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-rw-r--r--arch/arm/Makefile4
-rw-r--r--arch/arm/boot/compressed/debug.S4
-rw-r--r--arch/arm/boot/compressed/vmlinux.lds.S9
-rw-r--r--arch/arm/include/asm/Kbuild1
-rw-r--r--arch/arm/include/asm/unaligned.h27
-rw-r--r--arch/arm/kernel/debug.S8
-rw-r--r--arch/arm/kernel/traps.c28
-rw-r--r--arch/arm/mm/nommu.c5
-rw-r--r--drivers/firmware/efi/libstub/Makefile6
-rw-r--r--drivers/firmware/efi/libstub/arm-stub.c7
-rw-r--r--drivers/pcmcia/sa1111_generic.c33
11 files changed, 102 insertions, 30 deletions
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 47d3a1ab08d2..36ae4454554c 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -44,10 +44,12 @@ endif
ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
KBUILD_CPPFLAGS += -mbig-endian
+CHECKFLAGS += -D__ARMEB__
AS += -EB
LD += -EB
else
KBUILD_CPPFLAGS += -mlittle-endian
+CHECKFLAGS += -D__ARMEL__
AS += -EL
LD += -EL
endif
@@ -131,7 +133,7 @@ endif
KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
-CHECKFLAGS += -D__arm__
+CHECKFLAGS += -D__arm__ -m32
#Default value
head-y := arch/arm/kernel/head$(MMUEXT).o
diff --git a/arch/arm/boot/compressed/debug.S b/arch/arm/boot/compressed/debug.S
index 5392ee63338f..8f6e37177de1 100644
--- a/arch/arm/boot/compressed/debug.S
+++ b/arch/arm/boot/compressed/debug.S
@@ -23,7 +23,11 @@ ENTRY(putc)
strb r0, [r1]
mov r0, #0x03 @ SYS_WRITEC
ARM( svc #0x123456 )
+#ifdef CONFIG_CPU_V7M
+ THUMB( bkpt #0xab )
+#else
THUMB( svc #0xab )
+#endif
mov pc, lr
.align 2
1: .word _GLOBAL_OFFSET_TABLE_ - .
diff --git a/arch/arm/boot/compressed/vmlinux.lds.S b/arch/arm/boot/compressed/vmlinux.lds.S
index b38dcef90756..e6bf6774c4bb 100644
--- a/arch/arm/boot/compressed/vmlinux.lds.S
+++ b/arch/arm/boot/compressed/vmlinux.lds.S
@@ -95,6 +95,15 @@ SECTIONS
_edata = .;
+ /*
+ * The image_end section appears after any additional loadable sections
+ * that the linker may decide to insert in the binary image. Having
+ * this symbol allows further debug in the near future.
+ */
+ .image_end (NOLOAD) : {
+ _edata_real = .;
+ }
+
_magic_sig = ZIMAGE_MAGIC(0x016f2818);
_magic_start = ZIMAGE_MAGIC(_start);
_magic_end = ZIMAGE_MAGIC(_edata);
diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild
index 721ab5ecfb9b..0f2c8a2a8131 100644
--- a/arch/arm/include/asm/Kbuild
+++ b/arch/arm/include/asm/Kbuild
@@ -20,7 +20,6 @@ generic-y += simd.h
generic-y += sizes.h
generic-y += timex.h
generic-y += trace_clock.h
-generic-y += unaligned.h
generated-y += mach-types.h
generated-y += unistd-nr.h
diff --git a/arch/arm/include/asm/unaligned.h b/arch/arm/include/asm/unaligned.h
new file mode 100644
index 000000000000..ab905ffcf193
--- /dev/null
+++ b/arch/arm/include/asm/unaligned.h
@@ -0,0 +1,27 @@
+#ifndef __ASM_ARM_UNALIGNED_H
+#define __ASM_ARM_UNALIGNED_H
+
+/*
+ * We generally want to set CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS on ARMv6+,
+ * but we don't want to use linux/unaligned/access_ok.h since that can lead
+ * to traps on unaligned stm/ldm or strd/ldrd.
+ */
+#include <asm/byteorder.h>
+
+#if defined(__LITTLE_ENDIAN)
+# include <linux/unaligned/le_struct.h>
+# include <linux/unaligned/be_byteshift.h>
+# include <linux/unaligned/generic.h>
+# define get_unaligned __get_unaligned_le
+# define put_unaligned __put_unaligned_le
+#elif defined(__BIG_ENDIAN)
+# include <linux/unaligned/be_struct.h>
+# include <linux/unaligned/le_byteshift.h>
+# include <linux/unaligned/generic.h>
+# define get_unaligned __get_unaligned_be
+# define put_unaligned __put_unaligned_be
+#else
+# error need to define endianess
+#endif
+
+#endif /* __ASM_ARM_UNALIGNED_H */
diff --git a/arch/arm/kernel/debug.S b/arch/arm/kernel/debug.S
index 611ded664d61..b795dc2408c0 100644
--- a/arch/arm/kernel/debug.S
+++ b/arch/arm/kernel/debug.S
@@ -124,7 +124,11 @@ ENTRY(printascii)
mov r1, r0
mov r0, #0x04 @ SYS_WRITE0
ARM( svc #0x123456 )
+#ifdef CONFIG_CPU_V7M
+ THUMB( bkpt #0xab )
+#else
THUMB( svc #0xab )
+#endif
ret lr
ENDPROC(printascii)
@@ -135,7 +139,11 @@ ENTRY(printch)
strb r0, [r1]
mov r0, #0x03 @ SYS_WRITEC
ARM( svc #0x123456 )
+#ifdef CONFIG_CPU_V7M
+ THUMB( bkpt #0xab )
+#else
THUMB( svc #0xab )
+#endif
ret lr
ENDPROC(printch)
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 948c648fea00..0fcd82f01388 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -154,30 +154,26 @@ static void dump_mem(const char *lvl, const char *str, unsigned long bottom,
set_fs(fs);
}
-static void dump_instr(const char *lvl, struct pt_regs *regs)
+static void __dump_instr(const char *lvl, struct pt_regs *regs)
{
unsigned long addr = instruction_pointer(regs);
const int thumb = thumb_mode(regs);
const int width = thumb ? 4 : 8;
- mm_segment_t fs;
char str[sizeof("00000000 ") * 5 + 2 + 1], *p = str;
int i;
/*
- * We need to switch to kernel mode so that we can use __get_user
- * to safely read from kernel space. Note that we now dump the
- * code first, just in case the backtrace kills us.
+ * Note that we now dump the code first, just in case the backtrace
+ * kills us.
*/
- fs = get_fs();
- set_fs(KERNEL_DS);
for (i = -4; i < 1 + !!thumb; i++) {
unsigned int val, bad;
if (thumb)
- bad = __get_user(val, &((u16 *)addr)[i]);
+ bad = get_user(val, &((u16 *)addr)[i]);
else
- bad = __get_user(val, &((u32 *)addr)[i]);
+ bad = get_user(val, &((u32 *)addr)[i]);
if (!bad)
p += sprintf(p, i == 0 ? "(%0*x) " : "%0*x ",
@@ -188,8 +184,20 @@ static void dump_instr(const char *lvl, struct pt_regs *regs)
}
}
printk("%sCode: %s\n", lvl, str);
+}
- set_fs(fs);
+static void dump_instr(const char *lvl, struct pt_regs *regs)
+{
+ mm_segment_t fs;
+
+ if (!user_mode(regs)) {
+ fs = get_fs();
+ set_fs(KERNEL_DS);
+ __dump_instr(lvl, regs);
+ set_fs(fs);
+ } else {
+ __dump_instr(lvl, regs);
+ }
}
#ifdef CONFIG_ARM_UNWIND
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 3b8e728cc944..91537d90f5f5 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -344,6 +344,11 @@ void __init arm_mm_memblock_reserve(void)
* reserved here.
*/
#endif
+ /*
+ * In any case, always ensure address 0 is never used as many things
+ * get very confused if 0 is returned as a legitimate address.
+ */
+ memblock_reserve(0, 1);
}
void __init adjust_lowmem_bounds(void)
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index dedf9bde44db..f3e8431565ea 100644
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -33,13 +33,14 @@ lib-y := efi-stub-helper.o gop.o secureboot.o
lib-$(CONFIG_RESET_ATTACK_MITIGATION) += tpm.o
# include the stub's generic dependencies from lib/ when building for ARM/arm64
-arm-deps := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c fdt_empty_tree.c fdt_sw.c sort.c
+arm-deps-y := fdt_rw.c fdt_ro.c fdt_wip.c fdt.c fdt_empty_tree.c fdt_sw.c
+arm-deps-$(CONFIG_ARM64) += sort.c
$(obj)/lib-%.o: $(srctree)/lib/%.c FORCE
$(call if_changed_rule,cc_o_c)
lib-$(CONFIG_EFI_ARMSTUB) += arm-stub.o fdt.o string.o random.o \
- $(patsubst %.c,lib-%.o,$(arm-deps))
+ $(patsubst %.c,lib-%.o,$(arm-deps-y))
lib-$(CONFIG_ARM) += arm32-stub.o
lib-$(CONFIG_ARM64) += arm64-stub.o
@@ -90,5 +91,4 @@ quiet_cmd_stubcopy = STUBCPY $@
# explicitly by the decompressor linker script.
#
STUBCOPY_FLAGS-$(CONFIG_ARM) += --rename-section .data=.data.efistub
-STUBCOPY_RM-$(CONFIG_ARM) += -R ___ksymtab+sort -R ___kcrctab+sort
STUBCOPY_RELOC-$(CONFIG_ARM) := R_ARM_ABS
diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c
index 1cb2d1c070c3..3061e4057483 100644
--- a/drivers/firmware/efi/libstub/arm-stub.c
+++ b/drivers/firmware/efi/libstub/arm-stub.c
@@ -349,7 +349,9 @@ void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
* The easiest way to find adjacent regions is to sort the memory map
* before traversing it.
*/
- sort(memory_map, map_size / desc_size, desc_size, cmp_mem_desc, NULL);
+ if (IS_ENABLED(CONFIG_ARM64))
+ sort(memory_map, map_size / desc_size, desc_size, cmp_mem_desc,
+ NULL);
for (l = 0; l < map_size; l += desc_size, prev = in) {
u64 paddr, size;
@@ -366,7 +368,8 @@ void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
* a 4k page size kernel to kexec a 64k page size kernel and
* vice versa.
*/
- if (!regions_are_adjacent(prev, in) ||
+ if ((IS_ENABLED(CONFIG_ARM64) &&
+ !regions_are_adjacent(prev, in)) ||
!regions_have_compatible_memory_type_attrs(prev, in)) {
paddr = round_down(in->phys_addr, SZ_64K);
diff --git a/drivers/pcmcia/sa1111_generic.c b/drivers/pcmcia/sa1111_generic.c
index 3d95dffcff7a..5ef351f87bfe 100644
--- a/drivers/pcmcia/sa1111_generic.c
+++ b/drivers/pcmcia/sa1111_generic.c
@@ -63,11 +63,12 @@
#define IDX_IRQ_S1_READY_NINT (3)
#define IDX_IRQ_S1_CD_VALID (4)
#define IDX_IRQ_S1_BVD1_STSCHG (5)
+#define NUM_IRQS (6)
void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
{
struct sa1111_pcmcia_socket *s = to_skt(skt);
- unsigned long status = sa1111_readl(s->dev->mapbase + PCSR);
+ u32 status = readl_relaxed(s->dev->mapbase + PCSR);
switch (skt->nr) {
case 0:
@@ -95,7 +96,7 @@ void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_sta
int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
{
struct sa1111_pcmcia_socket *s = to_skt(skt);
- unsigned int pccr_skt_mask, pccr_set_mask, val;
+ u32 pccr_skt_mask, pccr_set_mask, val;
unsigned long flags;
switch (skt->nr) {
@@ -123,10 +124,10 @@ int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_s
pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT;
local_irq_save(flags);
- val = sa1111_readl(s->dev->mapbase + PCCR);
+ val = readl_relaxed(s->dev->mapbase + PCCR);
val &= ~pccr_skt_mask;
val |= pccr_set_mask & pccr_skt_mask;
- sa1111_writel(val, s->dev->mapbase + PCCR);
+ writel_relaxed(val, s->dev->mapbase + PCCR);
local_irq_restore(flags);
return 0;
@@ -137,12 +138,18 @@ int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
{
struct sa1111_pcmcia_socket *s;
struct clk *clk;
- int i, ret = 0;
+ int i, ret = 0, irqs[NUM_IRQS];
clk = devm_clk_get(&dev->dev, NULL);
if (IS_ERR(clk))
return PTR_ERR(clk);
+ for (i = 0; i < NUM_IRQS; i++) {
+ irqs[i] = sa1111_get_irq(dev, i);
+ if (irqs[i] <= 0)
+ return irqs[i] ? : -ENXIO;
+ }
+
ops->socket_state = sa1111_pcmcia_socket_state;
for (i = 0; i < ops->nr; i++) {
@@ -156,16 +163,16 @@ int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
soc_pcmcia_init_one(&s->soc, ops, &dev->dev);
s->dev = dev;
if (s->soc.nr) {
- s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S1_READY_NINT];
- s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
+ s->soc.socket.pci_irq = irqs[IDX_IRQ_S1_READY_NINT];
+ s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S1_CD_VALID];
s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect";
- s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];
+ s->soc.stat[SOC_STAT_BVD1].irq = irqs[IDX_IRQ_S1_BVD1_STSCHG];
s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1";
} else {
- s->soc.socket.pci_irq = dev->irq[IDX_IRQ_S0_READY_NINT];
- s->soc.stat[SOC_STAT_CD].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
+ s->soc.socket.pci_irq = irqs[IDX_IRQ_S0_READY_NINT];
+ s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S0_CD_VALID];
s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect";
- s->soc.stat[SOC_STAT_BVD1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG];
+ s->soc.stat[SOC_STAT_BVD1].irq = irqs[IDX_IRQ_S0_BVD1_STSCHG];
s->soc.stat[SOC_STAT_BVD1].name = "SA1111 PCMCIA BVD1";
}
@@ -201,8 +208,8 @@ static int pcmcia_probe(struct sa1111_dev *dev)
/*
* Initialise the suspend state.
*/
- sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR);
- sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR);
+ writel_relaxed(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR);
+ writel_relaxed(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR);
ret = -ENODEV;
#ifdef CONFIG_SA1100_BADGE4
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-10 13:17:21 +0100