Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze

* 'next' of git://git.monstr.eu/linux-2.6-microblaze: (42 commits) microblaze: Fix build with make 3.82 fbdev/xilinxfb: Microblaze driver support microblaze: Support C optimized lib functions for little-endian microblaze: Separate library optimized functions microblaze: Support timer on AXI lite microblaze: Add support for little-endian Microblaze microblaze: KGDB little endian support microblaze: Add PVR for endians plus detection net: emaclite: Add support for little-endian platforms microblaze: trivial: Add comment for AXI pvr microblaze: pci-common cleanup microblaze: Support early console on uart16550 microblaze: Do not compile early console support for uartlite if is disabled microblaze: Setup early console dynamically microblaze: Rename all uartlite early printk functions microblaze: remove early printk uarlite console dependency from header microblaze: Remove additional compatible properties microblaze: Remove hardcoded asm instraction for PVR loading microblaze: Use static const char * const where possible microblaze: Define VMALLOC_START/END ...
git-mirror · Oct 25, 2010 · e0e170b · e0e170b
2 parents b20f9e5 + b843e4e
commit e0e170b
Show file tree

Hide file tree

Showing 56 changed files with 1,038 additions and 201 deletions.
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
@@ -121,6 +121,23 @@ config CMDLINE_FORCE
 	  Set this to have arguments from the default kernel command string
 	  override those passed by the boot loader.
 
+config SECCOMP
+	bool "Enable seccomp to safely compute untrusted bytecode"
+	depends on PROC_FS
+	default y
+	help
+	  This kernel feature is useful for number crunching applications
+	  that may need to compute untrusted bytecode during their
+	  execution. By using pipes or other transports made available to
+	  the process as file descriptors supporting the read/write
+	  syscalls, it's possible to isolate those applications in
+	  their own address space using seccomp. Once seccomp is
+	  enabled via /proc/<pid>/seccomp, it cannot be disabled
+	  and the task is only allowed to execute a few safe syscalls
+	  defined by each seccomp mode.
+
+	  If unsure, say Y. Only embedded should say N here.
+
 endmenu
 
 menu "Advanced setup"

diff --git a/arch/microblaze/Kconfig.debug b/arch/microblaze/Kconfig.debug
@@ -10,7 +10,7 @@ source "lib/Kconfig.debug"
 
 config EARLY_PRINTK
 	bool "Early printk function for kernel"
-	depends on SERIAL_UARTLITE_CONSOLE
+	depends on SERIAL_UARTLITE_CONSOLE || SERIAL_8250_CONSOLE
 	default n
 	help
 	  This option turns on/off early printk messages to console.

diff --git a/arch/microblaze/Makefile b/arch/microblaze/Makefile
@@ -42,11 +42,8 @@ KBUILD_CFLAGS += -ffixed-r31 $(CPUFLAGS-1) $(CPUFLAGS-2)
 LDFLAGS		:=
 LDFLAGS_vmlinux	:=
 
-LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
-
 head-y := arch/microblaze/kernel/head.o
 libs-y += arch/microblaze/lib/
-libs-y += $(LIBGCC)
 core-y += arch/microblaze/kernel/
 core-y += arch/microblaze/mm/
 core-y += arch/microblaze/platform/
@@ -72,12 +69,16 @@ export MMU DTB
 
 all: linux.bin
 
-BOOT_TARGETS = linux.bin linux.bin.gz simpleImage.%
+# With make 3.82 we cannot mix normal and wildcard targets
+BOOT_TARGETS1 = linux.bin linux.bin.gz
+BOOT_TARGETS2 = simpleImage.%
 
 archclean:
 	$(Q)$(MAKE) $(clean)=$(boot)
 
-$(BOOT_TARGETS): vmlinux
+$(BOOT_TARGETS1): vmlinux
+	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
+$(BOOT_TARGETS2): vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 
 define archhelp

diff --git a/arch/microblaze/include/asm/byteorder.h b/arch/microblaze/include/asm/byteorder.h
@@ -1,6 +1,10 @@
 #ifndef _ASM_MICROBLAZE_BYTEORDER_H
 #define _ASM_MICROBLAZE_BYTEORDER_H
 
+#ifdef __MICROBLAZEEL__
+#include <linux/byteorder/little_endian.h>
+#else
 #include <linux/byteorder/big_endian.h>
+#endif
 
 #endif /* _ASM_MICROBLAZE_BYTEORDER_H */
diff --git a/arch/microblaze/include/asm/checksum.h b/arch/microblaze/include/asm/checksum.h
@@ -24,8 +24,13 @@ csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
 		"addc %0, %0, %3\n\t"
 		"addc %0, %0, r0\n\t"
 		: "+&d" (sum)
-		: "d" (saddr), "d" (daddr), "d" (len + proto));
-
+		: "d" (saddr), "d" (daddr),
+#ifdef __MICROBLAZEEL__
+	"d" ((len + proto) << 8)
+#else
+	"d" (len + proto)
+#endif
+);
 	return sum;
 }
 

diff --git a/arch/microblaze/include/asm/cpuinfo.h b/arch/microblaze/include/asm/cpuinfo.h
@@ -38,6 +38,7 @@ struct cpuinfo {
 	u32 use_exc;
 	u32 ver_code;
 	u32 mmu;
+	u32 endian;
 
 	/* CPU caches */
 	u32 use_icache;
@@ -76,7 +77,6 @@ struct cpuinfo {
 	u32 num_rd_brk;
 	u32 num_wr_brk;
 	u32 cpu_clock_freq; /* store real freq of cpu */
-	u32 freq_div_hz; /* store freq/HZ */
 
 	/* FPGA family */
 	u32 fpga_family_code;
@@ -97,7 +97,8 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu);
 static inline unsigned int fcpu(struct device_node *cpu, char *n)
 {
 	int *val;
-	return (val = (int *) of_get_property(cpu, n, NULL)) ? *val : 0;
+	return (val = (int *) of_get_property(cpu, n, NULL)) ?
+							be32_to_cpup(val) : 0;
 }
 
 #endif /* _ASM_MICROBLAZE_CPUINFO_H */
diff --git a/arch/microblaze/include/asm/elf.h b/arch/microblaze/include/asm/elf.h
@@ -71,7 +71,7 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
 
 #define ELF_ET_DYN_BASE         (0x08000000)
 
-#ifdef __LITTLE_ENDIAN__
+#ifdef __MICROBLAZEEL__
 #define ELF_DATA	ELFDATA2LSB
 #else
 #define ELF_DATA	ELFDATA2MSB

diff --git a/arch/microblaze/include/asm/gpio.h b/arch/microblaze/include/asm/gpio.h
@@ -38,12 +38,9 @@ static inline int gpio_cansleep(unsigned int gpio)
 	return __gpio_cansleep(gpio);
 }
 
-/*
- * Not implemented, yet.
- */
 static inline int gpio_to_irq(unsigned int gpio)
 {
-	return -ENOSYS;
+	return __gpio_to_irq(gpio);
 }
 
 static inline int irq_to_gpio(unsigned int irq)

diff --git a/arch/microblaze/include/asm/io.h b/arch/microblaze/include/asm/io.h
@@ -243,6 +243,8 @@ static inline void __iomem *__ioremap(phys_addr_t address, unsigned long size,
 #define out_8(a, v) __raw_writeb((v), (a))
 #define in_8(a) __raw_readb(a)
 
+#define mmiowb()
+
 #define ioport_map(port, nr)	((void __iomem *)(port))
 #define ioport_unmap(addr)
 

diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
@@ -205,9 +205,6 @@ extern int page_is_ram(unsigned long pfn);
 #define TOPHYS(addr)  __virt_to_phys(addr)
 
 #ifdef CONFIG_MMU
-#ifdef CONFIG_CONTIGUOUS_PAGE_ALLOC
-#define WANT_PAGE_VIRTUAL 1 /* page alloc 2 relies on this */
-#endif
 
 #define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)

diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
@@ -165,5 +165,7 @@ extern void __init xilinx_pci_init(void);
 static inline void __init xilinx_pci_init(void) { return; }
 #endif
 
+#include <asm-generic/pci-dma-compat.h>
+
 #endif	/* __KERNEL__ */
 #endif /* __ASM_MICROBLAZE_PCI_H */
diff --git a/arch/microblaze/include/asm/pgalloc.h b/arch/microblaze/include/asm/pgalloc.h
@@ -165,7 +165,8 @@ extern inline void pte_free(struct mm_struct *mm, struct page *ptepage)
 
 #define __pte_free_tlb(tlb, pte, addr)	pte_free((tlb)->mm, (pte))
 
-#define pmd_populate(mm, pmd, pte)	(pmd_val(*(pmd)) = page_address(pte))
+#define pmd_populate(mm, pmd, pte) \
+			(pmd_val(*(pmd)) = (unsigned long)page_address(pte))
 
 #define pmd_populate_kernel(mm, pmd, pte) \
 		(pmd_val(*(pmd)) = (unsigned long) (pte))

diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
@@ -57,6 +57,13 @@ static inline int pte_file(pte_t pte) { return 0; }
 
 #define pgprot_noncached_wc(prot)	prot
 
+/*
+ * All 32bit addresses are effectively valid for vmalloc...
+ * Sort of meaningless for non-VM targets.
+ */
+#define	VMALLOC_START	0
+#define	VMALLOC_END	0xffffffff
+
 #else /* CONFIG_MMU */
 
 #include <asm-generic/4level-fixup.h>

diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h
@@ -27,6 +27,7 @@
 
 /* Other Prototypes */
 extern int early_uartlite_console(void);
+extern int early_uart16550_console(void);
 
 #ifdef CONFIG_PCI
 /*

diff --git a/arch/microblaze/include/asm/pvr.h b/arch/microblaze/include/asm/pvr.h
@@ -30,17 +30,19 @@ struct pvr_s {
 #define PVR0_USE_EXC_MASK		0x04000000
 #define PVR0_USE_ICACHE_MASK		0x02000000
 #define PVR0_USE_DCACHE_MASK		0x01000000
-#define PVR0_USE_MMU			0x00800000	/* new */
+#define PVR0_USE_MMU			0x00800000
+#define PVR0_USE_BTC			0x00400000
+#define PVR0_ENDI			0x00200000
 #define PVR0_VERSION_MASK		0x0000FF00
 #define PVR0_USER1_MASK			0x000000FF
 
 /* User 2 PVR mask */
 #define PVR1_USER2_MASK			0xFFFFFFFF
 
 /* Configuration PVR masks */
-#define PVR2_D_OPB_MASK			0x80000000
+#define PVR2_D_OPB_MASK			0x80000000 /* or AXI */
 #define PVR2_D_LMB_MASK			0x40000000
-#define PVR2_I_OPB_MASK			0x20000000
+#define PVR2_I_OPB_MASK			0x20000000 /* or AXI */
 #define PVR2_I_LMB_MASK			0x10000000
 #define PVR2_INTERRUPT_IS_EDGE_MASK	0x08000000
 #define PVR2_EDGE_IS_POSITIVE_MASK	0x04000000
@@ -63,8 +65,8 @@ struct pvr_s {
 #define PVR2_OPCODE_0x0_ILL_MASK	0x00000040
 #define PVR2_UNALIGNED_EXC_MASK		0x00000020
 #define PVR2_ILL_OPCODE_EXC_MASK	0x00000010
-#define PVR2_IOPB_BUS_EXC_MASK		0x00000008
-#define PVR2_DOPB_BUS_EXC_MASK		0x00000004
+#define PVR2_IOPB_BUS_EXC_MASK		0x00000008 /* or AXI */
+#define PVR2_DOPB_BUS_EXC_MASK		0x00000004 /* or AXI */
 #define PVR2_DIV_ZERO_EXC_MASK		0x00000002
 #define PVR2_FPU_EXC_MASK		0x00000001
 
@@ -208,6 +210,8 @@ struct pvr_s {
 #define PVR_MMU_TLB_ACCESS(pvr)	(pvr.pvr[11] & PVR11_MMU_TLB_ACCESS)
 #define PVR_MMU_ZONES(pvr)	(pvr.pvr[11] & PVR11_MMU_ZONES)
 
+/* endian */
+#define PVR_ENDIAN(pvr)	(pvr.pvr[0] & PVR0_ENDI)
 
 int cpu_has_pvr(void);
 void get_pvr(struct pvr_s *pvr);

diff --git a/arch/microblaze/include/asm/seccomp.h b/arch/microblaze/include/asm/seccomp.h
@@ -0,0 +1,16 @@
+#ifndef _ASM_MICROBLAZE_SECCOMP_H
+#define _ASM_MICROBLAZE_SECCOMP_H
+
+#include <linux/unistd.h>
+
+#define __NR_seccomp_read		__NR_read
+#define __NR_seccomp_write		__NR_write
+#define __NR_seccomp_exit		__NR_exit
+#define __NR_seccomp_sigreturn		__NR_sigreturn
+
+#define __NR_seccomp_read_32		__NR_read
+#define __NR_seccomp_write_32		__NR_write
+#define __NR_seccomp_exit_32		__NR_exit
+#define __NR_seccomp_sigreturn_32	__NR_sigreturn
+
+#endif	/* _ASM_MICROBLAZE_SECCOMP_H */
diff --git a/arch/microblaze/include/asm/setup.h b/arch/microblaze/include/asm/setup.h
@@ -25,6 +25,12 @@ void early_printk(const char *fmt, ...);
 int setup_early_printk(char *opt);
 void disable_early_printk(void);
 
+#if defined(CONFIG_EARLY_PRINTK)
+#define eprintk early_printk
+#else
+#define eprintk printk
+#endif
+
 void heartbeat(void);
 void setup_heartbeat(void);
 

diff --git a/arch/microblaze/include/asm/thread_info.h b/arch/microblaze/include/asm/thread_info.h
@@ -127,23 +127,19 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_SECCOMP		10      /* secure computing */
 #define TIF_FREEZE		14	/* Freezing for suspend */
 
-/* FIXME change in entry.S */
-#define TIF_KERNEL_TRACE	8	/* kernel trace active */
-
 /* true if poll_idle() is polling TIF_NEED_RESCHED */
 #define TIF_POLLING_NRFLAG	16
 
-#define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
-#define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
-#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
-#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
-#define _TIF_SINGLESTEP		(1<<TIF_SINGLESTEP)
-#define _TIF_IRET		(1<<TIF_IRET)
-#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
-#define _TIF_FREEZE		(1<<TIF_FREEZE)
+#define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
+#define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
+#define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)
+#define _TIF_SINGLESTEP		(1 << TIF_SINGLESTEP)
+#define _TIF_IRET		(1 << TIF_IRET)
+#define _TIF_POLLING_NRFLAG	(1 << TIF_POLLING_NRFLAG)
+#define _TIF_FREEZE		(1 << TIF_FREEZE)
 #define _TIF_SYSCALL_AUDIT	(1 << TIF_SYSCALL_AUDIT)
 #define _TIF_SECCOMP		(1 << TIF_SECCOMP)
-#define _TIF_KERNEL_TRACE	(1 << TIF_KERNEL_TRACE)
 
 /* work to do in syscall trace */
 #define _TIF_WORK_SYSCALL_MASK  (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \

diff --git a/arch/microblaze/include/asm/unaligned.h b/arch/microblaze/include/asm/unaligned.h
@@ -12,12 +12,18 @@
 
 # ifdef __KERNEL__
 
-# include <linux/unaligned/be_struct.h>
+# include <linux/unaligned/be_byteshift.h>
 # include <linux/unaligned/le_byteshift.h>
 # include <linux/unaligned/generic.h>
 
-# define get_unaligned	__get_unaligned_be
-# define put_unaligned	__put_unaligned_be
+
+#  ifdef __MICROBLAZEEL__
+#   define get_unaligned	__get_unaligned_le
+#   define put_unaligned	__put_unaligned_le
+#  else
+#   define get_unaligned	__get_unaligned_be
+#   define put_unaligned	__put_unaligned_be
+#  endif
 
 # endif	/* __KERNEL__ */
 #endif /* _ASM_MICROBLAZE_UNALIGNED_H */
diff --git a/arch/microblaze/include/asm/unistd.h b/arch/microblaze/include/asm/unistd.h
@@ -383,8 +383,11 @@
 #define __NR_rt_tgsigqueueinfo	365 /* new */
 #define __NR_perf_event_open	366 /* new */
 #define __NR_recvmmsg		367 /* new */
+#define __NR_fanotify_init	368
+#define __NR_fanotify_mark	369
+#define __NR_prlimit64		370
 
-#define __NR_syscalls		368
+#define __NR_syscalls		371
 
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__

diff --git a/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c b/arch/microblaze/kernel/cpu/cpuinfo-pvr-full.c
@@ -72,6 +72,7 @@ void set_cpuinfo_pvr_full(struct cpuinfo *ci, struct device_node *cpu)
 	CI(pvr_user2, USER2);
 
 	CI(mmu, USE_MMU);
+	CI(endian, ENDIAN);
 
 	CI(use_icache, USE_ICACHE);
 	CI(icache_tagbits, ICACHE_ADDR_TAG_BITS);

diff --git a/arch/microblaze/kernel/cpu/cpuinfo-static.c b/arch/microblaze/kernel/cpu/cpuinfo-static.c
@@ -119,6 +119,7 @@ void __init set_cpuinfo_static(struct cpuinfo *ci, struct device_node *cpu)
 	ci->pvr_user2 = fcpu(cpu, "xlnx,pvr-user2");
 
 	ci->mmu = fcpu(cpu, "xlnx,use-mmu");
+	ci->endian = fcpu(cpu, "xlnx,endianness");
 
 	ci->ver_code = 0;
 	ci->fpga_family_code = 0;

diff --git a/arch/microblaze/kernel/cpu/cpuinfo.c b/arch/microblaze/kernel/cpu/cpuinfo.c
@@ -30,6 +30,8 @@ const struct cpu_ver_key cpu_ver_lookup[] = {
 	{"7.20.c", 0x0e},
 	{"7.20.d", 0x0f},
 	{"7.30.a", 0x10},
+	{"7.30.b", 0x11},
+	{"8.00.a", 0x12},
 	{NULL, 0},
 };
 

diff --git a/arch/microblaze/kernel/cpu/mb.c b/arch/microblaze/kernel/cpu/mb.c
@@ -51,11 +51,12 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	count = seq_printf(m,
 			"CPU-Family:	MicroBlaze\n"
 			"FPGA-Arch:	%s\n"
-			"CPU-Ver:	%s\n"
+			"CPU-Ver:	%s, %s endian\n"
 			"CPU-MHz:	%d.%02d\n"
 			"BogoMips:	%lu.%02lu\n",
 			fpga_family,
 			cpu_ver,
+			cpuinfo.endian ? "little" : "big",
 			cpuinfo.cpu_clock_freq /
 			1000000,
 			cpuinfo.cpu_clock_freq %

diff --git a/arch/microblaze/kernel/cpu/pvr.c b/arch/microblaze/kernel/cpu/pvr.c
@@ -27,7 +27,7 @@
 	register unsigned tmp __asm__("r3");			\
 	tmp = 0x0;	/* Prevent warning about unused */	\
 	__asm__ __volatile__ (					\
-			".byte 0x94,0x60,0xa0, " #pvrid "\n\t"	\
+			"mfs	%0, rpvr" #pvrid ";"	\
 			: "=r" (tmp) : : "memory"); 		\
 	val = tmp;						\
 }