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Date: Thu, 25 Jun 2009 17:14:54 -0700
From: "Pan, Jacob jun" <jacob.jun.pan@...el.com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC: "H. Peter Anvin" <hpa@...ux.intel.com>,
"Pan, Jacob jun" <jacob.jun.pan@...el.com>
Subject: [PATCH 6/9] x86: add moorestown specific setup code
>From f648870658331b0337a881a405857dfc0baee6b8 Mon Sep 17 00:00:00 2001
From: Jacob Pan <jacob.jun.pan@...el.com>
Date: Thu, 11 Jun 2009 21:01:00 -0700
Subject: [PATCH] x86: add moorestown specific setup code
Intel moorestown platform does not contain many devices found on a PC.
This patch adds x86_quirks and assigns platform feature sets for
Moorestown.
Signed-off-by: Jacob Pan <jacob.jun.pan@...el.com>
---
arch/x86/include/asm/setup.h | 8 +++
arch/x86/kernel/Makefile | 1 +
arch/x86/kernel/mrst.c | 105 ++++++++++++++++++++++++++++++++++++++++++
arch/x86/kernel/setup.c | 4 +-
4 files changed, 117 insertions(+), 1 deletions(-)
create mode 100644 arch/x86/kernel/mrst.c
diff --git a/arch/x86/include/asm/setup.h b/arch/x86/include/asm/setup.h
index 7bf325a..8253b71 100644
--- a/arch/x86/include/asm/setup.h
+++ b/arch/x86/include/asm/setup.h
@@ -83,6 +83,14 @@ static inline int is_visws_box(void) { return 0; }
extern struct x86_quirks *x86_quirks;
extern unsigned long saved_video_mode;
+#ifdef CONFIG_MRST
+extern void mrst_early_detect(int);
+extern void setup_mrst_default_feature(void);
+#else
+static inline void mrst_early_detect(int subarch) { };
+static inline void setup_mrst_default_feature(void) { };
+#endif
+
#ifndef CONFIG_PARAVIRT
#define paravirt_post_allocator_init() do {} while (0)
#endif
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 8d1ae61..370aba5 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -103,6 +103,7 @@ obj-$(CONFIG_SCx200) += scx200.o
scx200-y += scx200_32.o
obj-$(CONFIG_OLPC) += olpc.o
+obj-$(CONFIG_MRST) += mrst.o
microcode-y := microcode_core.o
microcode-$(CONFIG_MICROCODE_INTEL) += microcode_intel.o
diff --git a/arch/x86/kernel/mrst.c b/arch/x86/kernel/mrst.c
new file mode 100644
index 0000000..56ed345
--- /dev/null
+++ b/arch/x86/kernel/mrst.c
@@ -0,0 +1,105 @@
+/*
+ * mrst.c: Intel Moorestown platform specific setup code
+ *
+ * (C) Copyright 2008 Intel Corporation
+ * Author: Jacob Pan (jacob.jun.pan@...el.com)
+ *
+ * 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; version 2
+ * of the License.
+ *
+ * Note:
+ *
+ */
+#include <linux/spi/spi.h>
+#include <linux/sfi.h>
+
+#include <asm/platform_feature.h>
+#include <asm/apb_timer.h>
+#include <asm/setup.h>
+#include <asm/apic.h>
+
+static int __init mrst_pre_intr_init(void)
+{
+#ifdef CONFIG_X86_IO_APIC
+ if (platform_has(X86_PLATFORM_FEATURE_APBT)) {
+ pre_init_apic_IRQ();
+ return 1;
+ }
+#endif
+ return 0;
+}
+
+static struct x86_quirks mrst_x86_quirks = {
+ .arch_pre_intr_init = mrst_pre_intr_init,
+ .setup_secondary_clock = apbt_setup_secondary_clock,
+};
+
+inline void setup_mrst_default_feature(void)
+{
+ clear_all_platform_feature();
+ platform_feature_set_flag(X86_PLATFORM_FEATURE_SFI);
+ platform_feature_set_flag(X86_PLATFORM_FEATURE_IOAPIC);
+ platform_feature_set_flag(X86_PLATFORM_FEATURE_APBT);
+ platform_feature_set_flag(X86_PLATFORM_FEATURE_VRTC);
+}
+
+inline void mrst_early_detect(int subarch)
+{
+ if (subarch == X86_SUBARCH_MRST) {
+ x86_quirks = &mrst_x86_quirks;
+ }
+}
+
+static int __init sfi_parse_spib(struct sfi_table_header *table)
+{
+ struct sfi_table *sb;
+ struct sfi_spi_table_entry *pentry;
+ struct spi_board_info *info;
+ int num, i, j;
+
+ sb = (struct sfi_table *)table;
+ num = SFI_GET_ENTRY_NUM(sb, sfi_spi_table_entry);
+ pentry = (struct sfi_spi_table_entry *) sb->pentry;
+
+ info = kzalloc(num * sizeof(*info), GFP_KERNEL);
+ if (!info) {
+ pr_info("%s(): Error in kzalloc\n", __func__);
+ return -ENOMEM;
+ }
+
+ for (i = 0, j = 0; i < num; i++) {
+ if (pentry->host_num != 0)
+ continue;
+ strncpy(info[j].modalias, pentry->name, 16);
+ info[j].irq = pentry->irq_info;
+ info[j].bus_num = pentry->host_num;
+ info[j].chip_select = pentry->cs;
+ info[j].max_speed_hz = 3125000; /* hard coded */
+
+ printk(KERN_INFO "info[%d]: name = %16s, irq = 0x%x, bus = %d,"
+ " cs = %d\n", j, info[j].modalias, info[j].irq,
+ info[j].bus_num, info[j].chip_select);
+ j++;
+ pentry++;
+ }
+ spi_register_board_info(info, j);
+ kfree(info);
+ return 0;
+
+}
+
+static int __init sfi_parse_i2cb(struct sfi_table_header *table)
+{
+ return 0;
+}
+
+static int __init mrst_platform_init(void)
+{
+ sfi_table_parse(SFI_SIG_SPIB, sfi_parse_spib);
+ sfi_table_parse(SFI_SIG_I2CB, sfi_parse_i2cb);
+ return 0;
+}
+
+postcore_initcall(mrst_platform_init);
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 1a5ef7b..9a7f2a5 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -626,7 +626,7 @@ early_param("elfcorehdr", setup_elfcorehdr);
static struct x86_quirks default_x86_quirks __initdata;
-struct x86_quirks *x86_quirks __initdata = &default_x86_quirks;
+struct x86_quirks *x86_quirks = &default_x86_quirks;
#ifdef CONFIG_X86_RESERVE_LOW_64K
static int __init dmi_low_memory_corruption(const struct dmi_system_id *d)
@@ -681,6 +681,7 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_X86_32
memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
visws_early_detect();
+ mrst_early_detect(boot_params.hdr.hardware_subarch);
#else
printk(KERN_INFO "Command line: %s\n", boot_command_line);
#endif
@@ -732,6 +733,7 @@ void __init setup_arch(char **cmdline_p)
#endif
ARCH_SETUP
+
platform_feature_init_default(boot_params.hdr.hardware_subarch);
setup_memory_map();
parse_setup_data();
--
1.5.6.5
--
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