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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 4/7] mini-os: Switched initial C entry point to arch_init
From: Karim Raslan <karim.allah.ahmed@xxxxxxxxx>
Signed-off-by: Karim Allah Ahmed <karim.allah.ahmed@xxxxxxxxx>
[talex5@xxxxxxxxx: separated from big ARM commit]
Signed-off-by: Thomas Leonard <talex5@xxxxxxxxx>
---
extras/mini-os/arch/x86/setup.c | 44 ++++++++++++++++++++++++++++++++--------
extras/mini-os/arch/x86/x86_32.S | 2 +-
extras/mini-os/arch/x86/x86_64.S | 2 +-
extras/mini-os/include/x86/os.h | 2 --
extras/mini-os/kernel.c | 39 +++++------------------------------
5 files changed, 43 insertions(+), 46 deletions(-)
diff --git a/extras/mini-os/arch/x86/setup.c b/extras/mini-os/arch/x86/setup.c
index 54046d3..58ede15 100644
--- a/extras/mini-os/arch/x86/setup.c
+++ b/extras/mini-os/arch/x86/setup.c
@@ -28,6 +28,7 @@
#include <mini-os/os.h>
#include <mini-os/lib.h> /* for printk, memcpy */
+#include <xen/xen.h>
/*
* Shared page for communicating with the hypervisor.
@@ -87,14 +88,40 @@ static inline void sse_init(void) {
#define sse_init()
#endif
+
+void start_kernel(void);
+
+/*
+ * INITIAL C ENTRY POINT.
+ */
void
arch_init(start_info_t *si)
{
+ static char hello[] = "Bootstrapping...\n";
+
+ (void)HYPERVISOR_console_io(CONSOLEIO_write, strlen(hello), hello);
+
+ trap_init();
+
+ /* print out some useful information */
+ printk("Xen Minimal OS!\n");
+ printk(" start_info: %p(VA)\n", si);
+ printk(" nr_pages: 0x%lx\n", si->nr_pages);
+ printk(" shared_inf: 0x%08lx(MA)\n", si->shared_info);
+ printk(" pt_base: %p(VA)\n", (void *)si->pt_base);
+ printk("nr_pt_frames: 0x%lx\n", si->nr_pt_frames);
+ printk(" mfn_list: %p(VA)\n", (void *)si->mfn_list);
+ printk(" mod_start: 0x%lx(VA)\n", si->mod_start);
+ printk(" mod_len: %lu\n", si->mod_len);
+ printk(" flags: 0x%x\n", (unsigned int)si->flags);
+ printk(" cmd_line: %s\n",
+ si->cmd_line ? (const char *)si->cmd_line : "NULL");
+
/*Initialize floating point unit */
- fpu_init();
+ fpu_init();
- /* Initialize SSE */
- sse_init();
+ /* Initialize SSE */
+ sse_init();
/* Copy the start_info struct to a globally-accessible area. */
/* WARN: don't do printk before here, it uses information from
@@ -118,12 +145,15 @@ arch_init(start_info_t *si)
(unsigned long)failsafe_callback, 0);
#endif
-
+ start_kernel();
}
void
arch_fini(void)
{
+ /* Reset traps */
+ trap_fini();
+
#ifdef __i386__
HYPERVISOR_set_callbacks(0, 0, 0, 0);
#else
@@ -132,9 +162,7 @@ arch_fini(void)
}
void
-arch_print_info(void)
+arch_do_exit(void)
{
- printk(" stack: %p-%p\n", stack, stack + sizeof(stack));
+ stack_walk();
}
-
-
diff --git a/extras/mini-os/arch/x86/x86_32.S b/extras/mini-os/arch/x86/x86_32.S
index fb3e30a..b9aa392 100644
--- a/extras/mini-os/arch/x86/x86_32.S
+++ b/extras/mini-os/arch/x86/x86_32.S
@@ -20,7 +20,7 @@ _start:
lss stack_start,%esp
andl $(~(__STACK_SIZE-1)), %esp
push %esi
- call start_kernel
+ call arch_init
stack_start:
.long stack+(2*__STACK_SIZE), __KERNEL_SS
diff --git a/extras/mini-os/arch/x86/x86_64.S b/extras/mini-os/arch/x86/x86_64.S
index f022eb3..df3469e 100644
--- a/extras/mini-os/arch/x86/x86_64.S
+++ b/extras/mini-os/arch/x86/x86_64.S
@@ -21,7 +21,7 @@ _start:
movq stack_start(%rip),%rsp
andq $(~(__STACK_SIZE-1)), %rsp
movq %rsi,%rdi
- call start_kernel
+ call arch_init
stack_start:
.quad stack+(2*__STACK_SIZE)
diff --git a/extras/mini-os/include/x86/os.h b/extras/mini-os/include/x86/os.h
index f193865..73b8297 100644
--- a/extras/mini-os/include/x86/os.h
+++ b/extras/mini-os/include/x86/os.h
@@ -64,8 +64,6 @@ extern shared_info_t *HYPERVISOR_shared_info;
void trap_init(void);
void trap_fini(void);
-void arch_init(start_info_t *si);
-void arch_print_info(void);
void arch_fini(void);
diff --git a/extras/mini-os/kernel.c b/extras/mini-os/kernel.c
index 27e3c56..1c1171a 100644
--- a/extras/mini-os/kernel.c
+++ b/extras/mini-os/kernel.c
@@ -114,40 +114,12 @@ __attribute__((weak)) int app_main(start_info_t *si)
return 0;
}
-/*
- * INITIAL C ENTRY POINT.
- */
-void start_kernel(start_info_t *si)
+void start_kernel(void)
{
- static char hello[] = "Bootstrapping...\n";
-
- (void)HYPERVISOR_console_io(CONSOLEIO_write, strlen(hello), hello);
-
- arch_init(si);
-
- trap_init();
-
- /* print out some useful information */
- printk("Xen Minimal OS!\n");
- printk(" start_info: %p(VA)\n", si);
- printk(" nr_pages: 0x%lx\n", si->nr_pages);
- printk(" shared_inf: 0x%08lx(MA)\n", si->shared_info);
- printk(" pt_base: %p(VA)\n", (void *)si->pt_base);
- printk("nr_pt_frames: 0x%lx\n", si->nr_pt_frames);
- printk(" mfn_list: %p(VA)\n", (void *)si->mfn_list);
- printk(" mod_start: 0x%lx(VA)\n", si->mod_start);
- printk(" mod_len: %lu\n", si->mod_len);
- printk(" flags: 0x%x\n", (unsigned int)si->flags);
- printk(" cmd_line: %s\n",
- si->cmd_line ? (const char *)si->cmd_line : "NULL");
-
/* Set up events. */
init_events();
-
- /* ENABLE EVENT DELIVERY. This is disabled at start of day. */
- __sti();
- arch_print_info();
+ __sti();
setup_xen_features();
@@ -201,13 +173,12 @@ void stop_kernel(void)
/* Reset events. */
fini_events();
- /* Reset traps */
- trap_fini();
-
/* Reset arch details */
arch_fini();
}
+void arch_do_exit(void);
+
/*
* do_exit: This is called whenever an IRET fails in entry.S.
* This will generally be because an application has got itself into
@@ -218,7 +189,7 @@ void stop_kernel(void)
void do_exit(void)
{
printk("Do_exit called!\n");
- stack_walk();
+ arch_do_exit();
for( ;; )
{
struct sched_shutdown sched_shutdown = { .reason = SHUTDOWN_crash };
--
2.0.0
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