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-rw-r--r--arch/powerpc/kernel/asm-offsets.c6
-rw-r--r--arch/powerpc/platforms/iseries/exception.S12
-rw-r--r--arch/powerpc/platforms/iseries/lpardata.c39
-rw-r--r--include/asm-powerpc/iseries/alpaca.h31
4 files changed, 84 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index e932b43bd82..292c6d8db0e 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -44,6 +44,9 @@
#include <asm/mmu.h>
#include <asm/hvcall.h>
#endif
+#ifdef CONFIG_PPC_ISERIES
+#include <asm/iseries/alpaca.h>
+#endif
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
@@ -321,6 +324,9 @@ int main(void)
DEFINE(PAGE_OFFSET_VSID, KERNEL_VSID(PAGE_OFFSET));
DEFINE(VMALLOC_START_ESID, GET_ESID(VMALLOC_START));
DEFINE(VMALLOC_START_VSID, KERNEL_VSID(VMALLOC_START));
+
+ /* alpaca */
+ DEFINE(ALPACA_SIZE, sizeof(struct alpaca));
#endif
DEFINE(PGD_TABLE_SIZE, PGD_TABLE_SIZE);
diff --git a/arch/powerpc/platforms/iseries/exception.S b/arch/powerpc/platforms/iseries/exception.S
index 5381038f088..c775cd4b3d6 100644
--- a/arch/powerpc/platforms/iseries/exception.S
+++ b/arch/powerpc/platforms/iseries/exception.S
@@ -38,11 +38,19 @@
.globl system_reset_iSeries
system_reset_iSeries:
- mfspr r13,SPRN_SPRG3 /* Get paca address */
+ mfspr r13,SPRN_SPRG3 /* Get alpaca address */
+ LOAD_REG_IMMEDIATE(r23, alpaca)
+ li r0,ALPACA_SIZE
+ sub r23,r13,r23
+ divdu r23,r23,r0 /* r23 has cpu number */
+ LOAD_REG_IMMEDIATE(r13, paca)
+ mulli r0,r23,PACA_SIZE
+ add r13,r13,r0
+ mtspr SPRN_SPRG3,r13 /* Save it away for the future */
mfmsr r24
ori r24,r24,MSR_RI
mtmsrd r24 /* RI on */
- lhz r24,PACAPACAINDEX(r13) /* Get processor # */
+ mr r24,r23
cmpwi 0,r24,0 /* Are we processor 0? */
bne 1f
b .__start_initialization_iSeries /* Start up the first processor */
diff --git a/arch/powerpc/platforms/iseries/lpardata.c b/arch/powerpc/platforms/iseries/lpardata.c
index 8162049bb04..dc8470850a8 100644
--- a/arch/powerpc/platforms/iseries/lpardata.c
+++ b/arch/powerpc/platforms/iseries/lpardata.c
@@ -18,6 +18,7 @@
#include <asm/paca.h>
#include <asm/iseries/lpar_map.h>
#include <asm/iseries/it_lp_queue.h>
+#include <asm/iseries/alpaca.h>
#include "naca.h"
#include "vpd_areas.h"
@@ -159,6 +160,40 @@ struct SpCommArea xSpCommArea = {
.xFormat = 1,
};
+#define ALPACA_INIT(number) \
+{ \
+ .lppaca_ptr = &lppaca[number], \
+ .reg_save_ptr = &iseries_reg_save[number], \
+}
+
+struct alpaca alpaca[] = {
+ ALPACA_INIT( 0),
+#if NR_CPUS > 1
+ ALPACA_INIT( 1), ALPACA_INIT( 2), ALPACA_INIT( 3),
+#if NR_CPUS > 4
+ ALPACA_INIT( 4), ALPACA_INIT( 5), ALPACA_INIT( 6), ALPACA_INIT( 7),
+#if NR_CPUS > 8
+ ALPACA_INIT( 8), ALPACA_INIT( 9), ALPACA_INIT(10), ALPACA_INIT(11),
+ ALPACA_INIT(12), ALPACA_INIT(13), ALPACA_INIT(14), ALPACA_INIT(15),
+ ALPACA_INIT(16), ALPACA_INIT(17), ALPACA_INIT(18), ALPACA_INIT(19),
+ ALPACA_INIT(20), ALPACA_INIT(21), ALPACA_INIT(22), ALPACA_INIT(23),
+ ALPACA_INIT(24), ALPACA_INIT(25), ALPACA_INIT(26), ALPACA_INIT(27),
+ ALPACA_INIT(28), ALPACA_INIT(29), ALPACA_INIT(30), ALPACA_INIT(31),
+#if NR_CPUS > 32
+ ALPACA_INIT(32), ALPACA_INIT(33), ALPACA_INIT(34), ALPACA_INIT(35),
+ ALPACA_INIT(36), ALPACA_INIT(37), ALPACA_INIT(38), ALPACA_INIT(39),
+ ALPACA_INIT(40), ALPACA_INIT(41), ALPACA_INIT(42), ALPACA_INIT(43),
+ ALPACA_INIT(44), ALPACA_INIT(45), ALPACA_INIT(46), ALPACA_INIT(47),
+ ALPACA_INIT(48), ALPACA_INIT(49), ALPACA_INIT(50), ALPACA_INIT(51),
+ ALPACA_INIT(52), ALPACA_INIT(53), ALPACA_INIT(54), ALPACA_INIT(55),
+ ALPACA_INIT(56), ALPACA_INIT(57), ALPACA_INIT(58), ALPACA_INIT(59),
+ ALPACA_INIT(60), ALPACA_INIT(61), ALPACA_INIT(62), ALPACA_INIT(63),
+#endif
+#endif
+#endif
+#endif
+};
+
/* The LparMap data is now located at offset 0x6000 in head.S
* It was put there so that the HvReleaseData could address it
* with a 32-bit offset as required by the iSeries hypervisor
@@ -185,7 +220,7 @@ struct ItVpdAreas itVpdAreas = {
.xSlicVpdLens = { /* VPD lengths */
0,0,0, /* 0 - 2 */
sizeof(xItExtVpdPanel), /* 3 Extended VPD */
- sizeof(struct paca_struct), /* 4 length of Paca */
+ sizeof(struct alpaca), /* 4 length of (fake) Paca */
0, /* 5 */
sizeof(struct ItIplParmsReal),/* 6 length of IPL parms */
26992, /* 7 length of MS VPD */
@@ -203,7 +238,7 @@ struct ItVpdAreas itVpdAreas = {
.xSlicVpdAdrs = { /* VPD addresses */
0,0,0, /* 0 - 2 */
&xItExtVpdPanel, /* 3 Extended VPD */
- &paca[0], /* 4 first Paca */
+ &alpaca[0], /* 4 first (fake) Paca */
0, /* 5 */
&xItIplParmsReal, /* 6 IPL parms */
&xMsVpd, /* 7 MS Vpd */
diff --git a/include/asm-powerpc/iseries/alpaca.h b/include/asm-powerpc/iseries/alpaca.h
new file mode 100644
index 00000000000..26fc081cb84
--- /dev/null
+++ b/include/asm-powerpc/iseries/alpaca.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright © 2008 Stephen Rothwell IBM Corporation
+ *
+ * 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.
+ *
+ * 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
+ */
+#ifndef _ASM_POWERPC_ISERIES_ALPACA_H
+#define _ASM_POWERPC_ISERIES_ALPACA_H
+
+/*
+ * This is the part of the paca that the iSeries hypervisor
+ * needs to be statically initialised. Immediately after boot
+ * we switch to the normal Linux paca.
+ */
+struct alpaca {
+ struct lppaca *lppaca_ptr; /* Pointer to LpPaca for PLIC */
+ void *reg_save_ptr; /* Pointer to LpRegSave for PLIC */
+};
+
+#endif /* _ASM_POWERPC_ISERIES_ALPACA_H */