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-rw-r--r--arch/powerpc/kernel/btext.c4
-rw-r--r--arch/powerpc/kernel/cputable.c36
-rw-r--r--arch/powerpc/kernel/entry_32.S29
-rw-r--r--arch/powerpc/kernel/head_64.S2
-rw-r--r--arch/powerpc/kernel/idle.c2
-rw-r--r--arch/powerpc/kernel/misc_32.S32
-rw-r--r--arch/powerpc/kernel/process.c2
-rw-r--r--arch/powerpc/kernel/prom.c12
-rw-r--r--arch/powerpc/kernel/prom_init.c2
-rw-r--r--arch/powerpc/kernel/setup_64.c19
-rw-r--r--arch/powerpc/kernel/swsusp_32.S2
-rw-r--r--arch/powerpc/kernel/time.c37
-rw-r--r--arch/powerpc/kernel/vmlinux.lds.S3
13 files changed, 116 insertions, 66 deletions
diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c
index 3ef51fb..9c74fdf 100644
--- a/arch/powerpc/kernel/btext.c
+++ b/arch/powerpc/kernel/btext.c
@@ -186,7 +186,9 @@ int btext_initialize(struct device_node *np)
pitch = *prop;
if (pitch == 1)
pitch = 0x1000;
- prop = of_get_property(np, "address", NULL);
+ prop = of_get_property(np, "linux,bootx-addr", NULL);
+ if (prop == NULL)
+ prop = of_get_property(np, "address", NULL);
if (prop)
address = *prop;
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index d3fb7d0..9ed351f 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -1104,6 +1104,16 @@ static struct cpu_spec __initdata cpu_specs[] = {
{
.pvr_mask = 0xf0000fff,
.pvr_value = 0x40000850,
+ .cpu_name = "440GR Rev. A",
+ .cpu_features = CPU_FTRS_44X,
+ .cpu_user_features = COMMON_USER_BOOKE,
+ .icache_bsize = 32,
+ .dcache_bsize = 32,
+ .platform = "ppc440",
+ },
+ { /* Use logical PVR for 440EP (logical pvr = pvr | 0x8) */
+ .pvr_mask = 0xf0000fff,
+ .pvr_value = 0x40000858,
.cpu_name = "440EP Rev. A",
.cpu_features = CPU_FTRS_44X,
.cpu_user_features = COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
@@ -1115,28 +1125,27 @@ static struct cpu_spec __initdata cpu_specs[] = {
{
.pvr_mask = 0xf0000fff,
.pvr_value = 0x400008d3,
- .cpu_name = "440EP Rev. B",
+ .cpu_name = "440GR Rev. B",
.cpu_features = CPU_FTRS_44X,
.cpu_user_features = COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
.icache_bsize = 32,
.dcache_bsize = 32,
- .cpu_setup = __setup_cpu_440ep,
.platform = "ppc440",
},
- { /* 440EPX */
- .pvr_mask = 0xf0000ffb,
- .pvr_value = 0x200008D0,
- .cpu_name = "440EPX",
+ { /* Use logical PVR for 440EP (logical pvr = pvr | 0x8) */
+ .pvr_mask = 0xf0000fff,
+ .pvr_value = 0x400008db,
+ .cpu_name = "440EP Rev. B",
.cpu_features = CPU_FTRS_44X,
.cpu_user_features = COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
.icache_bsize = 32,
.dcache_bsize = 32,
- .cpu_setup = __setup_cpu_440epx,
+ .cpu_setup = __setup_cpu_440ep,
.platform = "ppc440",
},
{ /* 440GRX */
.pvr_mask = 0xf0000ffb,
- .pvr_value = 0x200008D8,
+ .pvr_value = 0x200008D0,
.cpu_name = "440GRX",
.cpu_features = CPU_FTRS_44X,
.cpu_user_features = COMMON_USER_BOOKE,
@@ -1145,6 +1154,17 @@ static struct cpu_spec __initdata cpu_specs[] = {
.cpu_setup = __setup_cpu_440grx,
.platform = "ppc440",
},
+ { /* Use logical PVR for 440EPx (logical pvr = pvr | 0x8) */
+ .pvr_mask = 0xf0000ffb,
+ .pvr_value = 0x200008D8,
+ .cpu_name = "440EPX",
+ .cpu_features = CPU_FTRS_44X,
+ .cpu_user_features = COMMON_USER_BOOKE | PPC_FEATURE_HAS_FPU,
+ .icache_bsize = 32,
+ .dcache_bsize = 32,
+ .cpu_setup = __setup_cpu_440epx,
+ .platform = "ppc440",
+ },
{ /* 440GP Rev. B */
.pvr_mask = 0xf0000fff,
.pvr_value = 0x40000440,
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 21d889e..69a91bd 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -244,6 +244,16 @@ syscall_exit_cont:
andis. r10,r0,DBCR0_IC@h
bnel- load_dbcr0
#endif
+#ifdef CONFIG_44x
+ lis r4,icache_44x_need_flush@ha
+ lwz r5,icache_44x_need_flush@l(r4)
+ cmplwi cr0,r5,0
+ bne- 2f
+1:
+#endif /* CONFIG_44x */
+BEGIN_FTR_SECTION
+ lwarx r7,0,r1
+END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX)
stwcx. r0,0,r1 /* to clear the reservation */
lwz r4,_LINK(r1)
lwz r5,_CCR(r1)
@@ -258,6 +268,12 @@ syscall_exit_cont:
mtspr SPRN_SRR1,r8
SYNC
RFI
+#ifdef CONFIG_44x
+2: li r7,0
+ iccci r0,r0
+ stw r7,icache_44x_need_flush@l(r4)
+ b 1b
+#endif /* CONFIG_44x */
66: li r3,-ENOSYS
b ret_from_syscall
@@ -683,6 +699,16 @@ resume_kernel:
/* interrupts are hard-disabled at this point */
restore:
+#ifdef CONFIG_44x
+ lis r4,icache_44x_need_flush@ha
+ lwz r5,icache_44x_need_flush@l(r4)
+ cmplwi cr0,r5,0
+ beq+ 1f
+ li r6,0
+ iccci r0,r0
+ stw r6,icache_44x_need_flush@l(r4)
+1:
+#endif /* CONFIG_44x */
lwz r0,GPR0(r1)
lwz r2,GPR2(r1)
REST_4GPRS(3, r1)
@@ -694,6 +720,9 @@ restore:
mtctr r11
PPC405_ERR77(0,r1)
+BEGIN_FTR_SECTION
+ lwarx r11,0,r1
+END_FTR_SECTION_IFSET(CPU_FTR_NEED_PAIRED_STWCX)
stwcx. r0,0,r1 /* to clear the reservation */
#if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE))
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 97c5857..c349868 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -904,7 +904,7 @@ handle_page_fault:
*/
12: bl .save_nvgprs
addi r3,r1,STACK_FRAME_OVERHEAD
- lwz r4,_DAR(r1)
+ ld r4,_DAR(r1)
bl .low_hash_fault
b .ret_from_except
diff --git a/arch/powerpc/kernel/idle.c b/arch/powerpc/kernel/idle.c
index abd2957..c3cf0e8 100644
--- a/arch/powerpc/kernel/idle.c
+++ b/arch/powerpc/kernel/idle.c
@@ -122,7 +122,7 @@ static ctl_table powersave_nap_sysctl_root[] = {
{
.ctl_name = CTL_KERN,
.procname = "kernel",
- .mode = 0755,
+ .mode = 0555,
.child = powersave_nap_ctl_table,
},
{}
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 8533de5..8b642ab 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -288,7 +288,16 @@ _GLOBAL(_tlbia)
*/
_GLOBAL(_tlbie)
#if defined(CONFIG_40x)
+ /* We run the search with interrupts disabled because we have to change
+ * the PID and I don't want to preempt when that happens.
+ */
+ mfmsr r5
+ mfspr r6,SPRN_PID
+ wrteei 0
+ mtspr SPRN_PID,r4
tlbsx. r3, 0, r3
+ mtspr SPRN_PID,r6
+ wrtee r5
bne 10f
sync
/* There are only 64 TLB entries, so r3 < 64, which means bit 25 is clear.
@@ -297,23 +306,23 @@ _GLOBAL(_tlbie)
tlbwe r3, r3, TLB_TAG
isync
10:
+
#elif defined(CONFIG_44x)
- mfspr r4,SPRN_MMUCR
- mfspr r5,SPRN_PID /* Get PID */
- rlwimi r4,r5,0,24,31 /* Set TID */
+ mfspr r5,SPRN_MMUCR
+ rlwimi r5,r4,0,24,31 /* Set TID */
/* We have to run the search with interrupts disabled, even critical
* and debug interrupts (in fact the only critical exceptions we have
* are debug and machine check). Otherwise an interrupt which causes
* a TLB miss can clobber the MMUCR between the mtspr and the tlbsx. */
- mfmsr r5
+ mfmsr r4
lis r6,(MSR_EE|MSR_CE|MSR_ME|MSR_DE)@ha
addi r6,r6,(MSR_EE|MSR_CE|MSR_ME|MSR_DE)@l
- andc r6,r5,r6
+ andc r6,r4,r6
mtmsr r6
- mtspr SPRN_MMUCR,r4
+ mtspr SPRN_MMUCR,r5
tlbsx. r3, 0, r3
- mtmsr r5
+ mtmsr r4
bne 10f
sync
/* There are only 64 TLB entries, so r3 < 64,
@@ -534,12 +543,21 @@ END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
addi r3,r3,L1_CACHE_BYTES
bdnz 0b
sync
+#ifndef CONFIG_44x
+ /* We don't flush the icache on 44x. Those have a virtual icache
+ * and we don't have access to the virtual address here (it's
+ * not the page vaddr but where it's mapped in user space). The
+ * flushing of the icache on these is handled elsewhere, when
+ * a change in the address space occurs, before returning to
+ * user space
+ */
mtctr r4
1: icbi 0,r6
addi r6,r6,L1_CACHE_BYTES
bdnz 1b
sync
isync
+#endif /* CONFIG_44x */
blr
/*
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index b9d8837..41e13f4 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -350,7 +350,7 @@ struct task_struct *__switch_to(struct task_struct *prev,
local_irq_save(flags);
account_system_vtime(current);
- account_process_vtime(current);
+ account_process_tick(current, 0);
calculate_steal_time();
last = _switch(old_thread, new_thread);
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 9f329a8..acc0d24 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -697,6 +697,18 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
prop = of_get_flat_dt_prop(node, "cpu-version", NULL);
if (prop && (*prop & 0xff000000) == 0x0f000000)
identify_cpu(0, *prop);
+#if defined(CONFIG_44x) && defined(CONFIG_PPC_FPU)
+ /*
+ * Since 440GR(x)/440EP(x) processors have the same pvr,
+ * we check the node path and set bit 28 in the cur_cpu_spec
+ * pvr for EP(x) processor version. This bit is always 0 in
+ * the "real" pvr. Then we call identify_cpu again with
+ * the new logical pvr to enable FPU support.
+ */
+ if (strstr(uname, "440EP")) {
+ identify_cpu(0, cur_cpu_spec->pvr_value | 0x8);
+ }
+#endif
}
check_cpu_feature_properties(node);
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 1db10f7..1add6ef 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -1244,7 +1244,7 @@ static void __init prom_initialize_tce_table(void)
local_alloc_bottom = base;
/* It seems OF doesn't null-terminate the path :-( */
- memset(path, 0, sizeof(path));
+ memset(path, 0, PROM_SCRATCH_SIZE);
/* Call OF to setup the TCE hardware */
if (call_prom("package-to-path", 3, 1, node,
path, PROM_SCRATCH_SIZE-1) == PROM_ERROR) {
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index ede77db..3b1529c 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -291,23 +291,16 @@ static void __init initialize_cache_info(void)
if ( num_cpus == 1 ) {
const u32 *sizep, *lsizep;
u32 size, lsize;
- const char *dc, *ic;
-
- /* Then read cache informations */
- if (machine_is(powermac)) {
- dc = "d-cache-block-size";
- ic = "i-cache-block-size";
- } else {
- dc = "d-cache-line-size";
- ic = "i-cache-line-size";
- }
size = 0;
lsize = cur_cpu_spec->dcache_bsize;
sizep = of_get_property(np, "d-cache-size", NULL);
if (sizep != NULL)
size = *sizep;
- lsizep = of_get_property(np, dc, NULL);
+ lsizep = of_get_property(np, "d-cache-block-size", NULL);
+ /* fallback if block size missing */
+ if (lsizep == NULL)
+ lsizep = of_get_property(np, "d-cache-line-size", NULL);
if (lsizep != NULL)
lsize = *lsizep;
if (sizep == 0 || lsizep == 0)
@@ -324,7 +317,9 @@ static void __init initialize_cache_info(void)
sizep = of_get_property(np, "i-cache-size", NULL);
if (sizep != NULL)
size = *sizep;
- lsizep = of_get_property(np, ic, NULL);
+ lsizep = of_get_property(np, "i-cache-block-size", NULL);
+ if (lsizep == NULL)
+ lsizep = of_get_property(np, "i-cache-line-size", NULL);
if (lsizep != NULL)
lsize = *lsizep;
if (sizep == 0 || lsizep == 0)
diff --git a/arch/powerpc/kernel/swsusp_32.S b/arch/powerpc/kernel/swsusp_32.S
index 69e8f86..77fc766 100644
--- a/arch/powerpc/kernel/swsusp_32.S
+++ b/arch/powerpc/kernel/swsusp_32.S
@@ -133,10 +133,12 @@ _GLOBAL(swsusp_arch_suspend)
/* Resume code */
_GLOBAL(swsusp_arch_resume)
+#ifdef CONFIG_ALTIVEC
/* Stop pending alitvec streams and memory accesses */
BEGIN_FTR_SECTION
DSSALL
END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
+#endif
sync
/* Disable MSR:DR to make sure we don't take a TLB or
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 9eb3284..c0d7772 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -259,7 +259,7 @@ void account_system_vtime(struct task_struct *tsk)
* user and system time records.
* Must be called with interrupts disabled.
*/
-void account_process_vtime(struct task_struct *tsk)
+void account_process_tick(struct task_struct *tsk, int user_tick)
{
cputime_t utime, utimescaled;
@@ -274,18 +274,6 @@ void account_process_vtime(struct task_struct *tsk)
account_user_time_scaled(tsk, utimescaled);
}
-static void account_process_time(struct pt_regs *regs)
-{
- int cpu = smp_processor_id();
-
- account_process_vtime(current);
- run_local_timers();
- if (rcu_pending(cpu))
- rcu_check_callbacks(cpu, user_mode(regs));
- scheduler_tick();
- run_posix_cpu_timers(current);
-}
-
/*
* Stuff for accounting stolen time.
*/
@@ -375,7 +363,6 @@ static void snapshot_purr(void)
#else /* ! CONFIG_VIRT_CPU_ACCOUNTING */
#define calc_cputime_factors()
-#define account_process_time(regs) update_process_times(user_mode(regs))
#define calculate_steal_time() do { } while (0)
#endif
@@ -586,7 +573,7 @@ void timer_interrupt(struct pt_regs * regs)
/* not time for this event yet */
now = per_cpu(decrementer_next_tb, cpu) - now;
if (now <= DECREMENTER_MAX)
- set_dec((unsigned int)now - 1);
+ set_dec((int)now);
return;
}
old_regs = set_irq_regs(regs);
@@ -599,20 +586,8 @@ void timer_interrupt(struct pt_regs * regs)
get_lppaca()->int_dword.fields.decr_int = 0;
#endif
- /*
- * We cannot disable the decrementer, so in the period
- * between this cpu's being marked offline in cpu_online_map
- * and calling stop-self, it is taking timer interrupts.
- * Avoid calling into the scheduler rebalancing code if this
- * is the case.
- */
- if (!cpu_is_offline(cpu))
- account_process_time(regs);
-
if (evt->event_handler)
evt->event_handler(evt);
- else
- evt->set_next_event(DECREMENTER_MAX, evt);
#ifdef CONFIG_PPC_ISERIES
if (firmware_has_feature(FW_FEATURE_ISERIES) && hvlpevent_is_pending())
@@ -836,9 +811,6 @@ static int decrementer_set_next_event(unsigned long evt,
struct clock_event_device *dev)
{
__get_cpu_var(decrementer_next_tb) = get_tb_or_rtc() + evt;
- /* The decrementer interrupts on the 0 -> -1 transition */
- if (evt)
- --evt;
set_dec(evt);
return 0;
}
@@ -857,7 +829,7 @@ static void register_decrementer_clockevent(int cpu)
*dec = decrementer_clockevent;
dec->cpumask = cpumask_of_cpu(cpu);
- printk(KERN_INFO "clockevent: %s mult[%lx] shift[%d] cpu[%d]\n",
+ printk(KERN_DEBUG "clockevent: %s mult[%lx] shift[%d] cpu[%d]\n",
dec->name, dec->mult, dec->shift, cpu);
clockevents_register_device(dec);
@@ -871,7 +843,8 @@ void init_decrementer_clockevent(void)
decrementer_clockevent.shift);
decrementer_clockevent.max_delta_ns =
clockevent_delta2ns(DECREMENTER_MAX, &decrementer_clockevent);
- decrementer_clockevent.min_delta_ns = 1000;
+ decrementer_clockevent.min_delta_ns =
+ clockevent_delta2ns(2, &decrementer_clockevent);
register_decrementer_clockevent(cpu);
}
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 823a8cb..f66fa5d 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -37,11 +37,10 @@ SECTIONS
ALIGN_FUNCTION();
*(.text.head)
_text = .;
- TEXT_TEXT
+ *(.text .fixup .text.init.refok .exit.text.refok)
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
- *(.fixup)
#ifdef CONFIG_PPC32
*(.got1)
generated by cgit v1.1 at 2025-08-16 19:58:08 +0000