diff options
Diffstat (limited to 'arch/avr32')
| -rw-r--r-- | arch/avr32/boards/atstk1000/atstk1002.c | 2 | ||||
| -rw-r--r-- | arch/avr32/boot/images/.gitignore | 4 | ||||
| -rw-r--r-- | arch/avr32/kernel/.gitignore | 1 | ||||
| -rw-r--r-- | arch/avr32/kernel/asm-offsets.c | 6 | ||||
| -rw-r--r-- | arch/avr32/kernel/avr32_ksyms.c | 1 | ||||
| -rw-r--r-- | arch/avr32/kernel/entry-avr32b.S | 59 | ||||
| -rw-r--r-- | arch/avr32/kernel/syscall-stubs.S | 9 | ||||
| -rw-r--r-- | arch/avr32/kernel/syscall_table.S | 2 | ||||
| -rw-r--r-- | arch/avr32/kernel/traps.c | 8 | ||||
| -rw-r--r-- | arch/avr32/lib/findbit.S | 30 | ||||
| -rw-r--r-- | arch/avr32/mach-at32ap/pm-at32ap700x.S | 2 |
11 files changed, 115 insertions, 9 deletions
diff --git a/arch/avr32/boards/atstk1000/atstk1002.c b/arch/avr32/boards/atstk1000/atstk1002.c index ee4c292683e..dfc3443e23a 100644 --- a/arch/avr32/boards/atstk1000/atstk1002.c +++ b/arch/avr32/boards/atstk1000/atstk1002.c @@ -325,7 +325,7 @@ static int __init atstk1002_init(void) #ifdef CONFIG_BOARD_ATSTK100X_SPI1 at32_add_device_spi(1, spi1_board_info, ARRAY_SIZE(spi1_board_info)); #endif -#ifndef CONFIG_BOARD_ATSTK1002_SW2_CUSTOM +#ifndef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM at32_add_device_mci(0, MCI_PDATA); #endif #ifdef CONFIG_BOARD_ATSTK1002_SW5_CUSTOM diff --git a/arch/avr32/boot/images/.gitignore b/arch/avr32/boot/images/.gitignore new file mode 100644 index 00000000000..64ea9d0141d --- /dev/null +++ b/arch/avr32/boot/images/.gitignore @@ -0,0 +1,4 @@ +uImage +uImage.srec +vmlinux.cso +sfdwarf.log diff --git a/arch/avr32/kernel/.gitignore b/arch/avr32/kernel/.gitignore new file mode 100644 index 00000000000..c5f676c3c22 --- /dev/null +++ b/arch/avr32/kernel/.gitignore @@ -0,0 +1 @@ +vmlinux.lds diff --git a/arch/avr32/kernel/asm-offsets.c b/arch/avr32/kernel/asm-offsets.c index e4796c67a83..d6a8193a1d2 100644 --- a/arch/avr32/kernel/asm-offsets.c +++ b/arch/avr32/kernel/asm-offsets.c @@ -4,6 +4,8 @@ * to extract and format the required data. */ +#include <linux/mm.h> +#include <linux/sched.h> #include <linux/thread_info.h> #include <linux/kbuild.h> @@ -17,4 +19,8 @@ void foo(void) OFFSET(TI_rar_saved, thread_info, rar_saved); OFFSET(TI_rsr_saved, thread_info, rsr_saved); OFFSET(TI_restart_block, thread_info, restart_block); + BLANK(); + OFFSET(TSK_active_mm, task_struct, active_mm); + BLANK(); + OFFSET(MM_pgd, mm_struct, pgd); } diff --git a/arch/avr32/kernel/avr32_ksyms.c b/arch/avr32/kernel/avr32_ksyms.c index 84a7d44edc6..11e310c567a 100644 --- a/arch/avr32/kernel/avr32_ksyms.c +++ b/arch/avr32/kernel/avr32_ksyms.c @@ -58,6 +58,7 @@ EXPORT_SYMBOL(find_first_zero_bit); EXPORT_SYMBOL(find_next_zero_bit); EXPORT_SYMBOL(find_first_bit); EXPORT_SYMBOL(find_next_bit); +EXPORT_SYMBOL(generic_find_next_le_bit); EXPORT_SYMBOL(generic_find_next_zero_le_bit); /* I/O primitives (lib/io-*.S) */ diff --git a/arch/avr32/kernel/entry-avr32b.S b/arch/avr32/kernel/entry-avr32b.S index 2b398cae110..33d49377b8b 100644 --- a/arch/avr32/kernel/entry-avr32b.S +++ b/arch/avr32/kernel/entry-avr32b.S @@ -334,9 +334,64 @@ save_full_context_ex: /* Low-level exception handlers */ handle_critical: + /* + * AT32AP700x errata: + * + * After a Java stack overflow or underflow trap, any CPU + * memory access may cause erratic behavior. This will happen + * when the four least significant bits of the JOSP system + * register contains any value between 9 and 15 (inclusive). + * + * Possible workarounds: + * - Don't use the Java Extension Module + * - Ensure that the stack overflow and underflow trap + * handlers do not do any memory access or trigger any + * exceptions before the overflow/underflow condition is + * cleared (by incrementing or decrementing the JOSP) + * - Make sure that JOSP does not contain any problematic + * value before doing any exception or interrupt + * processing. + * - Set up a critical exception handler which writes a + * known-to-be-safe value, e.g. 4, to JOSP before doing + * any further processing. + * + * We'll use the last workaround for now since we cannot + * guarantee that user space processes don't use Java mode. + * Non-well-behaving userland will be terminated with extreme + * prejudice. + */ +#ifdef CONFIG_CPU_AT32AP700X + /* + * There's a chance we can't touch memory, so temporarily + * borrow PTBR to save the stack pointer while we fix things + * up... + */ + mtsr SYSREG_PTBR, sp + mov sp, 4 + mtsr SYSREG_JOSP, sp + mfsr sp, SYSREG_PTBR + sub pc, -2 + + /* Push most of pt_regs on stack. We'll do the rest later */ sub sp, 4 - stmts --sp, r0-lr - rcall save_full_context_ex + pushm r0-r12 + + /* PTBR mirrors current_thread_info()->task->active_mm->pgd */ + get_thread_info r0 + ld.w r1, r0[TI_task] + ld.w r2, r1[TSK_active_mm] + ld.w r3, r2[MM_pgd] + mtsr SYSREG_PTBR, r3 +#else + sub sp, 4 + pushm r0-r12 +#endif + sub r0, sp, -(14 * 4) + mov r1, lr + mfsr r2, SYSREG_RAR_EX + mfsr r3, SYSREG_RSR_EX + pushm r0-r3 + mfsr r12, SYSREG_ECR mov r11, sp rcall do_critical_exception diff --git a/arch/avr32/kernel/syscall-stubs.S b/arch/avr32/kernel/syscall-stubs.S index 890286a1e62..673178e235f 100644 --- a/arch/avr32/kernel/syscall-stubs.S +++ b/arch/avr32/kernel/syscall-stubs.S @@ -109,3 +109,12 @@ __sys_epoll_pwait: rcall sys_epoll_pwait sub sp, -4 popm pc + + .global __sys_sync_file_range + .type __sys_sync_file_range,@function +__sys_sync_file_range: + pushm lr + st.w --sp, ARG6 + rcall sys_sync_file_range + sub sp, -4 + popm pc diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S index 478bda4c4a0..7ee0057613b 100644 --- a/arch/avr32/kernel/syscall_table.S +++ b/arch/avr32/kernel/syscall_table.S @@ -275,7 +275,7 @@ sys_call_table: .long sys_set_robust_list .long sys_get_robust_list /* 260 */ .long __sys_splice - .long sys_sync_file_range + .long __sys_sync_file_range .long sys_tee .long sys_vmsplice .long __sys_epoll_pwait /* 265 */ diff --git a/arch/avr32/kernel/traps.c b/arch/avr32/kernel/traps.c index b835c4c0136..0d987373bc0 100644 --- a/arch/avr32/kernel/traps.c +++ b/arch/avr32/kernel/traps.c @@ -116,15 +116,15 @@ asmlinkage void do_nmi(unsigned long ecr, struct pt_regs *regs) switch (ret) { case NOTIFY_OK: case NOTIFY_STOP: - return; + break; case NOTIFY_BAD: die("Fatal Non-Maskable Interrupt", regs, SIGINT); default: + printk(KERN_ALERT "Got NMI, but nobody cared. Disabling...\n"); + nmi_disable(); break; } - - printk(KERN_ALERT "Got NMI, but nobody cared. Disabling...\n"); - nmi_disable(); + nmi_exit(); } asmlinkage void do_critical_exception(unsigned long ecr, struct pt_regs *regs) diff --git a/arch/avr32/lib/findbit.S b/arch/avr32/lib/findbit.S index c6b91dee857..997b33b2288 100644 --- a/arch/avr32/lib/findbit.S +++ b/arch/avr32/lib/findbit.S @@ -123,6 +123,36 @@ ENTRY(find_next_bit) brgt 1b retal r11 +ENTRY(generic_find_next_le_bit) + lsr r8, r10, 5 + sub r9, r11, r10 + retle r11 + + lsl r8, 2 + add r12, r8 + andl r10, 31, COH + breq 1f + + /* offset is not word-aligned. Handle the first (32 - r10) bits */ + ldswp.w r8, r12[0] + sub r12, -4 + lsr r8, r8, r10 + brne .L_found + + /* r9 = r9 - (32 - r10) = r9 + r10 - 32 */ + add r9, r10 + sub r9, 32 + retle r11 + + /* Main loop. offset must be word-aligned */ +1: ldswp.w r8, r12[0] + cp.w r8, 0 + brne .L_found + sub r12, -4 + sub r9, 32 + brgt 1b + retal r11 + ENTRY(generic_find_next_zero_le_bit) lsr r8, r10, 5 sub r9, r11, r10 diff --git a/arch/avr32/mach-at32ap/pm-at32ap700x.S b/arch/avr32/mach-at32ap/pm-at32ap700x.S index 5be4de65b20..17503b0ed6c 100644 --- a/arch/avr32/mach-at32ap/pm-at32ap700x.S +++ b/arch/avr32/mach-at32ap/pm-at32ap700x.S @@ -134,7 +134,7 @@ pm_standby: mov r11, SDRAMC_LPR_LPCB_SELF_RFR bfins r10, r11, 0, 2 /* LPCB <- self Refresh */ sync 0 /* flush write buffer */ - st.w r12[SDRAMC_LPR], r11 /* put SDRAM in self-refresh mode */ + st.w r12[SDRAMC_LPR], r10 /* put SDRAM in self-refresh mode */ ld.w r11, r12[SDRAMC_LPR] unmask_interrupts sleep CPU_SLEEP_FROZEN |