Subject: [PATCH 23/33] score: create kernel/ files asm-offsets.cinit_task.c setup.c

[Chen Liqin]

>From 2c8dd290bc3ed1082e7cdb6503d13c84025af6d9 Mon Sep 17 00:00:00 2001
From: Chen Liqin <liqin.chen@xxxxxxxxxxxxx>
Date: Wed, 26 Aug 2009 10:05:08 +0800
Subject: [PATCH 23/33] score: create kernel/ files asm-offsets.c init_task.c setup.c


Signed-off-by: Chen Liqin <liqin.chen@xxxxxxxxxxxxx>
---
 arch/score/kernel/asm-offsets.c |  216 +++++++++++++++++++++++++++++++++++++++
 arch/score/kernel/init_task.c   |   47 +++++++++
 arch/score/kernel/setup.c       |  159 ++++++++++++++++++++++++++++
 3 files changed, 422 insertions(+), 0 deletions(-)
 create mode 100644 arch/score/kernel/asm-offsets.c
 create mode 100644 arch/score/kernel/init_task.c
 create mode 100644 arch/score/kernel/setup.c

diff --git a/arch/score/kernel/asm-offsets.c b/arch/score/kernel/asm-offsets.c
new file mode 100644
index 0000000..57788f4
--- /dev/null
+++ b/arch/score/kernel/asm-offsets.c
@@ -0,0 +1,216 @@
+/*
+ * arch/score/kernel/asm-offsets.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@xxxxxxxxxxxxx>
+ *  Lennox Wu <lennox.wu@xxxxxxxxxxxxx>
+ *
+ * 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, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/kbuild.h>
+#include <linux/interrupt.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+
+#include <asm-generic/cmpxchg-local.h>
+
+void output_ptreg_defines(void)
+{
+	COMMENT("SCORE pt_regs offsets.");
+	OFFSET(PT_R0, pt_regs, regs[0]);
+	OFFSET(PT_R1, pt_regs, regs[1]);
+	OFFSET(PT_R2, pt_regs, regs[2]);
+	OFFSET(PT_R3, pt_regs, regs[3]);
+	OFFSET(PT_R4, pt_regs, regs[4]);
+	OFFSET(PT_R5, pt_regs, regs[5]);
+	OFFSET(PT_R6, pt_regs, regs[6]);
+	OFFSET(PT_R7, pt_regs, regs[7]);
+	OFFSET(PT_R8, pt_regs, regs[8]);
+	OFFSET(PT_R9, pt_regs, regs[9]);
+	OFFSET(PT_R10, pt_regs, regs[10]);
+	OFFSET(PT_R11, pt_regs, regs[11]);
+	OFFSET(PT_R12, pt_regs, regs[12]);
+	OFFSET(PT_R13, pt_regs, regs[13]);
+	OFFSET(PT_R14, pt_regs, regs[14]);
+	OFFSET(PT_R15, pt_regs, regs[15]);
+	OFFSET(PT_R16, pt_regs, regs[16]);
+	OFFSET(PT_R17, pt_regs, regs[17]);
+	OFFSET(PT_R18, pt_regs, regs[18]);
+	OFFSET(PT_R19, pt_regs, regs[19]);
+	OFFSET(PT_R20, pt_regs, regs[20]);
+	OFFSET(PT_R21, pt_regs, regs[21]);
+	OFFSET(PT_R22, pt_regs, regs[22]);
+	OFFSET(PT_R23, pt_regs, regs[23]);
+	OFFSET(PT_R24, pt_regs, regs[24]);
+	OFFSET(PT_R25, pt_regs, regs[25]);
+	OFFSET(PT_R26, pt_regs, regs[26]);
+	OFFSET(PT_R27, pt_regs, regs[27]);
+	OFFSET(PT_R28, pt_regs, regs[28]);
+	OFFSET(PT_R29, pt_regs, regs[29]);
+	OFFSET(PT_R30, pt_regs, regs[30]);
+	OFFSET(PT_R31, pt_regs, regs[31]);
+
+	OFFSET(PT_ORIG_R4, pt_regs, orig_r4);
+	OFFSET(PT_ORIG_R7, pt_regs, orig_r7);
+	OFFSET(PT_CEL, pt_regs, cel);
+	OFFSET(PT_CEH, pt_regs, ceh);
+	OFFSET(PT_SR0, pt_regs, sr0);
+	OFFSET(PT_SR1, pt_regs, sr1);
+	OFFSET(PT_SR2, pt_regs, sr2);
+	OFFSET(PT_EPC, pt_regs, cp0_epc);
+	OFFSET(PT_EMA, pt_regs, cp0_ema);
+	OFFSET(PT_PSR, pt_regs, cp0_psr);
+	OFFSET(PT_ECR, pt_regs, cp0_ecr);
+	OFFSET(PT_CONDITION, pt_regs, cp0_condition);
+	OFFSET(PT_IS_SYSCALL, pt_regs, is_syscall);
+
+	DEFINE(PT_SIZE, sizeof(struct pt_regs));
+	BLANK();
+}
+
+void output_task_defines(void)
+{
+	COMMENT("SCORE task_struct offsets.");
+	OFFSET(TASK_STATE, task_struct, state);
+	OFFSET(TASK_THREAD_INFO, task_struct, stack);
+	OFFSET(TASK_FLAGS, task_struct, flags);
+	OFFSET(TASK_MM, task_struct, mm);
+	OFFSET(TASK_PID, task_struct, pid);
+	DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct));
+	BLANK();
+}
+
+void output_thread_info_defines(void)
+{
+	COMMENT("SCORE thread_info offsets.");
+	OFFSET(TI_TASK, thread_info, task);
+	OFFSET(TI_EXEC_DOMAIN, thread_info, exec_domain);
+	OFFSET(TI_FLAGS, thread_info, flags);
+	OFFSET(TI_TP_VALUE, thread_info, tp_value);
+	OFFSET(TI_CPU, thread_info, cpu);
+	OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
+	OFFSET(TI_ADDR_LIMIT, thread_info, addr_limit);
+	OFFSET(TI_RESTART_BLOCK, thread_info, restart_block);
+	OFFSET(TI_REGS, thread_info, regs);
+	DEFINE(KERNEL_STACK_SIZE, THREAD_SIZE);
+	DEFINE(KERNEL_STACK_MASK, THREAD_MASK);
+	BLANK();
+}
+
+void output_thread_defines(void)
+{
+	COMMENT("SCORE specific thread_struct offsets.");
+	OFFSET(THREAD_REG0, task_struct, thread.reg0);
+	OFFSET(THREAD_REG2, task_struct, thread.reg2);
+	OFFSET(THREAD_REG3, task_struct, thread.reg3);
+	OFFSET(THREAD_REG12, task_struct, thread.reg12);
+	OFFSET(THREAD_REG13, task_struct, thread.reg13);
+	OFFSET(THREAD_REG14, task_struct, thread.reg14);
+	OFFSET(THREAD_REG15, task_struct, thread.reg15);
+	OFFSET(THREAD_REG16, task_struct, thread.reg16);
+	OFFSET(THREAD_REG17, task_struct, thread.reg17);
+	OFFSET(THREAD_REG18, task_struct, thread.reg18);
+	OFFSET(THREAD_REG19, task_struct, thread.reg19);
+	OFFSET(THREAD_REG20, task_struct, thread.reg20);
+	OFFSET(THREAD_REG21, task_struct, thread.reg21);
+	OFFSET(THREAD_REG29, task_struct, thread.reg29);
+
+	OFFSET(THREAD_PSR, task_struct, thread.cp0_psr);
+	OFFSET(THREAD_EMA, task_struct, thread.cp0_ema);
+	OFFSET(THREAD_BADUADDR, task_struct, thread.cp0_baduaddr);
+	OFFSET(THREAD_ECODE, task_struct, thread.error_code);
+	OFFSET(THREAD_TRAPNO, task_struct, thread.trap_no);
+	BLANK();
+}
+
+void output_mm_defines(void)
+{
+	COMMENT("Size of struct page");
+	DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page));
+	BLANK();
+	COMMENT("Linux mm_struct offsets.");
+	OFFSET(MM_USERS, mm_struct, mm_users);
+	OFFSET(MM_PGD, mm_struct, pgd);
+	OFFSET(MM_CONTEXT, mm_struct, context);
+	BLANK();
+	DEFINE(_PAGE_SIZE, PAGE_SIZE);
+	DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
+	BLANK();
+	DEFINE(_PGD_T_SIZE, sizeof(pgd_t));
+	DEFINE(_PTE_T_SIZE, sizeof(pte_t));
+	BLANK();
+	DEFINE(_PGD_ORDER, PGD_ORDER);
+	DEFINE(_PTE_ORDER, PTE_ORDER);
+	BLANK();
+	DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
+	BLANK();
+	DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD);
+	DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE);
+	BLANK();
+}
+
+void output_sc_defines(void)
+{
+	COMMENT("Linux sigcontext offsets.");
+	OFFSET(SC_REGS, sigcontext, sc_regs);
+	OFFSET(SC_MDCEH, sigcontext, sc_mdceh);
+	OFFSET(SC_MDCEL, sigcontext, sc_mdcel);
+	OFFSET(SC_PC, sigcontext, sc_pc);
+	OFFSET(SC_PSR, sigcontext, sc_psr);
+	OFFSET(SC_ECR, sigcontext, sc_ecr);
+	OFFSET(SC_EMA, sigcontext, sc_ema);
+	BLANK();
+}
+
+void output_signal_defined(void)
+{
+	COMMENT("Linux signal numbers.");
+	DEFINE(_SIGHUP, SIGHUP);
+	DEFINE(_SIGINT, SIGINT);
+	DEFINE(_SIGQUIT, SIGQUIT);
+	DEFINE(_SIGILL, SIGILL);
+	DEFINE(_SIGTRAP, SIGTRAP);
+	DEFINE(_SIGIOT, SIGIOT);
+	DEFINE(_SIGABRT, SIGABRT);
+	DEFINE(_SIGFPE, SIGFPE);
+	DEFINE(_SIGKILL, SIGKILL);
+	DEFINE(_SIGBUS, SIGBUS);
+	DEFINE(_SIGSEGV, SIGSEGV);
+	DEFINE(_SIGSYS, SIGSYS);
+	DEFINE(_SIGPIPE, SIGPIPE);
+	DEFINE(_SIGALRM, SIGALRM);
+	DEFINE(_SIGTERM, SIGTERM);
+	DEFINE(_SIGUSR1, SIGUSR1);
+	DEFINE(_SIGUSR2, SIGUSR2);
+	DEFINE(_SIGCHLD, SIGCHLD);
+	DEFINE(_SIGPWR, SIGPWR);
+	DEFINE(_SIGWINCH, SIGWINCH);
+	DEFINE(_SIGURG, SIGURG);
+	DEFINE(_SIGIO, SIGIO);
+	DEFINE(_SIGSTOP, SIGSTOP);
+	DEFINE(_SIGTSTP, SIGTSTP);
+	DEFINE(_SIGCONT, SIGCONT);
+	DEFINE(_SIGTTIN, SIGTTIN);
+	DEFINE(_SIGTTOU, SIGTTOU);
+	DEFINE(_SIGVTALRM, SIGVTALRM);
+	DEFINE(_SIGPROF, SIGPROF);
+	DEFINE(_SIGXCPU, SIGXCPU);
+	DEFINE(_SIGXFSZ, SIGXFSZ);
+	BLANK();
+}
diff --git a/arch/score/kernel/init_task.c b/arch/score/kernel/init_task.c
new file mode 100644
index 0000000..54d9552
--- /dev/null
+++ b/arch/score/kernel/init_task.c
@@ -0,0 +1,47 @@
+/*
+ * arch/score/kernel/init_task.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *
+ * 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, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/init_task.h>
+#include <linux/mqueue.h>
+
+static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
+static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
+
+/*
+ * Initial thread structure.
+ *
+ * We need to make sure that this is THREAD_SIZE aligned due to the
+ * way process stacks are handled. This is done by having a special
+ * "init_task" linker map entry..
+ */
+union thread_union init_thread_union
+	__attribute__((__section__(".data.init_task"))) =
+		{ INIT_THREAD_INFO(init_task) };
+
+/*
+ * Initial task structure.
+ *
+ * All other task structs will be allocated on slabs in fork.c
+ */
+struct task_struct init_task = INIT_TASK(init_task);
+EXPORT_SYMBOL(init_task);
diff --git a/arch/score/kernel/setup.c b/arch/score/kernel/setup.c
new file mode 100644
index 0000000..6a2503c
--- /dev/null
+++ b/arch/score/kernel/setup.c
@@ -0,0 +1,159 @@
+/*
+ * arch/score/kernel/setup.c
+ *
+ * Score Processor version.
+ *
+ * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
+ *  Chen Liqin <liqin.chen@xxxxxxxxxxxxx>
+ *  Lennox Wu <lennox.wu@xxxxxxxxxxxxx>
+ *
+ * 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, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/bootmem.h>
+#include <linux/initrd.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/seq_file.h>
+#include <linux/screen_info.h>
+
+#include <asm-generic/sections.h>
+#include <asm/setup.h>
+
+struct screen_info screen_info;
+unsigned long kernelsp;
+
+static char command_line[COMMAND_LINE_SIZE];
+static struct resource code_resource = { .name = "Kernel code",};
+static struct resource data_resource = { .name = "Kernel data",};
+
+static void __init bootmem_init(void)
+{
+	unsigned long start_pfn, bootmap_size;
+	unsigned long size = initrd_end - initrd_start;
+
+	start_pfn = PFN_UP(__pa(&_end));
+
+	min_low_pfn = PFN_UP(MEMORY_START);
+	max_low_pfn = PFN_UP(MEMORY_START + MEMORY_SIZE);
+
+	/* Initialize the boot-time allocator with low memory only. */
+	bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,
+					 min_low_pfn, max_low_pfn);
+	add_active_range(0, min_low_pfn, max_low_pfn);
+
+	free_bootmem(PFN_PHYS(start_pfn),
+		     (max_low_pfn - start_pfn) << PAGE_SHIFT);
+	memory_present(0, start_pfn, max_low_pfn);
+
+	/* Reserve space for the bootmem bitmap. */
+	reserve_bootmem(PFN_PHYS(start_pfn), bootmap_size, BOOTMEM_DEFAULT);
+
+	if (size == 0) {
+		printk(KERN_INFO "Initrd not found or empty");
+		goto disable;
+	}
+
+	if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) {
+		printk(KERN_ERR "Initrd extends beyond end of memory");
+		goto disable;
+	}
+
+	/* Reserve space for the initrd bitmap. */
+	reserve_bootmem(__pa(initrd_start), size, BOOTMEM_DEFAULT);
+	initrd_below_start_ok = 1;
+
+	pr_info("Initial ramdisk at: 0x%lx (%lu bytes)\n",
+		 initrd_start, size);
+	return;
+disable:
+	printk(KERN_CONT " - disabling initrd\n");
+	initrd_start = 0;
+	initrd_end = 0;
+}
+
+static void __init resource_init(void)
+{
+	struct resource *res;
+
+	code_resource.start = __pa(&_text);
+	code_resource.end = __pa(&_etext) - 1;
+	data_resource.start = __pa(&_etext);
+	data_resource.end = __pa(&_edata) - 1;
+
+	res = alloc_bootmem(sizeof(struct resource));
+	res->name = "System RAM";
+	res->start = MEMORY_START;
+	res->end = MEMORY_START + MEMORY_SIZE - 1;
+	res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+	request_resource(&iomem_resource, res);
+
+	request_resource(res, &code_resource);
+	request_resource(res, &data_resource);
+}
+
+void __init setup_arch(char **cmdline_p)
+{
+	randomize_va_space = 0;
+	*cmdline_p = command_line;
+
+	cpu_cache_init();
+	tlb_init();
+	bootmem_init();
+	paging_init();
+	resource_init();
+}
+
+static int show_cpuinfo(struct seq_file *m, void *v)
+{
+	unsigned long n = (unsigned long) v - 1;
+
+	seq_printf(m, "processor\t\t: %ld\n", n);
+	seq_printf(m, "\n");
+
+	return 0;
+}
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+	unsigned long i = *pos;
+
+	return i < 1 ? (void *) (i + 1) : NULL;
+}
+
+static void *c_next(struct seq_file *m, void *v, loff_t *pos)
+{
+	++*pos;
+	return c_start(m, pos);
+}
+
+static void c_stop(struct seq_file *m, void *v)
+{
+}
+
+const struct seq_operations cpuinfo_op = {
+	.start	= c_start,
+	.next	= c_next,
+	.stop	= c_stop,
+	.show	= show_cpuinfo,
+};
+
+static int __init topology_init(void)
+{
+	return 0;
+}
+
+subsys_initcall(topology_init);
-- 
1.6.2



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