-/*
- *
- * This file is subject to the terms and conditions of the GNU General Public
+/* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1999 by Helge Deller
* Copyright 1999 SuSE GmbH (Philipp Rumpf)
* Copyright 1999 Philipp Rumpf (prumpf@tux.org)
+ * Copyright 2000 Hewlett Packard (Paul Bame, bame@puffin.external.hp.com)
+ * Copyright (C) 2001 Grant Grundler (Hewlett Packard)
+ * Copyright (C) 2004 Kyle McMartin <kyle@debian.org>
*
* Initial Version 04-23-1999 by Helge Deller <deller@gmx.de>
*/
-#include <linux/autoconf.h> /* for CONFIG_SMP */
-
-#include <asm/offsets.h>
+#include <asm/asm-offsets.h>
#include <asm/psw.h>
-
+#include <asm/pdc.h>
+
#include <asm/assembly.h>
#include <asm/pgtable.h>
-
- .level 1.1
+ .level LEVEL
.data
.word 0 /* arg3 */
.text
- .align 4
+ .align 4
.import init_thread_union,data
+ .import fault_vector_20,code /* IVA parisc 2.0 32 bit */
+#ifndef CONFIG_64BIT
+ .import fault_vector_11,code /* IVA parisc 1.1 32 bit */
.import $global$ /* forward declaration */
- .import fault_vector_11,code /* IVA parisc 1.1 32 bit */
- .import fault_vector_20,code /* IVA parisc 2.0 32 bit */
-
+#endif /*!CONFIG_64BIT*/
.export stext
.export _stext,data /* Kernel want it this way! */
_stext:
.import __bss_start,data
.import __bss_stop,data
- ldil L%PA(__bss_start),%r3
- ldo R%PA(__bss_start)(%r3),%r3
- ldil L%PA(__bss_stop),%r4
- ldo R%PA(__bss_stop)(%r4),%r4
+ load32 PA(__bss_start),%r3
+ load32 PA(__bss_stop),%r4
$bss_loop:
cmpb,<<,n %r3,%r4,$bss_loop
stw,ma %r0,4(%r3)
/* Save away the arguments the boot loader passed in (32 bit args) */
-
- ldil L%PA(boot_args),%r1
- ldo R%PA(boot_args)(%r1),%r1
+ load32 PA(boot_args),%r1
stw,ma %arg0,4(%r1)
stw,ma %arg1,4(%r1)
stw,ma %arg2,4(%r1)
stw,ma %arg3,4(%r1)
- /* Initialize startup VM. Just map first 8 MB of memory */
- ldil L%PA(pg0),%r1
- ldo R%PA(pg0)(%r1),%r1
- ldo _PAGE_TABLE(%r1),%r3
-
- ldil L%PA(swapper_pg_dir),%r4
- ldo R%PA(swapper_pg_dir)(%r4),%r4
+ /* Initialize startup VM. Just map first 8/16 MB of memory */
+ load32 PA(swapper_pg_dir),%r4
mtctl %r4,%cr24 /* Initialize kernel root pointer */
mtctl %r4,%cr25 /* Initialize user root pointer */
-#if (__PAGE_OFFSET != 0x10000000UL)
-Error! Code below (the next two stw's) needs to be changed
+#if PT_NLEVELS == 3
+ /* Set pmd in pgd */
+ load32 PA(pmd0),%r5
+ shrd %r5,PxD_VALUE_SHIFT,%r3
+ ldo (PxD_FLAG_PRESENT+PxD_FLAG_VALID)(%r3),%r3
+ stw %r3,ASM_PGD_ENTRY*ASM_PGD_ENTRY_SIZE(%r4)
+ ldo ASM_PMD_ENTRY*ASM_PMD_ENTRY_SIZE(%r5),%r4
+#else
+ /* 2-level page table, so pmd == pgd */
+ ldo ASM_PGD_ENTRY*ASM_PGD_ENTRY_SIZE(%r4),%r4
#endif
- stw %r3,0x100(%r4) /* Hardwired 0x1... kernel Vaddr start*/
- ldo 0x1000(%r3),%r3
- stw %r3,0x104(%r4)
- ldo _PAGE_KERNEL(%r0),%r3 /* Hardwired 0 phys addr start */
+ /* Fill in pmd with enough pte directories */
+ load32 PA(pg0),%r1
+ SHRREG %r1,PxD_VALUE_SHIFT,%r3
+ ldo (PxD_FLAG_PRESENT+PxD_FLAG_VALID)(%r3),%r3
+
+ ldi ASM_PT_INITIAL,%r1
+
+1:
+ stw %r3,0(%r4)
+ ldo (ASM_PAGE_SIZE >> PxD_VALUE_SHIFT)(%r3),%r3
+ addib,> -1,%r1,1b
+#if PT_NLEVELS == 3
+ ldo ASM_PMD_ENTRY_SIZE(%r4),%r4
+#else
+ ldo ASM_PGD_ENTRY_SIZE(%r4),%r4
+#endif
+
+
+ /* Now initialize the PTEs themselves */
+ ldo 0+_PAGE_KERNEL(%r0),%r3 /* Hardwired 0 phys addr start */
+ ldi (1<<(KERNEL_INITIAL_ORDER-PAGE_SHIFT)),%r11 /* PFN count */
+ load32 PA(pg0),%r1
+
$pgt_fill_loop:
- stwm %r3,4(%r1)
- ldo 0x1000(%r3),%r3
- bb,>= %r3,8,$pgt_fill_loop
+ STREGM %r3,ASM_PTE_ENTRY_SIZE(%r1)
+ ldo (1<<PFN_PTE_SHIFT)(%r3),%r3 /* add one PFN */
+ addib,> -1,%r11,$pgt_fill_loop
nop
-
/* Load the return address...er...crash 'n burn */
copy %r0,%r2
/* And the RFI Target address too */
- ldil L%start_kernel,%r11
- ldo R%start_kernel(%r11),%r11
+ load32 start_kernel,%r11
/* And the initial task pointer */
-
- ldil L%init_thread_union,%r6
- ldo R%init_thread_union(%r6),%r6
+ load32 init_thread_union,%r6
mtctl %r6,%cr30
/* And the stack pointer too */
-
ldo THREAD_SZ_ALGN(%r6),%sp
/* And the interrupt stack */
-
- ldil L%interrupt_stack,%r6
- ldo R%interrupt_stack(%r6),%r6
+ load32 interrupt_stack,%r6
mtctl %r6,%cr31
#ifdef CONFIG_SMP
** it's just way easier to deal with here because
** of 64-bit function ptrs and the address is local to this file.
*/
- ldil L%PA(smp_slave_stext),%r10
- ldo R%PA(smp_slave_stext)(%r10),%r10
+ load32 PA(smp_slave_stext),%r10
stw %r10,0x10(%r0) /* MEM_RENDEZ */
stw %r0,0x28(%r0) /* MEM_RENDEZ_HI - assume addr < 4GB */
/*
** Code Common to both Monarch and Slave processors.
** Entry:
+ **
+ ** 1.1:
** %r11 must contain RFI target address.
** %r25/%r26 args to pass to target function
** %r2 in case rfi target decides it didn't like something
**
+ ** 2.0w:
+ ** %r3 PDCE_PROC address
+ ** %r11 RFI target address
+ **
** Caller must init: SR4-7, %sp, %r10, %cr24/25,
*/
common_stext:
/* Clear PDC entry point - we won't use it */
stw %r0,0x10(%r0) /* MEM_RENDEZ */
stw %r0,0x28(%r0) /* MEM_RENDEZ_HI */
-#endif
+#endif /*CONFIG_SMP*/
+
+#ifdef CONFIG_64BIT
+ tophys_r1 %sp
+ /* Save the rfi target address */
+ ldd TI_TASK-THREAD_SZ_ALGN(%sp), %r10
+ tophys_r1 %r10
+ std %r11, TASK_PT_GR11(%r10)
+ /* Switch to wide mode Superdome doesn't support narrow PDC
+ ** calls.
+ */
+1: mfia %rp /* clear upper part of pcoq */
+ ldo 2f-1b(%rp),%rp
+ depdi 0,31,32,%rp
+ bv (%rp)
+ ssm PSW_SM_W,%r0
+
+ /* Set Wide mode as the "Default" (eg for traps)
+ ** First trap occurs *right* after (or part of) rfi for slave CPUs.
+ ** Someday, palo might not do this for the Monarch either.
+ */
+2:
+#define MEM_PDC_LO 0x388
+#define MEM_PDC_HI 0x35C
+ ldw MEM_PDC_LO(%r0),%r3
+ ldw MEM_PDC_HI(%r0),%r6
+ depd %r6, 31, 32, %r3 /* move to upper word */
+
+ ldo PDC_PSW(%r0),%arg0 /* 21 */
+ ldo PDC_PSW_SET_DEFAULTS(%r0),%arg1 /* 2 */
+ ldo PDC_PSW_WIDE_BIT(%r0),%arg2 /* 2 */
+ load32 PA(stext_pdc_ret), %rp
+ bv (%r3)
+ copy %r0,%arg3
+
+stext_pdc_ret:
+ /* restore rfi target address*/
+ ldd TI_TASK-THREAD_SZ_ALGN(%sp), %r10
+ tophys_r1 %r10
+ ldd TASK_PT_GR11(%r10), %r11
+ tovirt_r1 %sp
+#endif
+
/* PARANOID: clear user scratch/user space SR's */
mtsp %r0,%sr0
mtsp %r0,%sr1
mtctl %r0,%cr13
/* Initialize the global data pointer */
- ldil L%$global$,%dp
- ldo R%$global$(%dp),%dp
+ loadgp
- /*
- * Set up our interrupt table. HPMCs might not work after this!
+ /* Set up our interrupt table. HPMCs might not work after this!
*
* We need to install the correct iva for PA1.1 or PA2.0. The
* following short sequence of instructions can determine this
* (without being illegal on a PA1.1 machine).
*/
+#ifndef CONFIG_64BIT
ldi 32,%r10
mtctl %r10,%cr11
.level 2.0
ldo R%PA(fault_vector_11)(%r10),%r10
$is_pa20:
- ldil L%PA(fault_vector_20),%r10
- ldo R%PA(fault_vector_20)(%r10),%r10
+ .level LEVEL /* restore 1.1 || 2.0w */
+#endif /*!CONFIG_64BIT*/
+ load32 PA(fault_vector_20),%r10
$install_iva:
mtctl %r10,%cr14
- /* Disable Q bit so we can load the iia queue */
- rsm PSW_SM_Q,%r0
+ b aligned_rfi /* Prepare to RFI! Man all the cannons! */
+ nop
- /* kernel PSW:
- * - no interruptions except HPMC and TOC (which are handled by PDC)
- * - Q bit set (IODC / PDC interruptions)
- * - big-endian
- * - virtually mapped
- */
- ldil L%KERNEL_PSW,%r10
- ldo R%KERNEL_PSW(%r10),%r10
- mtctl %r10,%ipsw
+ .align 128
+aligned_rfi:
+ pcxt_ssm_bug
+
+ rsm PSW_SM_QUIET,%r0 /* off troublesome PSW bits */
+ /* Don't need NOPs, have 8 compliant insn before rfi */
- /* Set the space pointers for the post-RFI world
- ** Clear the two-level IIA Space Queue, effectively setting
- ** Kernel space.
- */
mtctl %r0,%cr17 /* Clear IIASQ tail */
mtctl %r0,%cr17 /* Clear IIASQ head */
ldo 4(%r11),%r11
mtctl %r11,%cr18 /* IIAOQ tail */
- /* Jump to hyperspace */
+ load32 KERNEL_PSW,%r10
+ mtctl %r10,%ipsw
+
+ /* Jump through hyperspace to Virt Mode */
rfi
nop
.import smp_init_current_idle_task,data
.import smp_callin,code
+#ifndef CONFIG_64BIT
smp_callin_rtn:
.proc
.callinfo
nop
nop
.procend
+#endif /*!CONFIG_64BIT*/
/***************************************************************************
-*
* smp_slave_stext is executed by all non-monarch Processors when the Monarch
* pokes the slave CPUs in smp.c:smp_boot_cpus().
*
* mode. Once all available/eligible CPUs are in virtual mode, all are
* released and start out by executing their own idle task.
*****************************************************************************/
-
-
smp_slave_stext:
.proc
.callinfo
mtsp %r0,%sr7
/* Initialize the SP - monarch sets up smp_init_current_idle_task */
- ldil L%PA(smp_init_current_idle_task),%sp
- ldo R%PA(smp_init_current_idle_task)(%sp),%sp
- ldw 0(%sp),%sp /* load task address */
+ load32 PA(smp_init_current_idle_task),%sp
+ LDREG 0(%sp),%sp /* load task address */
+ tophys_r1 %sp
+ LDREG TASK_THREAD_INFO(%sp),%sp
mtctl %sp,%cr30 /* store in cr30 */
- addil L%THREAD_SZ_ALGN,%sp /* stack is above task */
- ldo R%THREAD_SZ_ALGN(%r1),%sp
+ ldo THREAD_SZ_ALGN(%sp),%sp
/* point CPU to kernel page tables */
- ldil L%PA(swapper_pg_dir),%r4
- ldo R%PA(swapper_pg_dir)(%r4),%r4
+ load32 PA(swapper_pg_dir),%r4
mtctl %r4,%cr24 /* Initialize kernel root pointer */
mtctl %r4,%cr25 /* Initialize user root pointer */
+#ifdef CONFIG_64BIT
+ /* Setup PDCE_PROC entry */
+ copy %arg0,%r3
+#else
/* Load RFI *return* address in case smp_callin bails */
- ldil L%smp_callin_rtn,%r2
- ldo R%smp_callin_rtn(%r2),%r2
-
+ load32 smp_callin_rtn,%r2
+#endif
+
/* Load RFI target address. */
- ldil L%smp_callin,%r11
- ldo R%smp_callin(%r11),%r11
+ load32 smp_callin,%r11
/* ok...common code can handle the rest */
b common_stext
.procend
#endif /* CONFIG_SMP */
-
+#ifndef CONFIG_64BIT
.data
.align 4
.size $global$,4
$global$:
.word 0
+#endif /*!CONFIG_64BIT*/
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