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-rw-r--r--arch/powerpc/boot/Makefile5
-rw-r--r--arch/powerpc/boot/dts/iss4xx-mpic.dts155
-rw-r--r--arch/powerpc/boot/dts/iss4xx.dts116
-rw-r--r--arch/powerpc/boot/treeboot-iss4xx.c56
-rwxr-xr-xarch/powerpc/boot/wrapper3
-rw-r--r--arch/powerpc/include/asm/reg.h3
-rw-r--r--arch/powerpc/kernel/cputable.c15
-rw-r--r--arch/powerpc/kernel/head_44x.S2
-rw-r--r--arch/powerpc/platforms/44x/Kconfig11
-rw-r--r--arch/powerpc/platforms/44x/Makefile1
-rw-r--r--arch/powerpc/platforms/44x/iss4xx.c167
11 files changed, 533 insertions, 1 deletions
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 25e889c0c06e..ad0df7d0a643 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -44,6 +44,7 @@ $(obj)/cuboot-taishan.o: BOOTCFLAGS += -mcpu=405
44$(obj)/cuboot-katmai.o: BOOTCFLAGS += -mcpu=405 44$(obj)/cuboot-katmai.o: BOOTCFLAGS += -mcpu=405
45$(obj)/cuboot-acadia.o: BOOTCFLAGS += -mcpu=405 45$(obj)/cuboot-acadia.o: BOOTCFLAGS += -mcpu=405
46$(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405 46$(obj)/treeboot-walnut.o: BOOTCFLAGS += -mcpu=405
47$(obj)/treeboot-iss4xx.o: BOOTCFLAGS += -mcpu=405
47$(obj)/virtex405-head.o: BOOTAFLAGS += -mcpu=405 48$(obj)/virtex405-head.o: BOOTAFLAGS += -mcpu=405
48 49
49 50
@@ -77,7 +78,7 @@ src-plat := of.c cuboot-52xx.c cuboot-824x.c cuboot-83xx.c cuboot-85xx.c holly.c
77 cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \ 78 cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
78 virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \ 79 virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
79 cuboot-acadia.c cuboot-amigaone.c cuboot-kilauea.c \ 80 cuboot-acadia.c cuboot-amigaone.c cuboot-kilauea.c \
80 gamecube-head.S gamecube.c wii-head.S wii.c 81 gamecube-head.S gamecube.c wii-head.S wii.c treeboot-iss4xx.c
81src-boot := $(src-wlib) $(src-plat) empty.c 82src-boot := $(src-wlib) $(src-plat) empty.c
82 83
83src-boot := $(addprefix $(obj)/, $(src-boot)) 84src-boot := $(addprefix $(obj)/, $(src-boot))
@@ -206,6 +207,8 @@ image-$(CONFIG_TAISHAN) += cuImage.taishan
206image-$(CONFIG_KATMAI) += cuImage.katmai 207image-$(CONFIG_KATMAI) += cuImage.katmai
207image-$(CONFIG_WARP) += cuImage.warp 208image-$(CONFIG_WARP) += cuImage.warp
208image-$(CONFIG_YOSEMITE) += cuImage.yosemite 209image-$(CONFIG_YOSEMITE) += cuImage.yosemite
210image-$(CONFIG_ISS4xx) += treeImage.iss4xx \
211 treeImage.iss4xx-mpic
209 212
210# Board ports in arch/powerpc/platform/8xx/Kconfig 213# Board ports in arch/powerpc/platform/8xx/Kconfig
211image-$(CONFIG_MPC86XADS) += cuImage.mpc866ads 214image-$(CONFIG_MPC86XADS) += cuImage.mpc866ads
diff --git a/arch/powerpc/boot/dts/iss4xx-mpic.dts b/arch/powerpc/boot/dts/iss4xx-mpic.dts
new file mode 100644
index 000000000000..23e9d9b7e400
--- /dev/null
+++ b/arch/powerpc/boot/dts/iss4xx-mpic.dts
@@ -0,0 +1,155 @@
1/*
2 * Device Tree Source for IBM Embedded PPC 476 Platform
3 *
4 * Copyright 2010 Torez Smith, IBM Corporation.
5 *
6 * Based on earlier code:
7 * Copyright (c) 2006, 2007 IBM Corp.
8 * Josh Boyer <jwboyer@linux.vnet.ibm.com>, David Gibson <dwg@au1.ibm.com>
9 *
10 * This file is licensed under the terms of the GNU General Public
11 * License version 2. This program is licensed "as is" without
12 * any warranty of any kind, whether express or implied.
13 */
14
15/dts-v1/;
16
17/memreserve/ 0x01f00000 0x00100000;
18
19/ {
20 #address-cells = <2>;
21 #size-cells = <1>;
22 model = "ibm,iss-4xx";
23 compatible = "ibm,iss-4xx";
24 dcr-parent = <&{/cpus/cpu@0}>;
25
26 aliases {
27 serial0 = &UART0;
28 };
29
30 cpus {
31 #address-cells = <1>;
32 #size-cells = <0>;
33
34 cpu@0 {
35 device_type = "cpu";
36 model = "PowerPC,4xx"; // real CPU changed in sim
37 reg = <0>;
38 clock-frequency = <100000000>; // 100Mhz :-)
39 timebase-frequency = <100000000>;
40 i-cache-line-size = <32>;
41 d-cache-line-size = <32>;
42 i-cache-size = <32768>;
43 d-cache-size = <32768>;
44 dcr-controller;
45 dcr-access-method = "native";
46 status = "ok";
47 };
48 cpu@1 {
49 device_type = "cpu";
50 model = "PowerPC,4xx"; // real CPU changed in sim
51 reg = <1>;
52 clock-frequency = <100000000>; // 100Mhz :-)
53 timebase-frequency = <100000000>;
54 i-cache-line-size = <32>;
55 d-cache-line-size = <32>;
56 i-cache-size = <32768>;
57 d-cache-size = <32768>;
58 dcr-controller;
59 dcr-access-method = "native";
60 status = "disabled";
61 enable-method = "spin-table";
62 cpu-release-addr = <0 0x01f00100>;
63 };
64 cpu@2 {
65 device_type = "cpu";
66 model = "PowerPC,4xx"; // real CPU changed in sim
67 reg = <2>;
68 clock-frequency = <100000000>; // 100Mhz :-)
69 timebase-frequency = <100000000>;
70 i-cache-line-size = <32>;
71 d-cache-line-size = <32>;
72 i-cache-size = <32768>;
73 d-cache-size = <32768>;
74 dcr-controller;
75 dcr-access-method = "native";
76 status = "disabled";
77 enable-method = "spin-table";
78 cpu-release-addr = <0 0x01f00200>;
79 };
80 cpu@3 {
81 device_type = "cpu";
82 model = "PowerPC,4xx"; // real CPU changed in sim
83 reg = <3>;
84 clock-frequency = <100000000>; // 100Mhz :-)
85 timebase-frequency = <100000000>;
86 i-cache-line-size = <32>;
87 d-cache-line-size = <32>;
88 i-cache-size = <32768>;
89 d-cache-size = <32768>;
90 dcr-controller;
91 dcr-access-method = "native";
92 status = "disabled";
93 enable-method = "spin-table";
94 cpu-release-addr = <0 0x01f00300>;
95 };
96 };
97
98 memory {
99 device_type = "memory";
100 reg = <0x00000000 0x00000000 0x00000000>; // Filled in by zImage
101
102 };
103
104 MPIC: interrupt-controller {
105 compatible = "chrp,open-pic";
106 interrupt-controller;
107 dcr-reg = <0xffc00000 0x00030000>;
108 #address-cells = <0>;
109 #size-cells = <0>;
110 #interrupt-cells = <2>;
111
112 };
113
114 plb {
115 compatible = "ibm,plb-4xx", "ibm,plb4"; /* Could be PLB6, doesn't matter */
116 #address-cells = <2>;
117 #size-cells = <1>;
118 ranges;
119 clock-frequency = <0>; // Filled in by zImage
120
121 POB0: opb {
122 compatible = "ibm,opb-4xx", "ibm,opb";
123 #address-cells = <1>;
124 #size-cells = <1>;
125 /* Wish there was a nicer way of specifying a full 32-bit
126 range */
127 ranges = <0x00000000 0x00000001 0x00000000 0x80000000
128 0x80000000 0x00000001 0x80000000 0x80000000>;
129 clock-frequency = <0>; // Filled in by zImage
130 UART0: serial@40000200 {
131 device_type = "serial";
132 compatible = "ns16550a";
133 reg = <0x40000200 0x00000008>;
134 virtual-reg = <0xe0000200>;
135 clock-frequency = <11059200>;
136 current-speed = <115200>;
137 interrupt-parent = <&MPIC>;
138 interrupts = <0x0 0x2>;
139 };
140 };
141 };
142
143 nvrtc {
144 compatible = "ds1743-nvram", "ds1743", "rtc-ds1743";
145 reg = <0 0xEF703000 0x2000>;
146 };
147 iss-block {
148 compatible = "ibm,iss-sim-block-device";
149 reg = <0 0xEF701000 0x1000>;
150 };
151
152 chosen {
153 linux,stdout-path = "/plb/opb/serial@40000200";
154 };
155};
diff --git a/arch/powerpc/boot/dts/iss4xx.dts b/arch/powerpc/boot/dts/iss4xx.dts
new file mode 100644
index 000000000000..4ff6555c866d
--- /dev/null
+++ b/arch/powerpc/boot/dts/iss4xx.dts
@@ -0,0 +1,116 @@
1/*
2 * Device Tree Source for IBM Embedded PPC 476 Platform
3 *
4 * Copyright 2010 Torez Smith, IBM Corporation.
5 *
6 * Based on earlier code:
7 * Copyright (c) 2006, 2007 IBM Corp.
8 * Josh Boyer <jwboyer@linux.vnet.ibm.com>, David Gibson <dwg@au1.ibm.com>
9 *
10 * This file is licensed under the terms of the GNU General Public
11 * License version 2. This program is licensed "as is" without
12 * any warranty of any kind, whether express or implied.
13 */
14
15/dts-v1/;
16
17/ {
18 #address-cells = <2>;
19 #size-cells = <1>;
20 model = "ibm,iss-4xx";
21 compatible = "ibm,iss-4xx";
22 dcr-parent = <&{/cpus/cpu@0}>;
23
24 aliases {
25 serial0 = &UART0;
26 };
27
28 cpus {
29 #address-cells = <1>;
30 #size-cells = <0>;
31
32 cpu@0 {
33 device_type = "cpu";
34 model = "PowerPC,4xx"; // real CPU changed in sim
35 reg = <0x00000000>;
36 clock-frequency = <100000000>; // 100Mhz :-)
37 timebase-frequency = <100000000>;
38 i-cache-line-size = <32>; // may need fixup in sim
39 d-cache-line-size = <32>; // may need fixup in sim
40 i-cache-size = <32768>; /* may need fixup in sim */
41 d-cache-size = <32768>; /* may need fixup in sim */
42 dcr-controller;
43 dcr-access-method = "native";
44 };
45 };
46
47 memory {
48 device_type = "memory";
49 reg = <0x00000000 0x00000000 0x00000000>; // Filled in by zImage
50 };
51
52 UIC0: interrupt-controller0 {
53 compatible = "ibm,uic-4xx", "ibm,uic";
54 interrupt-controller;
55 cell-index = <0>;
56 dcr-reg = <0x0c0 0x009>;
57 #address-cells = <0>;
58 #size-cells = <0>;
59 #interrupt-cells = <2>;
60
61 };
62
63 UIC1: interrupt-controller1 {
64 compatible = "ibm,uic-4xx", "ibm,uic";
65 interrupt-controller;
66 cell-index = <1>;
67 dcr-reg = <0x0d0 0x009>;
68 #address-cells = <0>;
69 #size-cells = <0>;
70 #interrupt-cells = <2>;
71 interrupts = <0x1e 0x4 0x1f 0x4>; /* cascade */
72 interrupt-parent = <&UIC0>;
73 };
74
75 plb {
76 compatible = "ibm,plb-4xx", "ibm,plb4"; /* Could be PLB6, doesn't matter */
77 #address-cells = <2>;
78 #size-cells = <1>;
79 ranges;
80 clock-frequency = <0>; // Filled in by zImage
81
82 POB0: opb {
83 compatible = "ibm,opb-4xx", "ibm,opb";
84 #address-cells = <1>;
85 #size-cells = <1>;
86 /* Wish there was a nicer way of specifying a full 32-bit
87 range */
88 ranges = <0x00000000 0x00000001 0x00000000 0x80000000
89 0x80000000 0x00000001 0x80000000 0x80000000>;
90 clock-frequency = <0>; // Filled in by zImage
91 UART0: serial@40000200 {
92 device_type = "serial";
93 compatible = "ns16550a";
94 reg = <0x40000200 0x00000008>;
95 virtual-reg = <0xe0000200>;
96 clock-frequency = <11059200>;
97 current-speed = <115200>;
98 interrupt-parent = <&UIC0>;
99 interrupts = <0x0 0x4>;
100 };
101 };
102 };
103
104 nvrtc {
105 compatible = "ds1743-nvram", "ds1743", "rtc-ds1743";
106 reg = <0 0xEF703000 0x2000>;
107 };
108 iss-block {
109 compatible = "ibm,iss-sim-block-device";
110 reg = <0 0xEF701000 0x1000>;
111 };
112
113 chosen {
114 linux,stdout-path = "/plb/opb/serial@40000200";
115 };
116};
diff --git a/arch/powerpc/boot/treeboot-iss4xx.c b/arch/powerpc/boot/treeboot-iss4xx.c
new file mode 100644
index 000000000000..fcc44952874e
--- /dev/null
+++ b/arch/powerpc/boot/treeboot-iss4xx.c
@@ -0,0 +1,56 @@
1/*
2 * Copyright 2010 Ben. Herrenschmidt, IBM Corporation.
3 *
4 * Based on earlier code:
5 * Copyright (C) Paul Mackerras 1997.
6 *
7 * Matt Porter <mporter@kernel.crashing.org>
8 * Copyright 2002-2005 MontaVista Software Inc.
9 *
10 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
11 * Copyright (c) 2003, 2004 Zultys Technologies
12 *
13 * Copyright 2007 David Gibson, IBM Corporation.
14 *
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version
18 * 2 of the License, or (at your option) any later version.
19 */
20#include <stdarg.h>
21#include <stddef.h>
22#include "types.h"
23#include "elf.h"
24#include "string.h"
25#include "stdio.h"
26#include "page.h"
27#include "ops.h"
28#include "reg.h"
29#include "io.h"
30#include "dcr.h"
31#include "4xx.h"
32#include "44x.h"
33#include "libfdt.h"
34
35BSS_STACK(4096);
36
37static void iss_4xx_fixups(void)
38{
39 ibm4xx_sdram_fixup_memsize();
40}
41
42#define SPRN_PIR 0x11E /* Processor Indentification Register */
43void platform_init(void)
44{
45 unsigned long end_of_ram = 0x08000000;
46 unsigned long avail_ram = end_of_ram - (unsigned long)_end;
47 u32 pir_reg;
48
49 simple_alloc_init(_end, avail_ram, 128, 64);
50 platform_ops.fixups = iss_4xx_fixups;
51 platform_ops.exit = ibm44x_dbcr_reset;
52 pir_reg = mfspr(SPRN_PIR);
53 fdt_set_boot_cpuid_phys(_dtb_start, pir_reg);
54 fdt_init(_dtb_start);
55 serial_console_init();
56}
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index 7160b3b1fb35..cb97e7511d7e 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -241,6 +241,9 @@ gamecube|wii)
241 link_address='0x600000' 241 link_address='0x600000'
242 platformo="$object/$platform-head.o $object/$platform.o" 242 platformo="$object/$platform-head.o $object/$platform.o"
243 ;; 243 ;;
244treeboot-iss4xx-mpic)
245 platformo="$object/treeboot-iss4xx.o"
246 ;;
244esac 247esac
245 248
246vmz="$tmpdir/`basename \"$kernel\"`.$ext" 249vmz="$tmpdir/`basename \"$kernel\"`.$ext"
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index b2d1ac635f22..b68f025924a8 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -854,6 +854,9 @@
854#define PVR_8245 0x80811014 854#define PVR_8245 0x80811014
855#define PVR_8260 PVR_8240 855#define PVR_8260 PVR_8240
856 856
857/* 476 Simulator seems to currently have the PVR of the 602... */
858#define PVR_476_ISS 0x00052000
859
857/* 64-bit processors */ 860/* 64-bit processors */
858/* XXX the prefix should be PVR_, we'll do a global sweep to fix it one day */ 861/* XXX the prefix should be PVR_, we'll do a global sweep to fix it one day */
859#define PV_NORTHSTAR 0x0033 862#define PV_NORTHSTAR 0x0033
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index ad6baf834a76..9556be903e96 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -1715,6 +1715,21 @@ static struct cpu_spec __initdata cpu_specs[] = {
1715 .machine_check = machine_check_47x, 1715 .machine_check = machine_check_47x,
1716 .platform = "ppc470", 1716 .platform = "ppc470",
1717 }, 1717 },
1718 { /* 476 iss */
1719 .pvr_mask = 0xffff0000,
1720 .pvr_value = 0x00050000,
1721 .cpu_name = "476",
1722 .cpu_features = CPU_FTRS_47X,
1723 .cpu_user_features = COMMON_USER_BOOKE |
1724 PPC_FEATURE_HAS_FPU,
1725 .cpu_user_features = COMMON_USER_BOOKE,
1726 .mmu_features = MMU_FTR_TYPE_47x |
1727 MMU_FTR_USE_TLBIVAX_BCAST | MMU_FTR_LOCK_BCAST_INVAL,
1728 .icache_bsize = 32,
1729 .dcache_bsize = 128,
1730 .machine_check = machine_check_47x,
1731 .platform = "ppc470",
1732 },
1718 { /* default match */ 1733 { /* default match */
1719 .pvr_mask = 0x00000000, 1734 .pvr_mask = 0x00000000,
1720 .pvr_value = 0x00000000, 1735 .pvr_value = 0x00000000,
diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
index 1acd175428c4..5ab484ef06a7 100644
--- a/arch/powerpc/kernel/head_44x.S
+++ b/arch/powerpc/kernel/head_44x.S
@@ -715,6 +715,8 @@ _GLOBAL(init_cpu_state)
715 srwi r3,r3,16 715 srwi r3,r3,16
716 cmplwi cr0,r3,PVR_476@h 716 cmplwi cr0,r3,PVR_476@h
717 beq head_start_47x 717 beq head_start_47x
718 cmplwi cr0,r3,PVR_476_ISS@h
719 beq head_start_47x
718#endif /* CONFIG_PPC_47x */ 720#endif /* CONFIG_PPC_47x */
719 721
720/* 722/*
diff --git a/arch/powerpc/platforms/44x/Kconfig b/arch/powerpc/platforms/44x/Kconfig
index 9365e530ac5a..eeba0a70e466 100644
--- a/arch/powerpc/platforms/44x/Kconfig
+++ b/arch/powerpc/platforms/44x/Kconfig
@@ -160,6 +160,17 @@ config YOSEMITE
160 help 160 help
161 This option enables support for the AMCC PPC440EP evaluation board. 161 This option enables support for the AMCC PPC440EP evaluation board.
162 162
163config ISS4xx
164 bool "ISS 4xx Simulator"
165 depends on (44x || 40x)
166 default n
167 select 405GP if 40x
168 select 440GP if 44x && !PPC_47x
169 select PPC_FPU
170 select OF_RTC
171 help
172 This option enables support for the IBM ISS simulation environment
173
163#config LUAN 174#config LUAN
164# bool "Luan" 175# bool "Luan"
165# depends on 44x 176# depends on 44x
diff --git a/arch/powerpc/platforms/44x/Makefile b/arch/powerpc/platforms/44x/Makefile
index ee6185aeaa3b..82ff326e0795 100644
--- a/arch/powerpc/platforms/44x/Makefile
+++ b/arch/powerpc/platforms/44x/Makefile
@@ -5,3 +5,4 @@ obj-$(CONFIG_SAM440EP) += sam440ep.o
5obj-$(CONFIG_WARP) += warp.o 5obj-$(CONFIG_WARP) += warp.o
6obj-$(CONFIG_XILINX_VIRTEX_5_FXT) += virtex.o 6obj-$(CONFIG_XILINX_VIRTEX_5_FXT) += virtex.o
7obj-$(CONFIG_XILINX_ML510) += virtex_ml510.o 7obj-$(CONFIG_XILINX_ML510) += virtex_ml510.o
8obj-$(CONFIG_ISS4xx) += iss4xx.o
diff --git a/arch/powerpc/platforms/44x/iss4xx.c b/arch/powerpc/platforms/44x/iss4xx.c
new file mode 100644
index 000000000000..aa46e9d1e771
--- /dev/null
+++ b/arch/powerpc/platforms/44x/iss4xx.c
@@ -0,0 +1,167 @@
1/*
2 * PPC476 board specific routines
3 *
4 * Copyright 2010 Torez Smith, IBM Corporation.
5 *
6 * Based on earlier code:
7 * Matt Porter <mporter@kernel.crashing.org>
8 * Copyright 2002-2005 MontaVista Software Inc.
9 *
10 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
11 * Copyright (c) 2003-2005 Zultys Technologies
12 *
13 * Rewritten and ported to the merged powerpc tree:
14 * Copyright 2007 David Gibson <dwg@au1.ibm.com>, IBM Corporation.
15 *
16 * This program is free software; you can redistribute it and/or modify it
17 * under the terms of the GNU General Public License as published by the
18 * Free Software Foundation; either version 2 of the License, or (at your
19 * option) any later version.
20 */
21
22#include <linux/init.h>
23#include <linux/of_platform.h>
24#include <linux/rtc.h>
25
26#include <asm/machdep.h>
27#include <asm/prom.h>
28#include <asm/udbg.h>
29#include <asm/time.h>
30#include <asm/uic.h>
31#include <asm/ppc4xx.h>
32#include <asm/mpic.h>
33#include <asm/mmu.h>
34
35static __initdata struct of_device_id iss4xx_of_bus[] = {
36 { .compatible = "ibm,plb4", },
37 { .compatible = "ibm,plb6", },
38 { .compatible = "ibm,opb", },
39 { .compatible = "ibm,ebc", },
40 {},
41};
42
43static int __init iss4xx_device_probe(void)
44{
45 of_platform_bus_probe(NULL, iss4xx_of_bus, NULL);
46 of_instantiate_rtc();
47
48 return 0;
49}
50machine_device_initcall(iss4xx, iss4xx_device_probe);
51
52/* We can have either UICs or MPICs */
53static void __init iss4xx_init_irq(void)
54{
55 struct device_node *np;
56
57 /* Find top level interrupt controller */
58 for_each_node_with_property(np, "interrupt-controller") {
59 if (of_get_property(np, "interrupts", NULL) == NULL)
60 break;
61 }
62 if (np == NULL)
63 panic("Can't find top level interrupt controller");
64
65 /* Check type and do appropriate initialization */
66 if (of_device_is_compatible(np, "ibm,uic")) {
67 uic_init_tree();
68 ppc_md.get_irq = uic_get_irq;
69#ifdef CONFIG_MPIC
70 } else if (of_device_is_compatible(np, "chrp,open-pic")) {
71 /* The MPIC driver will get everything it needs from the
72 * device-tree, just pass 0 to all arguments
73 */
74 struct mpic *mpic = mpic_alloc(np, 0, MPIC_PRIMARY, 0, 0,
75 " MPIC ");
76 BUG_ON(mpic == NULL);
77 mpic_init(mpic);
78 ppc_md.get_irq = mpic_get_irq;
79#endif
80 } else
81 panic("Unrecognized top level interrupt controller");
82}
83
84#ifdef CONFIG_SMP
85static void __cpuinit smp_iss4xx_setup_cpu(int cpu)
86{
87 mpic_setup_this_cpu();
88}
89
90static void __cpuinit smp_iss4xx_kick_cpu(int cpu)
91{
92 struct device_node *cpunode = of_get_cpu_node(cpu, NULL);
93 const u64 *spin_table_addr_prop;
94 u32 *spin_table;
95 extern void start_secondary_47x(void);
96
97 BUG_ON(cpunode == NULL);
98
99 /* Assume spin table. We could test for the enable-method in
100 * the device-tree but currently there's little point as it's
101 * our only supported method
102 */
103 spin_table_addr_prop = of_get_property(cpunode, "cpu-release-addr",
104 NULL);
105 if (spin_table_addr_prop == NULL) {
106 pr_err("CPU%d: Can't start, missing cpu-release-addr !\n", cpu);
107 return;
108 }
109
110 /* Assume it's mapped as part of the linear mapping. This is a bit
111 * fishy but will work fine for now
112 */
113 spin_table = (u32 *)__va(*spin_table_addr_prop);
114 pr_debug("CPU%d: Spin table mapped at %p\n", cpu, spin_table);
115
116 spin_table[3] = cpu;
117 smp_wmb();
118 spin_table[1] = __pa(start_secondary_47x);
119 mb();
120}
121
122static struct smp_ops_t iss_smp_ops = {
123 .probe = smp_mpic_probe,
124 .message_pass = smp_mpic_message_pass,
125 .setup_cpu = smp_iss4xx_setup_cpu,
126 .kick_cpu = smp_iss4xx_kick_cpu,
127 .give_timebase = smp_generic_give_timebase,
128 .take_timebase = smp_generic_take_timebase,
129};
130
131static void __init iss4xx_smp_init(void)
132{
133 if (mmu_has_feature(MMU_FTR_TYPE_47x))
134 smp_ops = &iss_smp_ops;
135}
136
137#else /* CONFIG_SMP */
138static void __init iss4xx_smp_init(void) { }
139#endif /* CONFIG_SMP */
140
141static void __init iss4xx_setup_arch(void)
142{
143 iss4xx_smp_init();
144}
145
146/*
147 * Called very early, MMU is off, device-tree isn't unflattened
148 */
149static int __init iss4xx_probe(void)
150{
151 unsigned long root = of_get_flat_dt_root();
152
153 if (!of_flat_dt_is_compatible(root, "ibm,iss-4xx"))
154 return 0;
155
156 return 1;
157}
158
159define_machine(iss4xx) {
160 .name = "ISS-4xx",
161 .probe = iss4xx_probe,
162 .progress = udbg_progress,
163 .init_IRQ = iss4xx_init_irq,
164 .setup_arch = iss4xx_setup_arch,
165 .restart = ppc4xx_reset_system,
166 .calibrate_decr = generic_calibrate_decr,
167};
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-20 09:22:18 -0500