#include <config.h>
#include <linux/linkage.h>
+#include <asm/macro.h>
#include <asm/psci.h>
.pushsection ._secure.text, "ax"
ENDPROC(default_psci_vector)
.weak default_psci_vector
+ENTRY(psci_version)
ENTRY(psci_cpu_suspend)
ENTRY(psci_cpu_off)
ENTRY(psci_cpu_on)
+ENTRY(psci_affinity_info)
ENTRY(psci_migrate)
+ENTRY(psci_migrate_info_type)
+ENTRY(psci_migrate_info_up_cpu)
+ENTRY(psci_system_off)
+ENTRY(psci_system_reset)
+ENTRY(psci_features)
+ENTRY(psci_cpu_freeze)
+ENTRY(psci_cpu_default_suspend)
+ENTRY(psci_node_hw_state)
+ENTRY(psci_system_suspend)
+ENTRY(psci_set_suspend_mode)
+ENTRY(psi_stat_residency)
+ENTRY(psci_stat_count)
mov r0, #ARM_PSCI_RET_NI @ Return -1 (Not Implemented)
mov pc, lr
+ENDPROC(psci_stat_count)
+ENDPROC(psi_stat_residency)
+ENDPROC(psci_set_suspend_mode)
+ENDPROC(psci_system_suspend)
+ENDPROC(psci_node_hw_state)
+ENDPROC(psci_cpu_default_suspend)
+ENDPROC(psci_cpu_freeze)
+ENDPROC(psci_features)
+ENDPROC(psci_system_reset)
+ENDPROC(psci_system_off)
+ENDPROC(psci_migrate_info_up_cpu)
+ENDPROC(psci_migrate_info_type)
ENDPROC(psci_migrate)
+ENDPROC(psci_affinity_info)
ENDPROC(psci_cpu_on)
ENDPROC(psci_cpu_off)
ENDPROC(psci_cpu_suspend)
+ENDPROC(psci_version)
+.weak psci_version
.weak psci_cpu_suspend
.weak psci_cpu_off
.weak psci_cpu_on
+.weak psci_affinity_info
.weak psci_migrate
+.weak psci_migrate_info_type
+.weak psci_migrate_info_up_cpu
+.weak psci_system_off
+.weak psci_system_reset
+.weak psci_features
+.weak psci_cpu_freeze
+.weak psci_cpu_default_suspend
+.weak psci_node_hw_state
+.weak psci_system_suspend
+.weak psci_set_suspend_mode
+.weak psi_stat_residency
+.weak psci_stat_count
_psci_table:
.word ARM_PSCI_FN_CPU_SUSPEND
.word psci_cpu_on
.word ARM_PSCI_FN_MIGRATE
.word psci_migrate
+ .word ARM_PSCI_0_2_FN_PSCI_VERSION
+ .word psci_version
+ .word ARM_PSCI_0_2_FN_CPU_SUSPEND
+ .word psci_cpu_suspend
+ .word ARM_PSCI_0_2_FN_CPU_OFF
+ .word psci_cpu_off
+ .word ARM_PSCI_0_2_FN_CPU_ON
+ .word psci_cpu_on
+ .word ARM_PSCI_0_2_FN_AFFINITY_INFO
+ .word psci_affinity_info
+ .word ARM_PSCI_0_2_FN_MIGRATE
+ .word psci_migrate
+ .word ARM_PSCI_0_2_FN_MIGRATE_INFO_TYPE
+ .word psci_migrate_info_type
+ .word ARM_PSCI_0_2_FN_MIGRATE_INFO_UP_CPU
+ .word psci_migrate_info_up_cpu
+ .word ARM_PSCI_0_2_FN_SYSTEM_OFF
+ .word psci_system_off
+ .word ARM_PSCI_0_2_FN_SYSTEM_RESET
+ .word psci_system_reset
+ .word ARM_PSCI_1_0_FN_PSCI_FEATURES
+ .word psci_features
+ .word ARM_PSCI_1_0_FN_CPU_FREEZE
+ .word psci_cpu_freeze
+ .word ARM_PSCI_1_0_FN_CPU_DEFAULT_SUSPEND
+ .word psci_cpu_default_suspend
+ .word ARM_PSCI_1_0_FN_NODE_HW_STATE
+ .word psci_node_hw_state
+ .word ARM_PSCI_1_0_FN_SYSTEM_SUSPEND
+ .word psci_system_suspend
+ .word ARM_PSCI_1_0_FN_SET_SUSPEND_MODE
+ .word psci_set_suspend_mode
+ .word ARM_PSCI_1_0_FN_STAT_RESIDENCY
+ .word psi_stat_residency
+ .word ARM_PSCI_1_0_FN_STAT_COUNT
+ .word psci_stat_count
.word 0
.word 0
ENDPROC(psci_get_cpu_id)
.weak psci_get_cpu_id
+/* Imported from Linux kernel */
+ENTRY(psci_v7_flush_dcache_all)
+ stmfd sp!, {r4-r5, r7, r9-r11, lr}
+ dmb @ ensure ordering with previous memory accesses
+ mrc p15, 1, r0, c0, c0, 1 @ read clidr
+ ands r3, r0, #0x7000000 @ extract loc from clidr
+ mov r3, r3, lsr #23 @ left align loc bit field
+ beq finished @ if loc is 0, then no need to clean
+ mov r10, #0 @ start clean at cache level 0
+flush_levels:
+ add r2, r10, r10, lsr #1 @ work out 3x current cache level
+ mov r1, r0, lsr r2 @ extract cache type bits from clidr
+ and r1, r1, #7 @ mask of the bits for current cache only
+ cmp r1, #2 @ see what cache we have at this level
+ blt skip @ skip if no cache, or just i-cache
+ mrs r9, cpsr @ make cssr&csidr read atomic
+ mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr
+ isb @ isb to sych the new cssr&csidr
+ mrc p15, 1, r1, c0, c0, 0 @ read the new csidr
+ msr cpsr_c, r9
+ and r2, r1, #7 @ extract the length of the cache lines
+ add r2, r2, #4 @ add 4 (line length offset)
+ ldr r4, =0x3ff
+ ands r4, r4, r1, lsr #3 @ find maximum number on the way size
+ clz r5, r4 @ find bit position of way size increment
+ ldr r7, =0x7fff
+ ands r7, r7, r1, lsr #13 @ extract max number of the index size
+loop1:
+ mov r9, r7 @ create working copy of max index
+loop2:
+ orr r11, r10, r4, lsl r5 @ factor way and cache number into r11
+ orr r11, r11, r9, lsl r2 @ factor index number into r11
+ mcr p15, 0, r11, c7, c14, 2 @ clean & invalidate by set/way
+ subs r9, r9, #1 @ decrement the index
+ bge loop2
+ subs r4, r4, #1 @ decrement the way
+ bge loop1
+skip:
+ add r10, r10, #2 @ increment cache number
+ cmp r3, r10
+ bgt flush_levels
+finished:
+ mov r10, #0 @ swith back to cache level 0
+ mcr p15, 2, r10, c0, c0, 0 @ select current cache level in cssr
+ dsb st
+ isb
+ ldmfd sp!, {r4-r5, r7, r9-r11, lr}
+ bx lr
+ENDPROC(psci_v7_flush_dcache_all)
+
+ENTRY(psci_disable_smp)
+ mrc p15, 0, r0, c1, c0, 1 @ ACTLR
+ bic r0, r0, #(1 << 6) @ Clear SMP bit
+ mcr p15, 0, r0, c1, c0, 1 @ ACTLR
+ isb
+ dsb
+ bx lr
+ENDPROC(psci_disable_smp)
+.weak psci_disable_smp
+
+ENTRY(psci_enable_smp)
+ mrc p15, 0, r0, c1, c0, 1 @ ACTLR
+ orr r0, r0, #(1 << 6) @ Set SMP bit
+ mcr p15, 0, r0, c1, c0, 1 @ ACTLR
+ isb
+ bx lr
+ENDPROC(psci_enable_smp)
+.weak psci_enable_smp
+
+ENTRY(psci_cpu_off_common)
+ push {lr}
+
+ bl psci_v7_flush_dcache_all
+
+ clrex @ Why???
+
+ mrc p15, 0, r0, c1, c0, 0 @ SCTLR
+ bic r0, r0, #(1 << 2) @ Clear C bit
+ mcr p15, 0, r0, c1, c0, 0 @ SCTLR
+ isb
+ dsb
+
+ bl psci_v7_flush_dcache_all
+
+ clrex @ Why???
+
+ bl psci_disable_smp
+
+ pop {lr}
+ bx lr
+ENDPROC(psci_cpu_off_common)
+
+@ The stacks are allocated in reverse order, i.e.
+@ the stack for CPU0 has the highest memory address.
+@
+@ -------------------- __secure_stack_end
+@ | CPU0 target PC |
+@ |------------------|
+@ | |
+@ | CPU0 stack |
+@ | |
+@ |------------------| __secure_stack_end - 1KB
+@ | . |
+@ | . |
+@ | . |
+@ | . |
+@ -------------------- __secure_stack_start
+@
+@ This expects CPU ID in r0 and returns stack top in r0
+LENTRY(psci_get_cpu_stack_top)
+ @ stack top = __secure_stack_end - (cpuid << ARM_PSCI_STACK_SHIFT)
+ ldr r3, =__secure_stack_end
+ sub r0, r3, r0, LSL #ARM_PSCI_STACK_SHIFT
+ sub r0, r0, #4 @ Save space for target PC
+ bx lr
+ENDPROC(psci_get_cpu_stack_top)
+
+@ {r0, r1, r2, ip} from _do_nonsec_entry(kernel_entry, 0, machid, r2) in
+@ arch/arm/lib/bootm.c:boot_jump_linux() must remain unchanged across
+@ this function.
+ENTRY(psci_stack_setup)
+ mov r6, lr
+ mov r7, r0
+ bl psci_get_cpu_id @ CPU ID => r0
+ bl psci_get_cpu_stack_top @ stack top => r0
+ mov sp, r0
+ mov r0, r7
+ bx r6
+ENDPROC(psci_stack_setup)
+
+ENTRY(psci_arch_init)
+ mov pc, lr
+ENDPROC(psci_arch_init)
+.weak psci_arch_init
+
+ENTRY(psci_cpu_entry)
+ bl psci_enable_smp
+
+ bl _nonsec_init
+
+ bl psci_get_cpu_id @ CPU ID => r0
+ bl psci_get_target_pc @ target PC => r0
+ b _do_nonsec_entry
+ENDPROC(psci_cpu_entry)
+
.popsection
projects / u-boot / blobdiff