Changeset 553f64e4f6ef :
http://xenbits.xensource.com/ext/ppc/xen-unstable.hg?cmd=changeset;node=553f64e4f6ef
[POWERPC][XEN] Use multiboot2 data structures when present.
Signed-off-by: Hollis Blanchard <hollisb@xxxxxxxxxx>
diffstat:
7 files changed, 125 insertions(+), 222 deletions(-)
xen/arch/powerpc/Makefile | 1
xen/arch/powerpc/boot_of.c | 180 +++++------------------------------------
xen/arch/powerpc/exceptions.h | 3
xen/arch/powerpc/memory.c | 3
xen/arch/powerpc/oftree.h | 4
xen/arch/powerpc/setup.c | 155 +++++++++++++++++++++--------------
xen/include/asm-powerpc/mm.h | 1
diffs (truncated from 576 to 300 lines):
diff -r a94bf8086002 -r 553f64e4f6ef xen/arch/powerpc/Makefile
--- a/xen/arch/powerpc/Makefile Mon Jul 30 13:50:14 2007 -0500
+++ b/xen/arch/powerpc/Makefile Mon Jul 30 17:10:45 2007 -0500
@@ -27,6 +27,7 @@ obj-y += mm.o
obj-y += mm.o
obj-y += mpic.o
obj-y += mpic_init.o
+obj-y += multiboot2.o
obj-y += numa.o
obj-y += of-devtree.o
obj-y += of-devwalk.o
diff -r a94bf8086002 -r 553f64e4f6ef xen/arch/powerpc/boot_of.c
--- a/xen/arch/powerpc/boot_of.c Mon Jul 30 13:50:14 2007 -0500
+++ b/xen/arch/powerpc/boot_of.c Mon Jul 30 17:10:45 2007 -0500
@@ -22,7 +22,6 @@
#include <xen/config.h>
#include <xen/init.h>
#include <xen/lib.h>
-#include <xen/multiboot.h>
#include <xen/version.h>
#include <xen/spinlock.h>
#include <xen/serial.h>
@@ -30,6 +29,7 @@
#include <xen/sched.h>
#include <asm/page.h>
#include <asm/io.h>
+#include <asm/boot.h>
#include "exceptions.h"
#include "of-devtree.h"
#include "oftree.h"
@@ -54,7 +54,6 @@ static ulong eomem;
#define MEM_AVAILABLE_PAGES ((32 << 20) >> PAGE_SHIFT)
static DECLARE_BITMAP(mem_available_pages, MEM_AVAILABLE_PAGES);
-extern char builtin_cmdline[];
extern struct ns16550_defaults ns16550;
#undef OF_DEBUG
@@ -648,23 +647,6 @@ static ulong boot_of_mem_init(void)
return 0;
}
-static void boot_of_bootargs(multiboot_info_t *mbi)
-{
- int rc;
-
- if (builtin_cmdline[0] == '\0') {
- rc = of_getprop(bof_chosen, "bootargs", builtin_cmdline,
- CONFIG_CMDLINE_SIZE);
- if (rc > CONFIG_CMDLINE_SIZE)
- of_panic("bootargs[] not big enough for /chosen/bootargs\n");
- }
-
- mbi->flags |= MBI_CMDLINE;
- mbi->cmdline = (ulong)builtin_cmdline;
-
- of_printf("bootargs = %s\n", builtin_cmdline);
-}
-
static int save_props(void *m, ofdn_t n, int pkg)
{
int ret;
@@ -933,8 +915,8 @@ static void __init boot_of_fix_maple(voi
}
}
}
-
-static int __init boot_of_serial(void *oft)
+
+void __init boot_of_serial(void *oft)
{
int n;
int p;
@@ -1014,11 +996,9 @@ static int __init boot_of_serial(void *o
__func__, ns16550.irq);
ns16550.irq = 0;
}
-
- return 1;
-}
-
-static int __init boot_of_rtas(module_t *mod, multiboot_info_t *mbi)
+}
+
+static int __init boot_of_rtas(void)
{
int rtas_node;
int rtas_instance;
@@ -1065,14 +1045,13 @@ static int __init boot_of_rtas(module_t
rtas_end = mem + size;
rtas_msr = of_msr;
- mod->mod_start = rtas_base;
- mod->mod_end = rtas_end;
return 1;
}
-static void * __init boot_of_devtree(module_t *mod, multiboot_info_t *mbi)
+void __init *boot_of_devtree(void)
{
void *oft;
+ ulong oft_sz = 48 * PAGE_SIZE;
ulong alloc_sz = 32 << 10; /* 32KiB should be plenty */
ulong sz;
@@ -1100,108 +1079,9 @@ static void * __init boot_of_devtree(mod
ofd_walk(oft, __func__, OFD_ROOT, /* add_hype_props */ NULL, 2);
- mod->mod_start = (ulong)oft;
- mod->mod_end = ALIGN_UP(mod->mod_start + sz, PAGE_SIZE);
-
- if (mod->mod_end -mod->mod_start > alloc_sz)
- of_panic("Could not fit all devtree module in 0x%lx of memory\n",
- alloc_sz);
-
- of_printf("%s: devtree mod @ 0x%016x - 0x%016x\n", __func__,
- mod->mod_start, mod->mod_end);
-
- return oft;
-}
-
-static void * __init boot_of_module(ulong r3, ulong r4, multiboot_info_t *mbi)
-{
- static module_t mods[4];
- ulong mod0_start;
- ulong mod0_size;
- static const char * sepr[] = {" -- ", " || "};
- int sepr_index;
- extern char dom0_start[] __attribute__ ((weak));
- extern char dom0_size[] __attribute__ ((weak));
- const char *p = NULL;
- int mod;
- void *oft;
-
- if ((r3 > 0) && (r4 > 0)) {
- /* was it handed to us in registers ? */
- mod0_start = r3;
- mod0_size = r4;
- of_printf("%s: Dom0 was loaded and found using r3/r4:"
- "0x%lx[size 0x%lx]\n",
- __func__, mod0_start, mod0_size);
- } else {
- /* see if it is in the boot params */
- p = strstr((char *)((ulong)mbi->cmdline), "dom0_start=");
- if ( p != NULL) {
- p += 11;
- mod0_start = simple_strtoul(p, NULL, 0);
-
- p = strstr((char *)((ulong)mbi->cmdline), "dom0_size=");
- p += 10;
- mod0_size = simple_strtoul(p, NULL, 0);
- of_printf("%s: Dom0 was loaded and found using cmdline:"
- "0x%lx[size 0x%lx]\n",
- __func__, mod0_start, mod0_size);
- } else if ( ((ulong)dom0_start != 0) && ((ulong)dom0_size != 0) ) {
- /* was it linked in ? */
-
- mod0_start = (ulong)dom0_start;
- mod0_size = (ulong)dom0_size;
- of_printf("%s: Dom0 is linked in: 0x%lx[size 0x%lx]\n",
- __func__, mod0_start, mod0_size);
- } else {
- mod0_start = (ulong)_end;
- mod0_size = 0;
- of_printf("%s: FYI Dom0 is unknown, will be caught later\n",
- __func__);
- }
- }
-
- if (mod0_size > 0) {
- const char *c = (const char *)mod0_start;
-
- of_printf("mod0: %o %c %c %c\n", c[0], c[1], c[2], c[3]);
- }
-
- mod = 0;
- mods[mod].mod_start = mod0_start;
- mods[mod].mod_end = mod0_start + mod0_size;
-
- of_printf("%s: dom0 mod @ 0x%016x[0x%x]\n", __func__,
- mods[mod].mod_start, mods[mod].mod_end);
-
- /* look for delimiter: "--" or "||" */
- for (sepr_index = 0; sepr_index < ARRAY_SIZE(sepr); sepr_index++){
- p = strstr((char *)(ulong)mbi->cmdline, sepr[sepr_index]);
- if (p != NULL)
- break;
- }
-
- if (p != NULL) {
- /* Xen proper should never know about the dom0 args. */
- *(char *)p = '\0';
- p += strlen(sepr[sepr_index]);
- mods[mod].string = (u32)(ulong)p;
- of_printf("%s: dom0 mod string: %s\n", __func__, p);
- }
-
- ++mod;
- if (boot_of_rtas(&mods[mod], mbi))
- ++mod;
-
- oft = boot_of_devtree(&mods[mod], mbi);
- if (oft == NULL)
- of_panic("%s: boot_of_devtree failed\n", __func__);
-
- ++mod;
-
- mbi->flags |= MBI_MODULES;
- mbi->mods_count = mod;
- mbi->mods_addr = (u32)mods;
+ oftree = (ulong)oft;
+ oftree = (ulong)oft + oft_sz;
+ oftree_len = oft_sz;
return oft;
}
@@ -1327,15 +1207,19 @@ static int __init boot_of_cpus(void)
return 1;
}
-multiboot_info_t __init *boot_of_init(
- ulong r3, ulong r4, ulong vec, ulong r6, ulong r7, ulong orig_msr)
-{
- static multiboot_info_t mbi;
- void *oft;
+void __init boot_of_init(ulong vec, ulong orig_msr)
+{
int r;
of_vec = vec;
of_msr = orig_msr;
+
+ if (is_kernel(vec)) {
+ of_panic("Hmm.. OF[0x%lx] seems to have stepped on our image "
+ "that ranges: %p .. %p.\n",
+ vec, _start, _end);
+ }
+ of_printf("%s: _start %p _end %p\n", __func__, _start, _end);
bof_chosen = of_finddevice("/chosen");
of_getprop(bof_chosen, "stdout", &of_out, sizeof (of_out));
@@ -1346,32 +1230,20 @@ multiboot_info_t __init *boot_of_init(
xen_compile_by(), xen_compile_domain(),
xen_compiler(), xen_compile_date());
- of_printf("%s args: 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx\n"
- "boot msr: 0x%lx\n",
- __func__,
- r3, r4, vec, r6, r7, orig_msr);
-
- if (is_kernel(vec)) {
- of_panic("Hmm.. OF[0x%lx] seems to have stepped on our image "
- "that ranges: %p .. %p.\n",
- vec, _start, _end);
- }
- of_printf("%s: _start %p _end %p 0x%lx\n", __func__, _start, _end, r6);
-
boot_of_fix_maple();
r = boot_of_mem_init();
if (r == 0)
of_panic("failure to initialize memory allocator");
- boot_of_bootargs(&mbi);
- oft = boot_of_module(r3, r4, &mbi);
+
+ boot_of_rtas();
boot_of_cpus();
- boot_of_serial(oft);
-
+}
+
+void __init boot_of_finish(void)
+{
/* end of OF */
of_printf("Quiescing Open Firmware ...\n");
of_call("quiesce", 0, 0, NULL);
-
- return &mbi;
}
/*
diff -r a94bf8086002 -r 553f64e4f6ef xen/arch/powerpc/exceptions.h
--- a/xen/arch/powerpc/exceptions.h Mon Jul 30 13:50:14 2007 -0500
+++ b/xen/arch/powerpc/exceptions.h Mon Jul 30 17:10:45 2007 -0500
@@ -33,9 +33,6 @@ extern void ack_APIC_irq(void);
extern void ack_APIC_irq(void);
extern int ioapic_guest_read(unsigned long physbase, unsigned int reg, u32
*pval);
extern int ioapic_guest_write(unsigned long physbase, unsigned int reg, u32
val);
-extern void __start_xen_ppc(
- ulong r3, ulong r4, ulong r5, ulong r6, ulong r7, ulong orig_msr);
-extern multiboot_info_t *boot_of_init(ulong r3, ulong r4, ulong vec, ulong
r6, ulong r7, ulong orig_msr);
extern void do_timer(struct cpu_user_regs *regs);
extern void do_dec(struct cpu_user_regs *regs);
diff -r a94bf8086002 -r 553f64e4f6ef xen/arch/powerpc/memory.c
--- a/xen/arch/powerpc/memory.c Mon Jul 30 13:50:14 2007 -0500
+++ b/xen/arch/powerpc/memory.c Mon Jul 30 17:10:45 2007 -0500
@@ -21,6 +21,7 @@
#include <xen/sched.h>
#include <xen/mm.h>
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