
mov ip, #PSR_F_BIT | PSR_I_BIT | SVC_MODE
msr cpsr_c, ip
bl feroceon_flush_kern_cache_all
+
+#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH)
+ mov r0, #0
+ mcr p15, 1, r0, c15, c9, 0 @ clean L2
+ mcr p15, 0, r0, c7, c10, 4 @ drain WB
+#endif
+
mrc p15, 0, r0, c1, c0, 0 @ ctrl register
bic r0, r0, #0x1000 @ ...i............
bic r0, r0, #0x000e @ ............wca.
@@ -117,11 +144,19 @@ ENTRY(feroceon_flush_user_cache_all)
*/
ENTRY(feroceon_flush_kern_cache_all)
mov r2, #VM_EXEC
- mov ip, #0
+
__flush_whole_cache:
-1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate
- bne 1b
+ ldr r1, __cache_params
+ ldmia r1, {r1, r3}
+1: orr ip, r1, r3
+2: mcr p15, 0, ip, c7, c14, 2 @ clean + invalidate D set/way
+ subs ip, ip, #(1 << 30) @ next way
+ bcs 2b
+ subs r1, r1, #(1 << 5) @ next set
+ bcs 1b
+
tst r2, #VM_EXEC
+ mov ip, #0
mcrne p15, 0, ip, c7, c5, 0 @ invalidate I cache
mcrne p15, 0, ip, c7, c10, 4 @ drain WB
mov pc, lr
@@ -138,7 +173,6 @@ __flush_whole_cache:
*/
.align 5
ENTRY(feroceon_flush_user_cache_range)
- mov ip, #0
sub r3, r1, r0 @ calculate total size
cmp r3, #CACHE_DLIMIT
bgt __flush_whole_cache
@@ -152,6 +186,7 @@ ENTRY(feroceon_flush_user_cache_range)
cmp r0, r1
blo 1b
tst r2, #VM_EXEC
+ mov ip, #0
mcrne p15, 0, ip, c7, c10, 4 @ drain WB
mov pc, lr
@@ -209,6 +244,20 @@ ENTRY(feroceon_flush_kern_dcache_page)
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov pc, lr
+ .align 5
+ENTRY(feroceon_range_flush_kern_dcache_page)
+ mrs r2, cpsr
+ add r1, r0, #PAGE_SZ - CACHE_DLINESIZE @ top addr is inclusive
+ orr r3, r2, #PSR_I_BIT
+ msr cpsr_c, r3 @ disable interrupts
+ mcr p15, 5, r0, c15, c15, 0 @ D clean/inv range start
+ mcr p15, 5, r1, c15, c15, 1 @ D clean/inv range top
+ msr cpsr_c, r2 @ restore interrupts
+ mov r0, #0
+ mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache
+ mcr p15, 0, r0, c7, c10, 4 @ drain WB
+ mov pc, lr
+
/*
* dma_inv_range(start, end)
*
@@ -225,10 +274,10 @@ ENTRY(feroceon_flush_kern_dcache_page)
.align 5
ENTRY(feroceon_dma_inv_range)
tst r0, #CACHE_DLINESIZE - 1
+ bic r0, r0, #CACHE_DLINESIZE - 1
mcrne p15, 0, r0, c7, c10, 1 @ clean D entry
tst r1, #CACHE_DLINESIZE - 1
mcrne p15, 0, r1, c7, c10, 1 @ clean D entry
- bic r0, r0, #CACHE_DLINESIZE - 1
1: mcr p15, 0, r0, c7, c6, 1 @ invalidate D entry
add r0, r0, #CACHE_DLINESIZE
cmp r0, r1
@@ -236,6 +285,22 @@ ENTRY(feroceon_dma_inv_range)
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov pc, lr
+ .align 5
+ENTRY(feroceon_range_dma_inv_range)
+ mrs r2, cpsr
+ tst r0, #CACHE_DLINESIZE - 1
+ mcrne p15, 0, r0, c7, c10, 1 @ clean D entry
+ tst r1, #CACHE_DLINESIZE - 1
+ mcrne p15, 0, r1, c7, c10, 1 @ clean D entry
+ cmp r1, r0
+ subne r1, r1, #1 @ top address is inclusive
+ orr r3, r2, #PSR_I_BIT
+ msr cpsr_c, r3 @ disable interrupts
+ mcr p15, 5, r0, c15, c14, 0 @ D inv range start
+ mcr p15, 5, r1, c15, c14, 1 @ D inv range top
+ msr cpsr_c, r2 @ restore interrupts
+ mov pc, lr
+
/*
* dma_clean_range(start, end)
*
@@ -256,6 +321,19 @@ ENTRY(feroceon_dma_clean_range)
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov pc, lr
+ .align 5
+ENTRY(feroceon_range_dma_clean_range)
+ mrs r2, cpsr
+ cmp r1, r0
+ subne r1, r1, #1 @ top address is inclusive
+ orr r3, r2, #PSR_I_BIT
+ msr cpsr_c, r3 @ disable interrupts
+ mcr p15, 5, r0, c15, c13, 0 @ D clean range start
+ mcr p15, 5, r1, c15, c13, 1 @ D clean range top
+ msr cpsr_c, r2 @ restore interrupts
+ mcr p15, 0, r0, c7, c10, 4 @ drain WB
+ mov pc, lr
+
/*
* dma_flush_range(start, end)
*
@@ -274,6 +352,19 @@ ENTRY(feroceon_dma_flush_range)
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov pc, lr
+ .align 5
+ENTRY(feroceon_range_dma_flush_range)
+ mrs r2, cpsr
+ cmp r1, r0
+ subne r1, r1, #1 @ top address is inclusive
+ orr r3, r2, #PSR_I_BIT
+ msr cpsr_c, r3 @ disable interrupts
+ mcr p15, 5, r0, c15, c15, 0 @ D clean/inv range start
+ mcr p15, 5, r1, c15, c15, 1 @ D clean/inv range top
+ msr cpsr_c, r2 @ restore interrupts
+ mcr p15, 0, r0, c7, c10, 4 @ drain WB
+ mov pc, lr
+
ENTRY(feroceon_cache_fns)
.long feroceon_flush_kern_cache_all
.long feroceon_flush_user_cache_all
@@ -285,12 +376,33 @@ ENTRY(feroceon_cache_fns)
.long feroceon_dma_clean_range
.long feroceon_dma_flush_range
+ENTRY(feroceon_range_cache_fns)
+ .long feroceon_flush_kern_cache_all
+ .long feroceon_flush_user_cache_all
+ .long feroceon_flush_user_cache_range
+ .long feroceon_coherent_kern_range
+ .long feroceon_coherent_user_range
+ .long feroceon_range_flush_kern_dcache_page
+ .long feroceon_range_dma_inv_range
+ .long feroceon_range_dma_clean_range
+ .long feroceon_range_dma_flush_range
+
.align 5
ENTRY(cpu_feroceon_dcache_clean_area)
+#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH)
+ mov r2, r0
+ mov r3, r1
+#endif
1: mcr p15, 0, r0, c7, c10, 1 @ clean D entry
add r0, r0, #CACHE_DLINESIZE
subs r1, r1, #CACHE_DLINESIZE
bhi 1b
+#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH)
+1: mcr p15, 1, r2, c15, c9, 1 @ clean L2 entry
+ add r2, r2, #CACHE_DLINESIZE
+ subs r3, r3, #CACHE_DLINESIZE
+ bhi 1b
+#endif
mcr p15, 0, r0, c7, c10, 4 @ drain WB
mov pc, lr
@@ -306,16 +418,25 @@ ENTRY(cpu_feroceon_dcache_clean_area)
.align 5
ENTRY(cpu_feroceon_switch_mm)
#ifdef CONFIG_MMU
- mov ip, #0
-@ && 'Clean & Invalidate whole DCache'
-1: mrc p15, 0, r15, c7, c14, 3 @ test,clean,invalidate
- bne 1b
- mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache
- mcr p15, 0, ip, c7, c10, 4 @ drain WB
+ /*
+ * Note: we wish to call __flush_whole_cache but we need to preserve
+ * lr to do so. The only way without touching main memory is to
+ * use r2 which is normally used to test the VM_EXEC flag, and
+ * compensate locally for the skipped ops if it is not set.
+ */
+ mov r2, lr @ abuse r2 to preserve lr
+ bl __flush_whole_cache
+ @ if r2 contains the VM_EXEC bit then the next 2 ops are done already
+ tst r2, #VM_EXEC
+ mcreq p15, 0, ip, c7, c5, 0 @ invalidate I cache
+ mcreq p15, 0, ip, c7, c10, 4 @ drain WB
+
mcr p15, 0, r0, c2, c0, 0 @ load page table pointer
mcr p15, 0, ip, c8, c7, 0 @ invalidate I & D TLBs
-#endif
+ mov pc, r2
+#else
mov pc, lr
+#endif
/*
* cpu_feroceon_set_pte_ext(ptep, pte, ext)
@@ -345,6 +466,9 @@ ENTRY(cpu_feroceon_set_pte_ext)
str r2, [r0] @ hardware version
mov r0, r0
mcr p15, 0, r0, c7, c10, 1 @ clean D entry
+#if defined(CONFIG_CACHE_FEROCEON_L2) && !defined(CONFIG_L2_CACHE_WRITETHROUGH)
+ mcr p15, 1, r0, c15, c9, 1 @ clean L2 entry
+#endif
mcr p15, 0, r0, c7, c10, 4 @ drain WB
#endif
mov pc, lr
@@ -369,14 +493,15 @@ __feroceon_setup:
.size __feroceon_setup, . - __feroceon_setup
/*
- * R
- * .RVI ZFRS BLDP WCAM
- * .011 0001 ..11 0101
+ * B
+ * R P
+ * .RVI UFRS BLDP WCAM
+ * .011 .001 ..11 0101
*
*/
.type feroceon_crval, #object
feroceon_crval:
- crval clear=0x00007f3f, mmuset=0x00003135, ucset=0x00001134
+ crval clear=0x0000773f, mmuset=0x00003135, ucset=0x00001134
__INITDATA
@@ -414,6 +539,21 @@ cpu_feroceon_name:
.asciz "Feroceon"
.size cpu_feroceon_name, . - cpu_feroceon_name
+ .type cpu_88fr531_name, #object
+cpu_88fr531_name:
+ .asciz "Feroceon 88FR531-vd"
+ .size cpu_88fr531_name, . - cpu_88fr531_name
+
+ .type cpu_88fr571_name, #object
+cpu_88fr571_name:
+ .asciz "Feroceon 88FR571-vd"
+ .size cpu_88fr571_name, . - cpu_88fr571_name
+
+ .type cpu_88fr131_name, #object
+cpu_88fr131_name:
+ .asciz "Feroceon 88FR131"
+ .size cpu_88fr131_name, . - cpu_88fr131_name
+
.align
.section ".proc.info.init", #alloc, #execinstr
@@ -421,15 +561,15 @@ cpu_feroceon_name:
#ifdef CONFIG_CPU_FEROCEON_OLD_ID
.type __feroceon_old_id_proc_info,#object
__feroceon_old_id_proc_info:
- .long 0x41069260
- .long 0xfffffff0
- .long PMD_TYPE_SECT | \
+ .long 0x41009260
+ .long 0xff00fff0
+ .long PMD_TYPE_SECT | \
PMD_SECT_BUFFERABLE | \
PMD_SECT_CACHEABLE | \
PMD_BIT4 | \
PMD_SECT_AP_WRITE | \
PMD_SECT_AP_READ
- .long PMD_TYPE_SECT | \
+ .long PMD_TYPE_SECT | \
PMD_BIT4 | \
PMD_SECT_AP_WRITE | \
PMD_SECT_AP_READ
@@ -445,17 +585,17 @@ __feroceon_old_id_proc_info:
.size __feroceon_old_id_proc_info, . - __feroceon_old_id_proc_info
#endif
- .type __feroceon_proc_info,#object
-__feroceon_proc_info:
+ .type __88fr531_proc_info,#object
+__88fr531_proc_info:
.long 0x56055310
.long 0xfffffff0
- .long PMD_TYPE_SECT | \
+ .long PMD_TYPE_SECT | \
PMD_SECT_BUFFERABLE | \
PMD_SECT_CACHEABLE | \
PMD_BIT4 | \
PMD_SECT_AP_WRITE | \
PMD_SECT_AP_READ
- .long PMD_TYPE_SECT | \
+ .long PMD_TYPE_SECT | \
PMD_BIT4 | \
PMD_SECT_AP_WRITE | \
PMD_SECT_AP_READ
@@ -463,9 +603,59 @@ __feroceon_proc_info:
.long cpu_arch_name
.long cpu_elf_name
.long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
- .long cpu_feroceon_name
+ .long cpu_88fr531_name
.long feroceon_processor_functions
.long v4wbi_tlb_fns
.long feroceon_user_fns
.long feroceon_cache_fns
- .size __feroceon_proc_info, . - __feroceon_proc_info
+ .size __88fr531_proc_info, . - __88fr531_proc_info
+
+ .type __88fr571_proc_info,#object
+__88fr571_proc_info:
+ .long 0x56155710
+ .long 0xfffffff0
+ .long PMD_TYPE_SECT | \
+ PMD_SECT_BUFFERABLE | \
+ PMD_SECT_CACHEABLE | \
+ PMD_BIT4 | \
+ PMD_SECT_AP_WRITE | \
+ PMD_SECT_AP_READ
+ .long PMD_TYPE_SECT | \
+ PMD_BIT4 | \
+ PMD_SECT_AP_WRITE | \
+ PMD_SECT_AP_READ
+ b __feroceon_setup
+ .long cpu_arch_name
+ .long cpu_elf_name
+ .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
+ .long cpu_88fr571_name
+ .long feroceon_processor_functions
+ .long v4wbi_tlb_fns
+ .long feroceon_user_fns
+ .long feroceon_range_cache_fns
+ .size __88fr571_proc_info, . - __88fr571_proc_info
+
+ .type __88fr131_proc_info,#object
+__88fr131_proc_info:
+ .long 0x56251310
+ .long 0xfffffff0
+ .long PMD_TYPE_SECT | \
+ PMD_SECT_BUFFERABLE | \
+ PMD_SECT_CACHEABLE | \
+ PMD_BIT4 | \
+ PMD_SECT_AP_WRITE | \
+ PMD_SECT_AP_READ
+ .long PMD_TYPE_SECT | \
+ PMD_BIT4 | \
+ PMD_SECT_AP_WRITE | \
+ PMD_SECT_AP_READ
+ b __feroceon_setup
+ .long cpu_arch_name
+ .long cpu_elf_name
+ .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP
+ .long cpu_88fr131_name
+ .long feroceon_processor_functions
+ .long v4wbi_tlb_fns
+ .long feroceon_user_fns
+ .long feroceon_range_cache_fns
+ .size __88fr131_proc_info, . - __88fr131_proc_info
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.