[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/bsp/lk/arch/x86/thread.c b/src/bsp/lk/arch/x86/thread.c
new file mode 100755
index 0000000..94648e0
--- /dev/null
+++ b/src/bsp/lk/arch/x86/thread.c
@@ -0,0 +1,150 @@
+/*
+ * Copyright (c) 2009 Corey Tabaka
+ * Copyright (c) 2014 Travis Geiselbrecht
+ * Copyright (c) 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <sys/types.h>
+#include <string.h>
+#include <stdlib.h>
+#include <debug.h>
+#include <kernel/thread.h>
+#include <kernel/spinlock.h>
+#include <arch/x86.h>
+#include <arch/x86/descriptor.h>
+#include <arch/fpu.h>
+
+/*struct context_switch_frame {
+ uint32_t edi, esi, ebp, esp, ebx, edx, ecx, eax;
+ uint32_t ds, es, fs, gs;
+ uint32_t eip, cs, eflags;
+};*/
+struct context_switch_frame {
+ uint32_t edi, esi, ebp, esp, ebx, edx, ecx, eax;
+ uint32_t eflags;
+ uint32_t eip;
+};
+
+/* we're uniprocessor at this point for x86, so store a global pointer to the current thread */
+struct thread *_current_thread;
+
+extern void x86_context_switch(addr_t *old_sp, addr_t new_sp);
+
+static void initial_thread_func(void) __NO_RETURN;
+static void initial_thread_func(void)
+{
+ int ret;
+
+ /* release the thread lock that was implicitly held across the reschedule */
+ spin_unlock(&thread_lock);
+ arch_enable_ints();
+
+ ret = _current_thread->entry(_current_thread->arg);
+
+// dprintf("initial_thread_func: thread %p exiting with %d\n", _current_thread, ret);
+
+ thread_exit(ret);
+}
+
+void arch_thread_initialize(thread_t *t)
+{
+ // create a default stack frame on the stack
+ vaddr_t stack_top = (vaddr_t)t->stack + t->stack_size;
+
+ // make sure the top of the stack is 8 byte aligned for EABI compliance
+ stack_top = ROUNDDOWN(stack_top, 8);
+
+ struct context_switch_frame *frame = (struct context_switch_frame *)(stack_top);
+ frame--;
+
+ // fill it in
+ memset(frame, 0, sizeof(*frame));
+
+ frame->eip = (vaddr_t) &initial_thread_func;
+ frame->eflags = 0x3002; // IF = 0, NT = 0, IOPL = 3
+ //frame->cs = CODE_SELECTOR;
+ //frame->fs = DATA_SELECTOR;
+ //frame->gs = DATA_SELECTOR;
+ //frame->es = DATA_SELECTOR;
+ //frame->ds = DATA_SELECTOR;
+
+ // set the stack pointer
+ t->arch.esp = (vaddr_t)frame;
+#if X86_WITH_FPU
+ memset(t->arch.fpu_buffer, 0, sizeof(t->arch.fpu_buffer));
+ t->arch.fpu_states = (vaddr_t *)ROUNDUP(((vaddr_t)t->arch.fpu_buffer), 16);
+#endif
+}
+
+void arch_dump_thread(thread_t *t)
+{
+ if (t->state != THREAD_RUNNING) {
+ dprintf(INFO, "\tarch: ");
+ dprintf(INFO, "sp 0x%lx\n", t->arch.esp);
+ }
+}
+
+void arch_context_switch(thread_t *oldthread, thread_t *newthread)
+{
+ //dprintf(DEBUG, "arch_context_switch: old %p (%s), new %p (%s)\n", oldthread, oldthread->name, newthread, newthread->name);
+
+#if X86_WITH_FPU
+ fpu_context_switch(oldthread, newthread);
+#endif
+
+ __asm__ __volatile__ (
+ "pushl $1f \n\t"
+ "pushf \n\t"
+ "pusha \n\t"
+ "movl %%esp,(%%edx) \n\t"
+ "movl %%eax,%%esp \n\t"
+ "popa \n\t"
+ "popf \n\t"
+ "ret \n\t"
+ "1: \n\t"
+
+ :
+ : "d" (&oldthread->arch.esp), "a" (newthread->arch.esp)
+ );
+
+ /*__asm__ __volatile__ (
+ "pushf \n\t"
+ "pushl %%cs \n\t"
+ "pushl $1f \n\t"
+ "pushl %%gs \n\t"
+ "pushl %%fs \n\t"
+ "pushl %%es \n\t"
+ "pushl %%ds \n\t"
+ "pusha \n\t"
+ "movl %%esp,(%%edx) \n\t"
+ "movl %%eax,%%esp \n\t"
+ "popa \n\t"
+ "popl %%ds \n\t"
+ "popl %%es \n\t"
+ "popl %%fs \n\t"
+ "popl %%gs \n\t"
+ "iret \n\t"
+ "1: "
+ :
+ : "d" (&oldthread->arch.esp), "a" (newthread->arch.esp)
+ );*/
+}
+