From f959ed2fdb92f2e96ae6ebd547e0d418be686a2b Mon Sep 17 00:00:00 2001
From: Chris Zankel <chris@zankel.net>
Date: Wed, 3 Oct 2012 15:02:19 -0700
Subject: [PATCH 01/27] MAINTAINERS: add Max Filippov as an xtensa port
maintainer
Signed-off-by: Chris Zankel <chris@zankel.net>
---
MAINTAINERS | 2 ++
1 file changed, 2 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 9a6c4da3b2ff..21e6baa00f1c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6802,6 +6802,8 @@ F: drivers/char/tlclk.c
TENSILICA XTENSA PORT (xtensa)
M: Chris Zankel <chris@zankel.net>
+M: Max Filippov <jcmvbkbc@gmail.com>
+L: linux-xtensa@linux-xtensa.org
S: Maintained
F: arch/xtensa/
From f6a03a12ecdbe0dd80a55f6df3b7206c5a403a49 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:31 +0400
Subject: [PATCH 02/27] xtensa: fix linker script transformation for
.text.unlikely
Now that binutils generate *.unlikely sections which don't follow
documented (info as) literal section naming rules, section name
transformation script doesn't work well resulting in the following
errors at vmlinux link time:
main.c:(.text.unlikely+0x3): dangerous relocation: l32r: literal
placed after use: .literal.unlikely
Fix section name transformation script by adding specific rule for
.text.unlikely sections.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/kernel/Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/xtensa/kernel/Makefile b/arch/xtensa/kernel/Makefile
index 59fc3fe15572..0f9f35fc191a 100644
--- a/arch/xtensa/kernel/Makefile
+++ b/arch/xtensa/kernel/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_MODULES) += xtensa_ksyms.o module.o
# Replicate rules in scripts/Makefile.build
sed-y = -e 's/\*(\(\.[a-z]*it\|\.ref\|\)\.text)/*(\1.literal \1.text)/g' \
+ -e 's/\.text\.unlikely/.literal.unlikely .text.unlikely/g' \
-e 's/\*(\(\.text\.[a-z]*\))/*(\1.literal \1)/g'
quiet_cmd__cpp_lds_S = LDS $@
From 6aebb64ad415c7d63ad4db5b401f960fe7b1d972 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:32 +0400
Subject: [PATCH 03/27] xtensa: ISS: only build networking if configured
This allows building kernel in allnoconfig configuration.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/platforms/iss/Makefile | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/xtensa/platforms/iss/Makefile b/arch/xtensa/platforms/iss/Makefile
index af96e314d71f..c61dd3961b17 100644
--- a/arch/xtensa/platforms/iss/Makefile
+++ b/arch/xtensa/platforms/iss/Makefile
@@ -4,5 +4,5 @@
# "prom monitor" library routines under Linux.
#
-obj-y = io.o console.o setup.o network.o
-
+obj-y = io.o console.o setup.o
+obj-$(CONFIG_NET) += network.o
From 2e6ee5ec88dd9d4d4e934709200259538160039d Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:33 +0400
Subject: [PATCH 04/27] xtensa/PCI: fix WT caching attribute
Fix caching attributes setup providing correct _PAGE_CA_* names.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/kernel/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/xtensa/kernel/pci.c b/arch/xtensa/kernel/pci.c
index 69759e9cb3ea..43e9fdce40d6 100644
--- a/arch/xtensa/kernel/pci.c
+++ b/arch/xtensa/kernel/pci.c
@@ -341,7 +341,7 @@ __pci_mmap_set_pgprot(struct pci_dev *dev, struct vm_area_struct *vma,
int prot = pgprot_val(vma->vm_page_prot);
/* Set to write-through */
- prot &= ~_PAGE_NO_CACHE;
+ prot = (prot & _PAGE_CA_MASK) | _PAGE_CA_WT;
#if 0
if (!write_combine)
prot |= _PAGE_WRITETHRU;
From 33c8213d6930cfa1d09e2912b9e2d59f251c33b7 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:34 +0400
Subject: [PATCH 05/27] xtensa: fix xtensa_irq_unmask calls
xtensa_irq_disable/xtensa_irq_enable used to call xtensa_irq_unmask with
wrong argument.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/kernel/irq.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c
index 4340ee076bd5..98e77c3ef1c3 100644
--- a/arch/xtensa/kernel/irq.c
+++ b/arch/xtensa/kernel/irq.c
@@ -84,12 +84,12 @@ static void xtensa_irq_unmask(struct irq_data *d)
static void xtensa_irq_enable(struct irq_data *d)
{
variant_irq_enable(d->irq);
- xtensa_irq_unmask(d->irq);
+ xtensa_irq_unmask(d);
}
static void xtensa_irq_disable(struct irq_data *d)
{
- xtensa_irq_mask(d->irq);
+ xtensa_irq_mask(d);
variant_irq_disable(d->irq);
}
From 717460ee3e8399eb66799cac0bb83217475b7027 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:35 +0400
Subject: [PATCH 06/27] xtensa: ISS: fix __simc implementation
Do not rely on compiler implicitly placing function arguments into
specifc registers, place them explicitly.
Move __simc and related helpers to platform/simcall.h
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/platforms/iss/console.c | 13 -----
.../platforms/iss/include/platform/simcall.h | 53 +++++++++++++++++++
arch/xtensa/platforms/iss/network.c | 49 -----------------
3 files changed, 53 insertions(+), 62 deletions(-)
diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index f9726f6afdf1..daee86cdf0cc 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -41,19 +41,6 @@ static struct timer_list serial_timer;
static DEFINE_SPINLOCK(timer_lock);
-int errno;
-
-static int __simc (int a, int b, int c, int d, int e, int f) __attribute__((__noinline__));
-static int __simc (int a, int b, int c, int d, int e, int f)
-{
- int ret;
- __asm__ __volatile__ ("simcall\n"
- "mov %0, a2\n"
- "mov %1, a3\n" : "=a" (ret), "=a" (errno)
- : : "a2", "a3");
- return ret;
-}
-
static char *serial_version = "0.1";
static char *serial_name = "ISS serial driver";
diff --git a/arch/xtensa/platforms/iss/include/platform/simcall.h b/arch/xtensa/platforms/iss/include/platform/simcall.h
index b7952c06a2b7..8c43bfea05e1 100644
--- a/arch/xtensa/platforms/iss/include/platform/simcall.h
+++ b/arch/xtensa/platforms/iss/include/platform/simcall.h
@@ -57,6 +57,59 @@
#define XTISS_SELECT_ONE_WRITE 2
#define XTISS_SELECT_ONE_EXCEPT 3
+static int errno;
+
+static inline int __simc(int a, int b, int c, int d, int e, int f)
+{
+ int ret;
+ register int a1 asm("a2") = a;
+ register int b1 asm("a3") = b;
+ register int c1 asm("a4") = c;
+ register int d1 asm("a5") = d;
+ register int e1 asm("a6") = e;
+ register int f1 asm("a7") = f;
+ __asm__ __volatile__ (
+ "simcall\n"
+ "mov %0, a2\n"
+ "mov %1, a3\n"
+ : "=a" (ret), "=a" (errno), "+r"(a1), "+r"(b1)
+ : "r"(c1), "r"(d1), "r"(e1), "r"(f1)
+ : );
+ return ret;
+}
+
+static inline int simc_open(char *file, int flags, int mode)
+{
+ return __simc(SYS_open, (int) file, flags, mode, 0, 0);
+}
+
+static inline int simc_close(int fd)
+{
+ return __simc(SYS_close, fd, 0, 0, 0, 0);
+}
+
+static inline int simc_ioctl(int fd, int request, void *arg)
+{
+ return __simc(SYS_ioctl, fd, request, (int) arg, 0, 0);
+}
+
+static inline int simc_read(int fd, void *buf, size_t count)
+{
+ return __simc(SYS_read, fd, (int) buf, count, 0, 0);
+}
+
+static inline int simc_write(int fd, void *buf, size_t count)
+{
+ return __simc(SYS_write, fd, (int) buf, count, 0, 0);
+}
+
+static inline int simc_poll(int fd)
+{
+ struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
+
+ return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv,
+ 0, 0);
+}
#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */
diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c
index 7dde24456427..7d0fea6d7f20 100644
--- a/arch/xtensa/platforms/iss/network.c
+++ b/arch/xtensa/platforms/iss/network.c
@@ -101,55 +101,6 @@ struct iss_net_private {
};
-/* ======================= ISS SIMCALL INTERFACE =========================== */
-
-/* Note: __simc must _not_ be declared inline! */
-
-static int errno;
-
-static int __simc (int a, int b, int c, int d, int e, int f) __attribute__((__noinline__));
-static int __simc (int a, int b, int c, int d, int e, int f)
-{
- int ret;
- __asm__ __volatile__ ("simcall\n"
- "mov %0, a2\n"
- "mov %1, a3\n" : "=a" (ret), "=a" (errno)
- : : "a2", "a3");
- return ret;
-}
-
-static int inline simc_open(char *file, int flags, int mode)
-{
- return __simc(SYS_open, (int) file, flags, mode, 0, 0);
-}
-
-static int inline simc_close(int fd)
-{
- return __simc(SYS_close, fd, 0, 0, 0, 0);
-}
-
-static int inline simc_ioctl(int fd, int request, void *arg)
-{
- return __simc(SYS_ioctl, fd, request, (int) arg, 0, 0);
-}
-
-static int inline simc_read(int fd, void *buf, size_t count)
-{
- return __simc(SYS_read, fd, (int) buf, count, 0, 0);
-}
-
-static int inline simc_write(int fd, void *buf, size_t count)
-{
- return __simc(SYS_write, fd, (int) buf, count, 0, 0);
-}
-
-static int inline simc_poll(int fd)
-{
- struct timeval tv = { .tv_sec = 0, .tv_usec = 0 };
-
- return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&tv,0,0);
-}
-
/* ================================ HELPERS ================================ */
From af42e970b6097a34cb2b93ec4c12c2a226b1d008 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:38 +0400
Subject: [PATCH 07/27] modpost: fix modpost warnings for xtensa
Suppress warnings for two informational sections (.xt.lit and .xt.prop)
used by the Xtensa architecture.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
scripts/mod/modpost.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 68e9f5ed0a6f..00f7512a217f 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -827,6 +827,8 @@ static const char *section_white_list[] =
".note*",
".got*",
".toc*",
+ ".xt.prop", /* xtensa */
+ ".xt.lit", /* xtensa */
NULL
};
From 02f3774877382bac52972a677c2c5fbd3532a1a1 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:39 +0400
Subject: [PATCH 08/27] xtensa: fix ioremap
- fix ioremap_nocache to actually return non-cacheable address
- add explicit ioremap_cache
- fix KIO aperture checking arithmetic
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/include/asm/io.h | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h
index 4beb43c087d3..4f66dfc103a5 100644
--- a/arch/xtensa/include/asm/io.h
+++ b/arch/xtensa/include/asm/io.h
@@ -67,12 +67,12 @@ static inline void * phys_to_virt(unsigned long address)
* Return the virtual (cached) address for the specified bus memory.
* Note that we currently don't support any address outside the KIO segment.
*/
-
-static inline void *ioremap(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap_nocache(unsigned long offset,
+ unsigned long size)
{
#ifdef CONFIG_MMU
if (offset >= XCHAL_KIO_PADDR
- && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
+ && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
else
BUG();
@@ -81,11 +81,12 @@ static inline void *ioremap(unsigned long offset, unsigned long size)
#endif
}
-static inline void *ioremap_nocache(unsigned long offset, unsigned long size)
+static inline void __iomem *ioremap_cache(unsigned long offset,
+ unsigned long size)
{
#ifdef CONFIG_MMU
if (offset >= XCHAL_KIO_PADDR
- && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
+ && offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
else
BUG();
@@ -94,7 +95,14 @@ static inline void *ioremap_nocache(unsigned long offset, unsigned long size)
#endif
}
-static inline void iounmap(void *addr)
+#define ioremap_wc ioremap_nocache
+
+static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
+{
+ return ioremap_nocache(offset, size);
+}
+
+static inline void iounmap(volatile void __iomem *addr)
{
}
From d38efc1f150f38b7f593ac7e26789c550d4bc183 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:40 +0400
Subject: [PATCH 09/27] xtensa: adopt generic io routines
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/Kconfig | 2 +
arch/xtensa/include/asm/io.h | 156 ++---------------------------------
arch/xtensa/kernel/Makefile | 2 +-
arch/xtensa/kernel/io.c | 75 -----------------
drivers/usb/musb/musb_io.h | 3 +-
5 files changed, 14 insertions(+), 224 deletions(-)
delete mode 100644 arch/xtensa/kernel/io.c
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 8ed64cfae4ff..2debe94443b2 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -11,6 +11,8 @@ config XTENSA
select HAVE_GENERIC_HARDIRQS
select GENERIC_IRQ_SHOW
select GENERIC_CPU_DEVICES
+ select MODULES_USE_ELF_RELA
+ select GENERIC_PCI_IOMAP
help
Xtensa processors are 32-bit RISC machines designed by Tensilica
primarily for embedded systems. These processors are both
diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h
index 4f66dfc103a5..e6be5b9091c2 100644
--- a/arch/xtensa/include/asm/io.h
+++ b/arch/xtensa/include/asm/io.h
@@ -25,74 +25,31 @@
#define XCHAL_KIO_SIZE 0x10000000
#define IOADDR(x) (XCHAL_KIO_BYPASS_VADDR + (x))
+#define IO_SPACE_LIMIT ~0
+#ifdef CONFIG_MMU
/*
- * swap functions to change byte order from little-endian to big-endian and
- * vice versa.
- */
-
-static inline unsigned short _swapw (unsigned short v)
-{
- return (v << 8) | (v >> 8);
-}
-
-static inline unsigned int _swapl (unsigned int v)
-{
- return (v << 24) | ((v & 0xff00) << 8) | ((v >> 8) & 0xff00) | (v >> 24);
-}
-
-/*
- * Change virtual addresses to physical addresses and vv.
- * These are trivial on the 1:1 Linux/Xtensa mapping
- */
-
-static inline unsigned long virt_to_phys(volatile void * address)
-{
- return __pa(address);
-}
-
-static inline void * phys_to_virt(unsigned long address)
-{
- return __va(address);
-}
-
-/*
- * virt_to_bus and bus_to_virt are deprecated.
- */
-
-#define virt_to_bus(x) virt_to_phys(x)
-#define bus_to_virt(x) phys_to_virt(x)
-
-/*
- * Return the virtual (cached) address for the specified bus memory.
+ * Return the virtual address for the specified bus memory.
* Note that we currently don't support any address outside the KIO segment.
*/
static inline void __iomem *ioremap_nocache(unsigned long offset,
unsigned long size)
{
-#ifdef CONFIG_MMU
if (offset >= XCHAL_KIO_PADDR
&& offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
else
BUG();
-#else
- return (void *)offset;
-#endif
}
static inline void __iomem *ioremap_cache(unsigned long offset,
unsigned long size)
{
-#ifdef CONFIG_MMU
if (offset >= XCHAL_KIO_PADDR
&& offset - XCHAL_KIO_PADDR < XCHAL_KIO_SIZE)
return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
else
BUG();
-#else
- return (void *)offset;
-#endif
}
#define ioremap_wc ioremap_nocache
@@ -105,112 +62,17 @@ static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
static inline void iounmap(volatile void __iomem *addr)
{
}
+#endif /* CONFIG_MMU */
/*
* Generic I/O
*/
-
-#define readb(addr) \
- ({ unsigned char __v = (*(volatile unsigned char *)(addr)); __v; })
-#define readw(addr) \
- ({ unsigned short __v = (*(volatile unsigned short *)(addr)); __v; })
-#define readl(addr) \
- ({ unsigned int __v = (*(volatile unsigned int *)(addr)); __v; })
-#define writeb(b, addr) (void)((*(volatile unsigned char *)(addr)) = (b))
-#define writew(b, addr) (void)((*(volatile unsigned short *)(addr)) = (b))
-#define writel(b, addr) (void)((*(volatile unsigned int *)(addr)) = (b))
-
-static inline __u8 __raw_readb(const volatile void __iomem *addr)
-{
- return *(__force volatile __u8 *)(addr);
-}
-static inline __u16 __raw_readw(const volatile void __iomem *addr)
-{
- return *(__force volatile __u16 *)(addr);
-}
-static inline __u32 __raw_readl(const volatile void __iomem *addr)
-{
- return *(__force volatile __u32 *)(addr);
-}
-static inline void __raw_writeb(__u8 b, volatile void __iomem *addr)
-{
- *(__force volatile __u8 *)(addr) = b;
-}
-static inline void __raw_writew(__u16 b, volatile void __iomem *addr)
-{
- *(__force volatile __u16 *)(addr) = b;
-}
-static inline void __raw_writel(__u32 b, volatile void __iomem *addr)
-{
- *(__force volatile __u32 *)(addr) = b;
-}
-
-/* These are the definitions for the x86 IO instructions
- * inb/inw/inl/outb/outw/outl, the "string" versions
- * insb/insw/insl/outsb/outsw/outsl, and the "pausing" versions
- * inb_p/inw_p/...
- * The macros don't do byte-swapping.
- */
-
-#define inb(port) readb((u8 *)((port)))
-#define outb(val, port) writeb((val),(u8 *)((unsigned long)(port)))
-#define inw(port) readw((u16 *)((port)))
-#define outw(val, port) writew((val),(u16 *)((unsigned long)(port)))
-#define inl(port) readl((u32 *)((port)))
-#define outl(val, port) writel((val),(u32 *)((unsigned long)(port)))
-
-#define inb_p(port) inb((port))
-#define outb_p(val, port) outb((val), (port))
-#define inw_p(port) inw((port))
-#define outw_p(val, port) outw((val), (port))
-#define inl_p(port) inl((port))
-#define outl_p(val, port) outl((val), (port))
-
-extern void insb (unsigned long port, void *dst, unsigned long count);
-extern void insw (unsigned long port, void *dst, unsigned long count);
-extern void insl (unsigned long port, void *dst, unsigned long count);
-extern void outsb (unsigned long port, const void *src, unsigned long count);
-extern void outsw (unsigned long port, const void *src, unsigned long count);
-extern void outsl (unsigned long port, const void *src, unsigned long count);
-
-#define IO_SPACE_LIMIT ~0
-
-#define memset_io(a,b,c) memset((void *)(a),(b),(c))
-#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
-#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
-
-/* At this point the Xtensa doesn't provide byte swap instructions */
-
-#ifdef __XTENSA_EB__
-# define in_8(addr) (*(u8*)(addr))
-# define in_le16(addr) _swapw(*(u16*)(addr))
-# define in_le32(addr) _swapl(*(u32*)(addr))
-# define out_8(b, addr) *(u8*)(addr) = (b)
-# define out_le16(b, addr) *(u16*)(addr) = _swapw(b)
-# define out_le32(b, addr) *(u32*)(addr) = _swapl(b)
-#elif defined(__XTENSA_EL__)
-# define in_8(addr) (*(u8*)(addr))
-# define in_le16(addr) (*(u16*)(addr))
-# define in_le32(addr) (*(u32*)(addr))
-# define out_8(b, addr) *(u8*)(addr) = (b)
-# define out_le16(b, addr) *(u16*)(addr) = (b)
-# define out_le32(b, addr) *(u32*)(addr) = (b)
-#else
-# error processor byte order undefined!
-#endif
-
-
-/*
- * Convert a physical pointer to a virtual kernel pointer for /dev/mem access
- */
-#define xlate_dev_mem_ptr(p) __va(p)
-
-/*
- * Convert a virtual cached pointer to an uncached pointer
- */
-#define xlate_dev_kmem_ptr(p) p
-
+#define readb_relaxed readb
+#define readw_relaxed readw
+#define readl_relaxed readl
#endif /* __KERNEL__ */
+#include <asm-generic/io.h>
+
#endif /* _XTENSA_IO_H */
diff --git a/arch/xtensa/kernel/Makefile b/arch/xtensa/kernel/Makefile
index 0f9f35fc191a..f36cef5a62ff 100644
--- a/arch/xtensa/kernel/Makefile
+++ b/arch/xtensa/kernel/Makefile
@@ -6,7 +6,7 @@ extra-y := head.o vmlinux.lds
obj-y := align.o entry.o irq.o coprocessor.o process.o ptrace.o \
setup.o signal.o syscall.o time.o traps.o vectors.o platform.o \
- pci-dma.o io.o
+ pci-dma.o
obj-$(CONFIG_KGDB) += xtensa-stub.o
obj-$(CONFIG_PCI) += pci.o
diff --git a/arch/xtensa/kernel/io.c b/arch/xtensa/kernel/io.c
deleted file mode 100644
index 5b65269b1d2f..000000000000
--- a/arch/xtensa/kernel/io.c
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * arch/xtensa/io.c
- *
- * IO primitives
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * Copied from sparc.
- *
- * Chris Zankel <chris@zankel.net>
- *
- */
-
-#include <asm/io.h>
-#include <asm/byteorder.h>
-
-void outsb(unsigned long addr, const void *src, unsigned long count) {
- while (count) {
- count -= 1;
- writeb(*(const char *)src, addr);
- src += 1;
- addr += 1;
- }
-}
-
-void outsw(unsigned long addr, const void *src, unsigned long count) {
- while (count) {
- count -= 2;
- writew(*(const short *)src, addr);
- src += 2;
- addr += 2;
- }
-}
-
-void outsl(unsigned long addr, const void *src, unsigned long count) {
- while (count) {
- count -= 4;
- writel(*(const long *)src, addr);
- src += 4;
- addr += 4;
- }
-}
-
-void insb(unsigned long addr, void *dst, unsigned long count) {
- while (count) {
- count -= 1;
- *(unsigned char *)dst = readb(addr);
- dst += 1;
- addr += 1;
- }
-}
-
-void insw(unsigned long addr, void *dst, unsigned long count) {
- while (count) {
- count -= 2;
- *(unsigned short *)dst = readw(addr);
- dst += 2;
- addr += 2;
- }
-}
-
-void insl(unsigned long addr, void *dst, unsigned long count) {
- while (count) {
- count -= 4;
- /*
- * XXX I am sure we are in for an unaligned trap here.
- */
- *(unsigned long *)dst = readl(addr);
- dst += 4;
- addr += 4;
- }
-}
diff --git a/drivers/usb/musb/musb_io.h b/drivers/usb/musb/musb_io.h
index f7c1c8e2dc3f..565ad1617832 100644
--- a/drivers/usb/musb/musb_io.h
+++ b/drivers/usb/musb/musb_io.h
@@ -40,7 +40,8 @@
#if !defined(CONFIG_ARM) && !defined(CONFIG_SUPERH) \
&& !defined(CONFIG_AVR32) && !defined(CONFIG_PPC32) \
&& !defined(CONFIG_PPC64) && !defined(CONFIG_BLACKFIN) \
- && !defined(CONFIG_MIPS) && !defined(CONFIG_M68K)
+ && !defined(CONFIG_MIPS) && !defined(CONFIG_M68K) \
+ && !defined(CONFIG_XTENSA)
static inline void readsl(const void __iomem *addr, void *buf, int len)
{ insl((unsigned long)addr, buf, len); }
static inline void readsw(const void __iomem *addr, void *buf, int len)
From d046f77ec4a48d8840a9007451b20162eabe6943 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:41 +0400
Subject: [PATCH 10/27] xtensa: set NO_IOPORT to 'n' by default
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/Kconfig | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 2debe94443b2..2df296a64cda 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -37,7 +37,7 @@ config ARCH_HAS_ILOG2_U64
def_bool n
config NO_IOPORT
- def_bool y
+ def_bool n
config HZ
int
@@ -144,6 +144,7 @@ config XTENSA_PLATFORM_XT2000
config XTENSA_PLATFORM_S6105
bool "S6105"
select SERIAL_CONSOLE
+ select NO_IOPORT
endchoice
From 6ed65f3748c249ba420e60a8ed93670f452256cf Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:42 +0400
Subject: [PATCH 11/27] xtensa: add ARCH_WANT_OPTIONAL_GPIOLIB to xtensa config
This is needed for various modules requiring GPIO. This allows building
kernel in allmodconfig configuration.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 2df296a64cda..282be264cd02 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -13,6 +13,7 @@ config XTENSA
select GENERIC_CPU_DEVICES
select MODULES_USE_ELF_RELA
select GENERIC_PCI_IOMAP
+ select ARCH_WANT_OPTIONAL_GPIOLIB
help
Xtensa processors are 32-bit RISC machines designed by Tensilica
primarily for embedded systems. These processors are both
From fa48cf426926289643b8f35479ba2ff369d4750e Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:43 +0400
Subject: [PATCH 12/27] xtensa: change default platform clock frequency to
10MHz
Existing simulators show this level of performance.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/kernel/platform.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/xtensa/kernel/platform.c b/arch/xtensa/kernel/platform.c
index 1b91a97f1d84..97230e46cbe7 100644
--- a/arch/xtensa/kernel/platform.c
+++ b/arch/xtensa/kernel/platform.c
@@ -40,8 +40,8 @@ _F(int, pcibios_fixup, (void), { return 0; });
#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
_F(void, calibrate_ccount, (void),
{
- printk ("ERROR: Cannot calibrate cpu frequency! Assuming 100MHz.\n");
- ccount_per_jiffy = 100 * (1000000UL/HZ);
+ pr_err("ERROR: Cannot calibrate cpu frequency! Assuming 10MHz.\n");
+ ccount_per_jiffy = 10 * (1000000UL/HZ);
});
#endif
From 695c617ceec7954545285f1aa065edcbfe71fcee Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:44 +0400
Subject: [PATCH 13/27] xtensa: ISS: add dummy serial.h for ISS platform
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/platforms/iss/include/platform/serial.h | 0
1 file changed, 0 insertions(+), 0 deletions(-)
create mode 100644 arch/xtensa/platforms/iss/include/platform/serial.h
diff --git a/arch/xtensa/platforms/iss/include/platform/serial.h b/arch/xtensa/platforms/iss/include/platform/serial.h
new file mode 100644
index 000000000000..e69de29bb2d1
From 5295325fbf4d48842ca1540fa7bdc51bc19e2fa6 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:45 +0400
Subject: [PATCH 14/27] xtensa: ISS: add platform_pcibios_init
Provide pcibios initialization function in case PCI is enabled in the
kernel config. This allows building kernel in allmodconfig
configuration.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/platforms/iss/setup.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c
index f60c8cf6dfbe..e7ce16b24441 100644
--- a/arch/xtensa/platforms/iss/setup.c
+++ b/arch/xtensa/platforms/iss/setup.c
@@ -38,6 +38,12 @@ void __init platform_init(bp_tag_t* bootparam)
}
+#ifdef CONFIG_PCI
+void platform_pcibios_init(void)
+{
+}
+#endif
+
void platform_halt(void)
{
printk (" ** Called platform_halt(), looping forever! **\n");
From 8bac83289a061e9b080d500533f29b5822de5b80 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:46 +0400
Subject: [PATCH 15/27] xtensa: ISS: change keyboard polling rate
Polling rate of once per 20 seconds seems to be too low. Increase it to
10 times per second.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/platforms/iss/console.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index daee86cdf0cc..3fc152292499 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -33,7 +33,7 @@
#endif
#define SERIAL_MAX_NUM_LINES 1
-#define SERIAL_TIMER_VALUE (20 * HZ)
+#define SERIAL_TIMER_VALUE (HZ / 10)
static struct tty_driver *serial_driver;
static struct tty_port serial_port;
From 237531714fbe07b27f5b2fbf239df962adfc50d7 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:47 +0400
Subject: [PATCH 16/27] xtensa: ISS: exit simulator in case of halt or poweroff
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/platforms/iss/setup.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c
index e7ce16b24441..927acf378ea3 100644
--- a/arch/xtensa/platforms/iss/setup.c
+++ b/arch/xtensa/platforms/iss/setup.c
@@ -46,14 +46,14 @@ void platform_pcibios_init(void)
void platform_halt(void)
{
- printk (" ** Called platform_halt(), looping forever! **\n");
- while (1);
+ pr_info(" ** Called platform_halt() **\n");
+ __asm__ __volatile__("movi a2, 1\nsimcall\n");
}
void platform_power_off(void)
{
- printk (" ** Called platform_power_off(), looping forever! **\n");
- while (1);
+ pr_info(" ** Called platform_power_off() **\n");
+ __asm__ __volatile__("movi a2, 1\nsimcall\n");
}
void platform_restart(void)
{
From d0fccc0446800a746d109d5c202a4a550036d923 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:48 +0400
Subject: [PATCH 17/27] xtensa: ISS: drop unused io.c
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/platforms/iss/Makefile | 2 +-
arch/xtensa/platforms/iss/io.c | 32 ------------------------------
2 files changed, 1 insertion(+), 33 deletions(-)
delete mode 100644 arch/xtensa/platforms/iss/io.c
diff --git a/arch/xtensa/platforms/iss/Makefile b/arch/xtensa/platforms/iss/Makefile
index c61dd3961b17..b7d1a5c0ff7f 100644
--- a/arch/xtensa/platforms/iss/Makefile
+++ b/arch/xtensa/platforms/iss/Makefile
@@ -4,5 +4,5 @@
# "prom monitor" library routines under Linux.
#
-obj-y = io.o console.o setup.o
+obj-y = console.o setup.o
obj-$(CONFIG_NET) += network.o
diff --git a/arch/xtensa/platforms/iss/io.c b/arch/xtensa/platforms/iss/io.c
deleted file mode 100644
index 571d0b24f895..000000000000
--- a/arch/xtensa/platforms/iss/io.c
+++ /dev/null
@@ -1,32 +0,0 @@
-/* This file isn't really needed right now. */
-
-#if 0
-
-#include <asm/io.h>
-#include <platform/platform-iss/simcall.h>
-
-extern int __simc ();
-
-
-char iss_serial_getc()
-{
- char c;
- __simc( SYS_read, 0, &c, 1 );
- return c;
-}
-
-void iss_serial_putc( char c )
-{
- __simc( SYS_write, 1, &c, 1 );
-}
-
-void iss_serial_puts( char *s )
-{
- if( s != 0 && *s != 0 )
- __simc( SYS_write, 1, s, strlen(s) );
-}
-
-/*#error Need I/O ports to specific hardware!*/
-
-#endif
-
From 7c94fe4a012e6d0858b9a80cbc18b7ee788f572d Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:49 +0400
Subject: [PATCH 18/27] xtensa: fix parallel make
Make vmlinux.tmp and vmlinux.tmp.gz separate build targets, avoid
removing vmlinux.tmp during vmlinux.tmp.gz build.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/boot/boot-elf/Makefile | 9 +++++----
arch/xtensa/boot/boot-redboot/Makefile | 12 +++++++-----
2 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/arch/xtensa/boot/boot-elf/Makefile b/arch/xtensa/boot/boot-elf/Makefile
index 08e8814f8c71..4bbc26f797f1 100644
--- a/arch/xtensa/boot/boot-elf/Makefile
+++ b/arch/xtensa/boot/boot-elf/Makefile
@@ -20,9 +20,11 @@ boot-y := bootstrap.o
OBJS := $(addprefix $(obj)/,$(boot-y))
-Image: vmlinux $(OBJS) arch/$(ARCH)/boot/boot-elf/boot.lds
+vmlinux.tmp: vmlinux
$(OBJCOPY) --strip-all -R .comment -R .note.gnu.build-id -O binary \
- vmlinux vmlinux.tmp
+ $^ $@
+
+Image: vmlinux.tmp $(OBJS) arch/$(ARCH)/boot/boot-elf/boot.lds
$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
--add-section image=vmlinux.tmp \
--set-section-flags image=contents,alloc,load,load,data \
@@ -30,7 +32,6 @@ Image: vmlinux $(OBJS) arch/$(ARCH)/boot/boot-elf/boot.lds
$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \
-T arch/$(ARCH)/boot/boot-elf/boot.lds \
-o arch/$(ARCH)/boot/$@.elf $@.tmp
- rm -f $@.tmp vmlinux.tmp
Image.initrd: vmlinux $(OBJS)
$(OBJCOPY) --strip-all -R .comment -R .note.gnu.build-id -O binary \
@@ -44,7 +45,7 @@ Image.initrd: vmlinux $(OBJS)
$(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \
-T $(srctree)/arch/$(ARCH)/boot/boot-elf/boot.ld \
-o arch/$(ARCH)/boot/$@.elf $@.tmp
- rm -f $@.tmp vmlinux.tmp
+#rm -f $@.tmp vmlinux.tmp
zImage: Image
diff --git a/arch/xtensa/boot/boot-redboot/Makefile b/arch/xtensa/boot/boot-redboot/Makefile
index 872029b84435..25a78c6b1530 100644
--- a/arch/xtensa/boot/boot-redboot/Makefile
+++ b/arch/xtensa/boot/boot-redboot/Makefile
@@ -21,15 +21,17 @@ LIBS := arch/xtensa/boot/lib/lib.a arch/xtensa/lib/lib.a
LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
-zImage: vmlinux $(OBJS) $(LIBS)
+vmlinux.tmp: vmlinux
$(OBJCOPY) --strip-all -R .comment -R .note.gnu.build-id -O binary \
- vmlinux vmlinux.tmp
- gzip -vf9 vmlinux.tmp
+ $^ $@
+
+vmlinux.tmp.gz: vmlinux.tmp
+ $(GZIP) $(GZIP_FLAGS) $^ > $@
+
+zImage: vmlinux.tmp.gz $(OBJS) $(LIBS)
$(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
--add-section image=vmlinux.tmp.gz \
--set-section-flags image=contents,alloc,load,load,data \
$(OBJS) $@.tmp
$(LD) $(LD_ARGS) -o $@.elf $@.tmp $(LIBS) -L/xtensa-elf/lib $(LIBGCC)
$(OBJCOPY) -S -O binary $@.elf arch/$(ARCH)/boot/$@.redboot
- rm -f $@.tmp $@.elf vmlinux.tmp.gz
-
From a753cd9abf389ce8fea79e7f30640926356778d3 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:51 +0400
Subject: [PATCH 19/27] xtensa: fix CODA build
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index f973754ddf90..b201d4486098 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -31,7 +31,7 @@ PLATFORM = $(platform-y)
export PLATFORM
# temporarily until string.h is fixed
-KBUILD_CFLAGS += -ffreestanding
+KBUILD_CFLAGS += -ffreestanding -D__linux__
KBUILD_CFLAGS += -pipe -mlongcalls
From a4c8aa5e5c229be926c40f83509c8a30145802c6 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:52 +0400
Subject: [PATCH 20/27] hisax: disable build for big-endian xtensa
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
drivers/isdn/hisax/Kconfig | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/isdn/hisax/Kconfig b/drivers/isdn/hisax/Kconfig
index 452fde9edf86..70ecd0c19500 100644
--- a/drivers/isdn/hisax/Kconfig
+++ b/drivers/isdn/hisax/Kconfig
@@ -109,7 +109,7 @@ config HISAX_16_3
config HISAX_TELESPCI
bool "Teles PCI"
- depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+ depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN)))
help
This enables HiSax support for the Teles PCI.
See <file:Documentation/isdn/README.HiSax> on how to configure it.
@@ -237,7 +237,7 @@ config HISAX_MIC
config HISAX_NETJET
bool "NETjet card"
- depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+ depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN)))
help
This enables HiSax support for the NetJet from Traverse
Technologies.
@@ -248,7 +248,7 @@ config HISAX_NETJET
config HISAX_NETJET_U
bool "NETspider U card"
- depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+ depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN)))
help
This enables HiSax support for the Netspider U interface ISDN card
from Traverse Technologies.
@@ -316,7 +316,7 @@ config HISAX_GAZEL
config HISAX_HFC_PCI
bool "HFC PCI-Bus cards"
- depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+ depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN)))
help
This enables HiSax support for the HFC-S PCI 2BDS0 based cards.
@@ -341,7 +341,7 @@ config HISAX_HFC_SX
config HISAX_ENTERNOW_PCI
bool "Formula-n enter:now PCI card"
- depends on HISAX_NETJET && PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV))
+ depends on HISAX_NETJET && PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN)))
help
This enables HiSax support for the Formula-n enter:now PCI
ISDN card.
From eb9a63a1e550c489ba389c53bef0f7a94156fa8e Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:54 +0400
Subject: [PATCH 21/27] xtensa: rename MISC SR definition to avoid name clashes
There are other special register that cause build warnings and may as
well need renaming as well.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/include/asm/regs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/xtensa/include/asm/regs.h b/arch/xtensa/include/asm/regs.h
index d4baed246928..a3075b12aff1 100644
--- a/arch/xtensa/include/asm/regs.h
+++ b/arch/xtensa/include/asm/regs.h
@@ -66,7 +66,7 @@
#define ICOUNTLEVEL 237
#define EXCVADDR 238
#define CCOMPARE 240
-#define MISC 244
+#define MISC_SR 244
/* Special names for read-only and write-only interrupt registers. */
From 715ec944f6a04e1ee3b6ae335e5071e0b2a7755c Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:55 +0400
Subject: [PATCH 22/27] parport: disable for xtensa arch
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
drivers/parport/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/parport/Kconfig b/drivers/parport/Kconfig
index d92185a5523b..4b6e4e7aca8f 100644
--- a/drivers/parport/Kconfig
+++ b/drivers/parport/Kconfig
@@ -36,7 +36,7 @@ if PARPORT
config PARPORT_PC
tristate "PC-style hardware"
depends on (!SPARC64 || PCI) && !SPARC32 && !M32R && !FRV && \
- (!M68K || ISA) && !MN10300 && !AVR32 && !BLACKFIN
+ (!M68K || ISA) && !MN10300 && !AVR32 && !BLACKFIN && !XTENSA
---help---
You should say Y here if you have a PC-style parallel port. All
IBM PC compatible computers and some Alphas have PC-style
From d3738f407c8ced4fd17dccf6cce729023c735c73 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:56 +0400
Subject: [PATCH 23/27] xtensa: add missing symbol exports
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/kernel/pci-dma.c | 4 ++++
arch/xtensa/kernel/xtensa_ksyms.c | 8 ++++++++
2 files changed, 12 insertions(+)
diff --git a/arch/xtensa/kernel/pci-dma.c b/arch/xtensa/kernel/pci-dma.c
index 2783fda76ddc..2d9cc6dbfd78 100644
--- a/arch/xtensa/kernel/pci-dma.c
+++ b/arch/xtensa/kernel/pci-dma.c
@@ -21,6 +21,7 @@
#include <linux/string.h>
#include <linux/pci.h>
#include <linux/gfp.h>
+#include <linux/module.h>
#include <asm/io.h>
#include <asm/cacheflush.h>
@@ -62,6 +63,7 @@ dma_alloc_coherent(struct device *dev,size_t size,dma_addr_t *handle,gfp_t flag)
return (void*)uncached;
}
+EXPORT_SYMBOL(dma_alloc_coherent);
void dma_free_coherent(struct device *hwdev, size_t size,
void *vaddr, dma_addr_t dma_handle)
@@ -73,6 +75,7 @@ void dma_free_coherent(struct device *hwdev, size_t size,
free_pages(addr, get_order(size));
}
+EXPORT_SYMBOL(dma_free_coherent);
void consistent_sync(void *vaddr, size_t size, int direction)
@@ -92,3 +95,4 @@ void consistent_sync(void *vaddr, size_t size, int direction)
break;
}
}
+EXPORT_SYMBOL(consistent_sync);
diff --git a/arch/xtensa/kernel/xtensa_ksyms.c b/arch/xtensa/kernel/xtensa_ksyms.c
index c9a7c5b74a0d..88fe2f2f376d 100644
--- a/arch/xtensa/kernel/xtensa_ksyms.c
+++ b/arch/xtensa/kernel/xtensa_ksyms.c
@@ -39,8 +39,12 @@
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memmove);
+EXPORT_SYMBOL(__strncpy_user);
+EXPORT_SYMBOL(clear_page);
+EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(kernel_thread);
+EXPORT_SYMBOL(empty_zero_page);
/*
* gcc internal math functions
@@ -56,6 +60,7 @@ extern unsigned int __udivsi3(unsigned int, unsigned int);
extern unsigned int __umodsi3(unsigned int, unsigned int);
extern unsigned long long __umoddi3(unsigned long long, unsigned long long);
extern unsigned long long __udivdi3(unsigned long long, unsigned long long);
+extern int __ucmpdi2(int, int);
EXPORT_SYMBOL(__ashldi3);
EXPORT_SYMBOL(__ashrdi3);
@@ -68,11 +73,14 @@ EXPORT_SYMBOL(__udivsi3);
EXPORT_SYMBOL(__umodsi3);
EXPORT_SYMBOL(__udivdi3);
EXPORT_SYMBOL(__umoddi3);
+EXPORT_SYMBOL(__ucmpdi2);
+EXPORT_SYMBOL(__xtensa_libgcc_window_spill);
#ifdef CONFIG_NET
/*
* Networking support
*/
+EXPORT_SYMBOL(csum_partial);
EXPORT_SYMBOL(csum_partial_copy_generic);
#endif /* CONFIG_NET */
From 6907b4564b77cd8a468716ea39dc152e48f03538 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:57 +0400
Subject: [PATCH 24/27] xtensa: provide dummy gcc intrinsics
__xtensa_libgcc_window_spill is needed for __builtin_return_address(1),
but its libgcc implementation cannot be used as it makes a syscall.
Atomic intrinsics are used by single staging driver.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/kernel/xtensa_ksyms.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/arch/xtensa/kernel/xtensa_ksyms.c b/arch/xtensa/kernel/xtensa_ksyms.c
index 88fe2f2f376d..a8b9f1fd1e17 100644
--- a/arch/xtensa/kernel/xtensa_ksyms.c
+++ b/arch/xtensa/kernel/xtensa_ksyms.c
@@ -74,8 +74,25 @@ EXPORT_SYMBOL(__umodsi3);
EXPORT_SYMBOL(__udivdi3);
EXPORT_SYMBOL(__umoddi3);
EXPORT_SYMBOL(__ucmpdi2);
+
+void __xtensa_libgcc_window_spill(void)
+{
+ BUG();
+}
EXPORT_SYMBOL(__xtensa_libgcc_window_spill);
+unsigned long __sync_fetch_and_and_4(unsigned long *p, unsigned long v)
+{
+ BUG();
+}
+EXPORT_SYMBOL(__sync_fetch_and_and_4);
+
+unsigned long __sync_fetch_and_or_4(unsigned long *p, unsigned long v)
+{
+ BUG();
+}
+EXPORT_SYMBOL(__sync_fetch_and_or_4);
+
#ifdef CONFIG_NET
/*
* Networking support
From b973b4c91be8f7de0531cf8ca2df41021d8f39b3 Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:53 +0400
Subject: [PATCH 25/27] xtensa: fix TIOCGSERIAL and TIOCSSERIAL definitions
Put equivalent constants into TIOCGSERIAL and TIOCSSERIAL definitions:
size subfield of these IOCTL codes is not used and no other architecture
uses _IO* macros here.
The other way could be putting #include <linux/serial.h> into
net/bluetooth/rfcomm/tty.c.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/include/asm/ioctls.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/xtensa/include/asm/ioctls.h b/arch/xtensa/include/asm/ioctls.h
index fd1d1369a407..2aa4cd9f0cec 100644
--- a/arch/xtensa/include/asm/ioctls.h
+++ b/arch/xtensa/include/asm/ioctls.h
@@ -71,8 +71,8 @@
#define TIOCSSOFTCAR _IOW('T', 26, unsigned int)
#define TIOCLINUX _IOW('T', 28, char)
#define TIOCCONS _IO('T', 29)
-#define TIOCGSERIAL _IOR('T', 30, struct serial_struct)
-#define TIOCSSERIAL _IOW('T', 31, struct serial_struct)
+#define TIOCGSERIAL 0x803C541E /*_IOR('T', 30, struct serial_struct)*/
+#define TIOCSSERIAL 0x403C541F /*_IOW('T', 31, struct serial_struct)*/
#define TIOCPKT _IOW('T', 32, int)
# define TIOCPKT_DATA 0
# define TIOCPKT_FLUSHREAD 1
From 9ad79b58510b2845e5ffa77654596d7184a827ab Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Mon, 17 Sep 2012 05:44:50 +0400
Subject: [PATCH 26/27] xtensa: drop CONFIG_EMBEDDED_RAMDISK
Remove Kconfig entries, boot subdirectory, dependencies from other
boot-* Makefiles, and sections from ld scripts.
Remove stale redboot code that used to pass initrd addresses in a3 and
a4 to _start.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/Kconfig | 17 -----------------
arch/xtensa/Makefile | 8 +-------
arch/xtensa/boot/Makefile | 2 +-
arch/xtensa/boot/boot-elf/Makefile | 17 -----------------
arch/xtensa/boot/boot-elf/boot.lds.S | 7 -------
arch/xtensa/boot/boot-redboot/boot.ld | 7 -------
arch/xtensa/boot/boot-redboot/bootstrap.S | 10 ----------
arch/xtensa/boot/ramdisk/Makefile | 23 -----------------------
arch/xtensa/configs/s6105_defconfig | 5 -----
arch/xtensa/kernel/setup.c | 12 ------------
arch/xtensa/kernel/vmlinux.lds.S | 5 -----
11 files changed, 2 insertions(+), 111 deletions(-)
delete mode 100644 arch/xtensa/boot/ramdisk/Makefile
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 282be264cd02..cebbcfbe9d6d 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -227,23 +227,6 @@ source "drivers/Kconfig"
source "fs/Kconfig"
-menu "Xtensa initrd options"
- depends on BLK_DEV_INITRD
-
-config EMBEDDED_RAMDISK
- bool "Embed root filesystem ramdisk into the kernel"
-
-config EMBEDDED_RAMDISK_IMAGE
- string "Filename of gzipped ramdisk image"
- depends on EMBEDDED_RAMDISK
- default "ramdisk.gz"
- help
- This is the filename of the ramdisk image to be built into the
- kernel. Relative pathnames are relative to arch/xtensa/boot/ramdisk/.
- The ramdisk image is not part of the kernel distribution; you must
- provide one yourself.
-endmenu
-
source "arch/xtensa/Kconfig.debug"
source "security/Kconfig"
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index b201d4486098..735916b3daee 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -48,12 +48,6 @@ endif
KBUILD_DEFCONFIG := iss_defconfig
-# ramdisk/initrd support
-# You need a compressed ramdisk image, named ramdisk.gz in
-# arch/xtensa/boot/ramdisk
-
-core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
-
# Test for cross compiling
ifneq ($(VARIANT),)
@@ -87,7 +81,7 @@ all: zImage
bzImage : zImage
-zImage zImage.initrd: vmlinux
+zImage: vmlinux
$(Q)$(MAKE) $(build)=$(boot) $@
define archhelp
diff --git a/arch/xtensa/boot/Makefile b/arch/xtensa/boot/Makefile
index 70fd1453e172..4018f8994196 100644
--- a/arch/xtensa/boot/Makefile
+++ b/arch/xtensa/boot/Makefile
@@ -25,7 +25,7 @@ bootdir-$(CONFIG_XTENSA_PLATFORM_ISS) += boot-elf
bootdir-$(CONFIG_XTENSA_PLATFORM_XT2000) += boot-redboot boot-elf
-zImage zImage.initrd Image Image.initrd: $(bootdir-y)
+zImage Image: $(bootdir-y)
$(bootdir-y): $(addprefix $(obj)/,$(subdir-y)) \
$(addprefix $(obj)/,$(host-progs))
diff --git a/arch/xtensa/boot/boot-elf/Makefile b/arch/xtensa/boot/boot-elf/Makefile
index 4bbc26f797f1..f10992b89027 100644
--- a/arch/xtensa/boot/boot-elf/Makefile
+++ b/arch/xtensa/boot/boot-elf/Makefile
@@ -33,22 +33,5 @@ Image: vmlinux.tmp $(OBJS) arch/$(ARCH)/boot/boot-elf/boot.lds
-T arch/$(ARCH)/boot/boot-elf/boot.lds \
-o arch/$(ARCH)/boot/$@.elf $@.tmp
-Image.initrd: vmlinux $(OBJS)
- $(OBJCOPY) --strip-all -R .comment -R .note.gnu.build-id -O binary \
- --add-section .initrd=arch/$(ARCH)/boot/ramdisk \
- --set-section-flags .initrd=contents,alloc,load,load,data \
- vmlinux vmlinux.tmp
- $(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \
- --add-section image=vmlinux.tmp \
- --set-section-flags image=contents,alloc,load,load,data \
- $(OBJS) $@.tmp
- $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \
- -T $(srctree)/arch/$(ARCH)/boot/boot-elf/boot.ld \
- -o arch/$(ARCH)/boot/$@.elf $@.tmp
-#rm -f $@.tmp vmlinux.tmp
-
-
zImage: Image
-zImage.initrd: Image.initrd
-
diff --git a/arch/xtensa/boot/boot-elf/boot.lds.S b/arch/xtensa/boot/boot-elf/boot.lds.S
index 4e53b74dc44b..7b646e0a6486 100644
--- a/arch/xtensa/boot/boot-elf/boot.lds.S
+++ b/arch/xtensa/boot/boot-elf/boot.lds.S
@@ -33,13 +33,6 @@ SECTIONS
__reloc_end = . ;
- .initrd ALIGN(0x10) :
- {
- boot_initrd_start = . ;
- *(.initrd)
- boot_initrd_end = .;
- }
-
. = ALIGN(0x10);
__image_load = . ;
.image 0xd0001000:
diff --git a/arch/xtensa/boot/boot-redboot/boot.ld b/arch/xtensa/boot/boot-redboot/boot.ld
index 774db20d11f7..5bbcaf9e830d 100644
--- a/arch/xtensa/boot/boot-redboot/boot.ld
+++ b/arch/xtensa/boot/boot-redboot/boot.ld
@@ -31,13 +31,6 @@ SECTIONS
__reloc_end = . ;
- .initrd ALIGN(0x10) :
- {
- boot_initrd_start = . ;
- *(.initrd)
- boot_initrd_end = .;
- }
-
. = ALIGN(0x10);
__image_load = . ;
.image 0xd0001000: AT(__image_load)
diff --git a/arch/xtensa/boot/boot-redboot/bootstrap.S b/arch/xtensa/boot/boot-redboot/bootstrap.S
index 5582e8cfac8f..4c316cd28a54 100644
--- a/arch/xtensa/boot/boot-redboot/bootstrap.S
+++ b/arch/xtensa/boot/boot-redboot/bootstrap.S
@@ -226,17 +226,7 @@ _reloc:
isync
- movi a5, __start
- movi a3, boot_initrd_start
- movi a4, boot_initrd_end
- sub a3, a3, a5
- sub a4, a4, a5
- add a3, a0, a3
- add a4, a0, a4
-
# a2 Boot parameter list
- # a3 initrd_start (virtual load address)
- # a4 initrd_end (virtual load address)
movi a0, _image_start
jx a0
diff --git a/arch/xtensa/boot/ramdisk/Makefile b/arch/xtensa/boot/ramdisk/Makefile
deleted file mode 100644
index b12f76352438..000000000000
--- a/arch/xtensa/boot/ramdisk/Makefile
+++ /dev/null
@@ -1,23 +0,0 @@
-#
-# Makefile for a ramdisk image
-#
-
-BIG_ENDIAN := $(shell echo -e "\#ifdef __XTENSA_EL__\nint little;\n\#else\nint big;\n\#endif" | $(CC) -E -|grep -c big)
-
-ifeq ($(BIG_ENDIAN),1)
-OBJCOPY_ARGS := -O elf32-xtensa-be
-else
-OBJCOPY_ARGS := -O elf32-xtensa-le
-endif
-
-obj-y = ramdisk.o
-
-RAMDISK_IMAGE = arch/$(ARCH)/boot/ramdisk/$(CONFIG_EMBEDDED_RAMDISK_IMAGE)
-
-arch/$(ARCH)/boot/ramdisk/ramdisk.o:
- $(Q)echo -e "dummy:" | $(AS) -o $@;
- $(Q)$(OBJCOPY) $(OBJCOPY_ARGS) \
- --add-section .initrd=$(RAMDISK_IMAGE) \
- --set-section-flags .initrd=contents,alloc,load,load,data \
- arch/$(ARCH)/boot/ramdisk/ramdisk.o $@
-
diff --git a/arch/xtensa/configs/s6105_defconfig b/arch/xtensa/configs/s6105_defconfig
index 550e8ed5b5c6..eaf1b8fc6556 100644
--- a/arch/xtensa/configs/s6105_defconfig
+++ b/arch/xtensa/configs/s6105_defconfig
@@ -540,11 +540,6 @@ CONFIG_MSDOS_PARTITION=y
# CONFIG_NLS is not set
# CONFIG_DLM is not set
-#
-# Xtensa initrd options
-#
-# CONFIG_EMBEDDED_RAMDISK is not set
-
#
# Kernel hacking
#
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 17e746f7be60..270360d9806c 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -60,8 +60,6 @@ struct rtc_ops *rtc_ops;
#ifdef CONFIG_BLK_DEV_INITRD
extern void *initrd_start;
extern void *initrd_end;
-extern void *__initrd_start;
-extern void *__initrd_end;
int initrd_is_mapped = 0;
extern int initrd_below_start_ok;
#endif
@@ -79,10 +77,6 @@ static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
sysmem_info_t __initdata sysmem;
-#ifdef CONFIG_BLK_DEV_INITRD
-int initrd_is_mapped;
-#endif
-
#ifdef CONFIG_MMU
extern void init_mmu(void);
#else
@@ -197,12 +191,6 @@ static int __init parse_bootparam(const bp_tag_t* tag)
void __init init_arch(bp_tag_t *bp_start)
{
-
-#ifdef CONFIG_BLK_DEV_INITRD
- initrd_start = &__initrd_start;
- initrd_end = &__initrd_end;
-#endif
-
sysmem.nr_banks = 0;
#ifdef CONFIG_CMDLINE_BOOL
diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index ee2e2089483d..255154f820b7 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -222,11 +222,6 @@ SECTIONS
. = ALIGN(0x10);
.bootstrap : { *(.bootstrap.literal .bootstrap.text .bootstrap.data) }
- . = ALIGN(0x1000);
- __initrd_start = .;
- .initrd : { *(.initrd) }
- __initrd_end = .;
-
.ResetVector.text XCHAL_RESET_VECTOR_VADDR :
{
*(.ResetVector.text)
From 70cefe765433529fc894fd1995a1d5883cb33e05 Mon Sep 17 00:00:00 2001
From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Sat, 12 May 2012 22:39:08 +0200
Subject: [PATCH 27/27] xtensa: Setup CROSS_COMPILE at the top
CROSS_COMPILE must be setup before using e.g. cc-option (and a few other
as-*, cc-*, ld-* macros), else they will check against the wrong compiler
when cross-compiling, and may invoke the cross compiler with wrong or
suboptimal compiler options.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Chris Zankel <chris@zankel.net>
---
arch/xtensa/Makefile | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index 735916b3daee..bb5ba61723f7 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -21,6 +21,18 @@ variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM) := custom
VARIANT = $(variant-y)
export VARIANT
+# Test for cross compiling
+
+ifneq ($(VARIANT),)
+ COMPILE_ARCH = $(shell uname -m)
+
+ ifneq ($(COMPILE_ARCH), xtensa)
+ ifndef CROSS_COMPILE
+ CROSS_COMPILE = xtensa_$(VARIANT)-
+ endif
+ endif
+endif
+
# Platform configuration
platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000
@@ -48,18 +60,6 @@ endif
KBUILD_DEFCONFIG := iss_defconfig
-# Test for cross compiling
-
-ifneq ($(VARIANT),)
- COMPILE_ARCH = $(shell uname -m)
-
- ifneq ($(COMPILE_ARCH), xtensa)
- ifndef CROSS_COMPILE
- CROSS_COMPILE = xtensa_$(VARIANT)-
- endif
- endif
-endif
-
# Only build variant and/or platform if it includes a Makefile
buildvar := $(shell test -e $(srctree)/arch/xtensa/variants/$(VARIANT)/Makefile && echo arch/xtensa/variants/$(VARIANT)/)