diff options
Diffstat (limited to 'arch/xtensa')
29 files changed, 157 insertions, 469 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 744f5ee..cdcb48a 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -11,6 +11,9 @@ config XTENSA select HAVE_GENERIC_HARDIRQS select GENERIC_IRQ_SHOW 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 @@ -35,7 +38,7 @@ config ARCH_HAS_ILOG2_U64 def_bool n config NO_IOPORT - def_bool y + def_bool n config HZ int @@ -142,6 +145,7 @@ config XTENSA_PLATFORM_XT2000 config XTENSA_PLATFORM_S6105 bool "S6105" select SERIAL_CONSOLE + select NO_IOPORT endchoice @@ -205,23 +209,6 @@ 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 f973754..bb5ba61 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 @@ -31,7 +43,7 @@ PLATFORM = $(platform-y) export PLATFORM # temporarily until string.h is fixed -KBUILD_CFLAGS += -ffreestanding +KBUILD_CFLAGS += -ffreestanding -D__linux__ KBUILD_CFLAGS += -pipe -mlongcalls @@ -48,24 +60,6 @@ endif KBUILD_DEFCONFIG := iss_defconfig -# ramdisk/initrd support -# You need a compressed ramdisk image, named ramdisk.gz in -# arch/xtensa/boot/ramdisk - -core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/ - -# Test for cross compiling - -ifneq ($(VARIANT),) - 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)/) @@ -87,7 +81,7 @@ all: zImage bzImage : zImage -zImage zImage.initrd: vmlinux +zImage: vmlinux $(Q)$(MAKE) $(build)=$(boot) $@ define archhelp diff --git a/arch/xtensa/boot/Makefile b/arch/xtensa/boot/Makefile index 70fd145..4018f89 100644 --- a/arch/xtensa/boot/Makefile +++ b/arch/xtensa/boot/Makefile @@ -25,7 +25,7 @@ bootdir-$(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 08e8814..f10992b 100644 --- a/arch/xtensa/boot/boot-elf/Makefile +++ b/arch/xtensa/boot/boot-elf/Makefile @@ -20,34 +20,18 @@ 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 - $(OBJCOPY) $(OBJCOPY_ARGS) -R .comment \ - --add-section image=vmlinux.tmp \ - --set-section-flags image=contents,alloc,load,load,data \ - $(OBJS) $@.tmp - $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \ - -T arch/$(ARCH)/boot/boot-elf/boot.lds \ - -o arch/$(ARCH)/boot/$@.elf $@.tmp - rm -f $@.tmp vmlinux.tmp + $^ $@ -Image.initrd: vmlinux $(OBJS) - $(OBJCOPY) --strip-all -R .comment -R .note.gnu.build-id -O binary \ - --add-section .initrd=arch/$(ARCH)/boot/ramdisk \ - --set-section-flags .initrd=contents,alloc,load,load,data \ - 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 \ $(OBJS) $@.tmp $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) \ - -T $(srctree)/arch/$(ARCH)/boot/boot-elf/boot.ld \ + -T arch/$(ARCH)/boot/boot-elf/boot.lds \ -o arch/$(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 4e53b74..7b646e0 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/Makefile b/arch/xtensa/boot/boot-redboot/Makefile index 872029b..25a78c6 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 - diff --git a/arch/xtensa/boot/boot-redboot/boot.ld b/arch/xtensa/boot/boot-redboot/boot.ld index 774db20..5bbcaf9 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 5582e8c..4c316cd 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 b12f763..0000000 --- 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 550e8ed..eaf1b8f 100644 --- a/arch/xtensa/configs/s6105_defconfig +++ b/arch/xtensa/configs/s6105_defconfig @@ -541,11 +541,6 @@ CONFIG_MSDOS_PARTITION=y # CONFIG_DLM is not set # -# Xtensa initrd options -# -# CONFIG_EMBEDDED_RAMDISK is not set - -# # Kernel hacking # CONFIG_PRINTK_TIME=y diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h index 4beb43c..e6be5b9 100644 --- a/arch/xtensa/include/asm/io.h +++ b/arch/xtensa/include/asm/io.h @@ -25,184 +25,54 @@ #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 *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(); -#else - return (void *)offset; -#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(); -#else - return (void *)offset; -#endif -} - -static inline void iounmap(void *addr) -{ } -/* - * 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)) +#define ioremap_wc ioremap_nocache -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) +static inline void __iomem *ioremap(unsigned long offset, unsigned long size) { - return *(__force volatile __u32 *)(addr); + return ioremap_nocache(offset, size); } -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) + +static inline void iounmap(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) +#endif /* CONFIG_MMU */ /* - * Convert a virtual cached pointer to an uncached pointer + * Generic I/O */ -#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/include/asm/ioctls.h b/arch/xtensa/include/asm/ioctls.h index fd1d136..2aa4cd9 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 diff --git a/arch/xtensa/include/asm/regs.h b/arch/xtensa/include/asm/regs.h index d4baed2..a3075b1 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. */ diff --git a/arch/xtensa/kernel/Makefile b/arch/xtensa/kernel/Makefile index 59fc3fe..f36cef5 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-$(CONFIG_PCI) += pci.o @@ -24,6 +24,7 @@ obj-$(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 $@ diff --git a/arch/xtensa/kernel/io.c b/arch/xtensa/kernel/io.c deleted file mode 100644 index 5b65269..0000000 --- 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/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c index 4340ee0..98e77c3 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); } diff --git a/arch/xtensa/kernel/pci-dma.c b/arch/xtensa/kernel/pci-dma.c index 2783fda..2d9cc6d 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/pci.c b/arch/xtensa/kernel/pci.c index 54354de..126c188 100644 --- a/arch/xtensa/kernel/pci.c +++ b/arch/xtensa/kernel/pci.c @@ -333,7 +333,7 @@ __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; diff --git a/arch/xtensa/kernel/platform.c b/arch/xtensa/kernel/platform.c index 1b91a97..97230e4 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 diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c index 17e746f..270360d 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 ee2e208..255154f 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) diff --git a/arch/xtensa/kernel/xtensa_ksyms.c b/arch/xtensa/kernel/xtensa_ksyms.c index c9a7c5b..a8b9f1f 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 +73,31 @@ EXPORT_SYMBOL(__udivsi3); 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 */ +EXPORT_SYMBOL(csum_partial); EXPORT_SYMBOL(csum_partial_copy_generic); #endif /* CONFIG_NET */ diff --git a/arch/xtensa/platforms/iss/Makefile b/arch/xtensa/platforms/iss/Makefile index af96e31..b7d1a5c 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 = console.o setup.o +obj-$(CONFIG_NET) += network.o diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c index 2cd3d3a..8ab47ed 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; @@ -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/serial.h b/arch/xtensa/platforms/iss/include/platform/serial.h new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/arch/xtensa/platforms/iss/include/platform/serial.h diff --git a/arch/xtensa/platforms/iss/include/platform/simcall.h b/arch/xtensa/platforms/iss/include/platform/simcall.h index b7952c0..8c43bfea 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/io.c b/arch/xtensa/platforms/iss/io.c deleted file mode 100644 index 571d0b2..0000000 --- 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 - diff --git a/arch/xtensa/platforms/iss/network.c b/arch/xtensa/platforms/iss/network.c index 7dde244..7d0fea6 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 ================================ */ diff --git a/arch/xtensa/platforms/iss/setup.c b/arch/xtensa/platforms/iss/setup.c index f60c8cf..927acf3 100644 --- a/arch/xtensa/platforms/iss/setup.c +++ b/arch/xtensa/platforms/iss/setup.c @@ -38,16 +38,22 @@ 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"); - 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) { |
