diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/parisc/kernel/hpmc.S')
| -rw-r--r-- | ANDROID_3.4.5/arch/parisc/kernel/hpmc.S | 305 |
1 files changed, 0 insertions, 305 deletions
diff --git a/ANDROID_3.4.5/arch/parisc/kernel/hpmc.S b/ANDROID_3.4.5/arch/parisc/kernel/hpmc.S deleted file mode 100644 index 5595a2f3..00000000 --- a/ANDROID_3.4.5/arch/parisc/kernel/hpmc.S +++ /dev/null @@ -1,305 +0,0 @@ -/* - * HPMC (High Priority Machine Check) handler. - * - * Copyright (C) 1999 Philipp Rumpf <prumpf@tux.org> - * Copyright (C) 1999 Hewlett-Packard (Frank Rowand) - * Copyright (C) 2000 Hewlett-Packard (John Marvin) - * - * 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, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - - -/* - * This HPMC handler retrieves the HPMC pim data, resets IO and - * returns to the default trap handler with code set to 1 (HPMC). - * The default trap handler calls handle interruption, which - * does a stack and register dump. This at least allows kernel - * developers to get back to C code in virtual mode, where they - * have the option to examine and print values from memory that - * would help in debugging an HPMC caused by a software bug. - * - * There is more to do here: - * - * 1) On MP systems we need to synchronize processors - * before calling pdc/iodc. - * 2) We should be checking the system state and not - * returning to the fault handler if things are really - * bad. - * - */ - - .level 1.1 - .data - -#include <asm/assembly.h> -#include <asm/pdc.h> - -#include <linux/linkage.h> - - /* - * stack for os_hpmc, the HPMC handler. - * buffer for IODC procedures (for the HPMC handler). - * - * IODC requires 7K byte stack. That leaves 1K byte for os_hpmc. - */ - - .align PAGE_SIZE -hpmc_stack: - .block 16384 - -#define HPMC_IODC_BUF_SIZE 0x8000 - - .align PAGE_SIZE -hpmc_iodc_buf: - .block HPMC_IODC_BUF_SIZE - - .align 8 -hpmc_raddr: - .block 128 - -#define HPMC_PIM_DATA_SIZE 896 /* Enough to hold all architected 2.0 state */ - - .align 8 -ENTRY(hpmc_pim_data) - .block HPMC_PIM_DATA_SIZE -END(hpmc_pim_data) - - .text - - .import intr_save, code -ENTRY(os_hpmc) -.os_hpmc: - - /* - * registers modified: - * - * Using callee saves registers without saving them. The - * original values are in the pim dump if we need them. - * - * r2 (rp) return pointer - * r3 address of PDCE_PROC - * r4 scratch - * r5 scratch - * r23 (arg3) procedure arg - * r24 (arg2) procedure arg - * r25 (arg1) procedure arg - * r26 (arg0) procedure arg - * r30 (sp) stack pointer - * - * registers read: - * - * r26 contains address of PDCE_PROC on entry - * r28 (ret0) return value from procedure - */ - - copy arg0, %r3 /* save address of PDCE_PROC */ - - /* - * disable nested HPMCs - * - * Increment os_hpmc checksum to invalidate it. - * Do this before turning the PSW M bit off. - */ - - mfctl %cr14, %r4 - ldw 52(%r4),%r5 - addi 1,%r5,%r5 - stw %r5,52(%r4) - - /* MP_FIXME: synchronize all processors. */ - - /* Setup stack pointer. */ - - load32 PA(hpmc_stack),sp - - ldo 128(sp),sp /* leave room for arguments */ - - /* - * Most PDC routines require that the M bit be off. - * So turn on the Q bit and turn off the M bit. - */ - - ldo 8(%r0),%r4 /* PSW Q on, PSW M off */ - mtctl %r4,ipsw - mtctl %r0,pcsq - mtctl %r0,pcsq - load32 PA(os_hpmc_1),%r4 - mtctl %r4,pcoq - ldo 4(%r4),%r4 - mtctl %r4,pcoq - rfi - nop - -os_hpmc_1: - - /* Call PDC_PIM to get HPMC pim info */ - - /* - * Note that on some newer boxes, PDC_PIM must be called - * before PDC_IO if you want IO to be reset. PDC_PIM sets - * a flag that PDC_IO examines. - */ - - ldo PDC_PIM(%r0), arg0 - ldo PDC_PIM_HPMC(%r0),arg1 /* Transfer HPMC data */ - load32 PA(hpmc_raddr),arg2 - load32 PA(hpmc_pim_data),arg3 - load32 HPMC_PIM_DATA_SIZE,%r4 - stw %r4,-52(sp) - - ldil L%PA(os_hpmc_2), rp - bv (r3) /* call pdce_proc */ - ldo R%PA(os_hpmc_2)(rp), rp - -os_hpmc_2: - comib,<> 0,ret0, os_hpmc_fail - - /* Reset IO by calling the hversion dependent PDC_IO routine */ - - ldo PDC_IO(%r0),arg0 - ldo 0(%r0),arg1 /* log IO errors */ - ldo 0(%r0),arg2 /* reserved */ - ldo 0(%r0),arg3 /* reserved */ - stw %r0,-52(sp) /* reserved */ - - ldil L%PA(os_hpmc_3),rp - bv (%r3) /* call pdce_proc */ - ldo R%PA(os_hpmc_3)(rp),rp - -os_hpmc_3: - - /* FIXME? Check for errors from PDC_IO (-1 might be OK) */ - - /* - * Initialize the IODC console device (HPA,SPA, path etc. - * are stored on page 0. - */ - - /* - * Load IODC into hpmc_iodc_buf by calling PDC_IODC. - * Note that PDC_IODC handles flushing the appropriate - * data and instruction cache lines. - */ - - ldo PDC_IODC(%r0),arg0 - ldo PDC_IODC_READ(%r0),arg1 - load32 PA(hpmc_raddr),arg2 - ldw BOOT_CONSOLE_HPA_OFFSET(%r0),arg3 /* console hpa */ - ldo PDC_IODC_RI_INIT(%r0),%r4 - stw %r4,-52(sp) - load32 PA(hpmc_iodc_buf),%r4 - stw %r4,-56(sp) - load32 HPMC_IODC_BUF_SIZE,%r4 - stw %r4,-60(sp) - - ldil L%PA(os_hpmc_4),rp - bv (%r3) /* call pdce_proc */ - ldo R%PA(os_hpmc_4)(rp),rp - -os_hpmc_4: - comib,<> 0,ret0,os_hpmc_fail - - /* Call the entry init (just loaded by PDC_IODC) */ - - ldw BOOT_CONSOLE_HPA_OFFSET(%r0),arg0 /* console hpa */ - ldo ENTRY_INIT_MOD_DEV(%r0), arg1 - ldw BOOT_CONSOLE_SPA_OFFSET(%r0),arg2 /* console spa */ - depi 0,31,11,arg2 /* clear bits 21-31 */ - ldo BOOT_CONSOLE_PATH_OFFSET(%r0),arg3 /* console path */ - load32 PA(hpmc_raddr),%r4 - stw %r4, -52(sp) - stw %r0, -56(sp) /* HV */ - stw %r0, -60(sp) /* HV */ - stw %r0, -64(sp) /* HV */ - stw %r0, -68(sp) /* lang, must be zero */ - - load32 PA(hpmc_iodc_buf),%r5 - ldil L%PA(os_hpmc_5),rp - bv (%r5) - ldo R%PA(os_hpmc_5)(rp),rp - -os_hpmc_5: - comib,<> 0,ret0,os_hpmc_fail - - /* Prepare to call intr_save */ - - /* - * Load kernel page directory (load into user also, since - * we don't intend to ever return to user land anyway) - */ - - load32 PA(swapper_pg_dir),%r4 - mtctl %r4,%cr24 /* Initialize kernel root pointer */ - mtctl %r4,%cr25 /* Initialize user root pointer */ - - /* Clear sr4-sr7 */ - - mtsp %r0, %sr4 - mtsp %r0, %sr5 - mtsp %r0, %sr6 - mtsp %r0, %sr7 - - tovirt_r1 %r30 /* make sp virtual */ - - rsm 8,%r0 /* Clear Q bit */ - ldi 1,%r8 /* Set trap code to "1" for HPMC */ - load32 PA(intr_save),%r1 - be 0(%sr7,%r1) - nop - -os_hpmc_fail: - - /* - * Reset the system - * - * Some systems may lockup from a broadcast reset, so try the - * hversion PDC_BROADCAST_RESET() first. - * MP_FIXME: reset all processors if more than one central bus. - */ - - /* PDC_BROADCAST_RESET() */ - - ldo PDC_BROADCAST_RESET(%r0),arg0 - ldo 0(%r0),arg1 /* do reset */ - - ldil L%PA(os_hpmc_6),rp - bv (%r3) /* call pdce_proc */ - ldo R%PA(os_hpmc_6)(rp),rp - -os_hpmc_6: - - /* - * possible return values: - * -1 non-existent procedure - * -2 non-existent option - * -16 unaligned stack - * - * If call returned, do a broadcast reset. - */ - - ldil L%0xfffc0000,%r4 /* IO_BROADCAST */ - ldo 5(%r0),%r5 - stw %r5,48(%r4) /* CMD_RESET to IO_COMMAND offset */ - - b . - nop -ENDPROC(os_hpmc) -.os_hpmc_end: - nop -.data -.align 4 - .export os_hpmc_size -os_hpmc_size: - .word .os_hpmc_end-.os_hpmc |