[POWERPC] PS3: Bootwrapper support.

[pandora-kernel.git] / arch / powerpc / boot / ps3.c

diff --git a/arch/powerpc/boot/ps3.c b/arch/powerpc/boot/ps3.c
new file mode 100644 (file)
index 0000000..893d593
--- /dev/null
+++ b/arch/powerpc/boot/ps3.c
@@ -0,0 +1,161 @@
+/*
+ *  PS3 bootwrapper support.
+ *
+ *  Copyright (C) 2007 Sony Computer Entertainment Inc.
+ *  Copyright 2007 Sony Corp.
+ *
+ *  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.
+ *
+ *  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, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "elf.h"
+#include "string.h"
+#include "stdio.h"
+#include "page.h"
+#include "ops.h"
+
+extern s64 lv1_panic(u64 in_1);
+extern s64 lv1_get_logical_partition_id(u64 *out_1);
+extern s64 lv1_get_logical_ppe_id(u64 *out_1);
+extern s64 lv1_get_repository_node_value(u64 in_1, u64 in_2, u64 in_3,
+       u64 in_4, u64 in_5, u64 *out_1, u64 *out_2);
+
+#ifdef DEBUG
+#define DBG(fmt...) printf(fmt)
+#else
+static inline int __attribute__ ((format (printf, 1, 2))) DBG(
+       const char *fmt, ...) {return 0;}
+#endif
+
+BSS_STACK(4096);
+
+/* A buffer that may be edited by tools operating on a zImage binary so as to
+ * edit the command line passed to vmlinux (by setting /chosen/bootargs).
+ * The buffer is put in it's own section so that tools may locate it easier.
+ */
+static char cmdline[COMMAND_LINE_SIZE]
+       __attribute__((__section__("__builtin_cmdline")));
+
+static void prep_cmdline(void *chosen)
+{
+       if (cmdline[0] == '\0')
+               getprop(chosen, "bootargs", cmdline, COMMAND_LINE_SIZE-1);
+       else
+               setprop_str(chosen, "bootargs", cmdline);
+
+       printf("cmdline: '%s'\n", cmdline);
+}
+
+static void ps3_console_write(const char *buf, int len)
+{
+}
+
+static void ps3_exit(void)
+{
+       printf("ps3_exit\n");
+
+       /* lv1_panic will shutdown the lpar. */
+
+       lv1_panic(0); /* zero = do not reboot */
+       while (1);
+}
+
+static int ps3_repository_read_rm_size(u64 *rm_size)
+{
+       s64 result;
+       u64 lpar_id;
+       u64 ppe_id;
+       u64 v2;
+
+       result = lv1_get_logical_partition_id(&lpar_id);
+
+       if (result)
+               return -1;
+
+       result = lv1_get_logical_ppe_id(&ppe_id);
+
+       if (result)
+               return -1;
+
+       /*
+        * n1: 0000000062690000 : ....bi..
+        * n2: 7075000000000000 : pu......
+        * n3: 0000000000000001 : ........
+        * n4: 726d5f73697a6500 : rm_size.
+       */
+
+       result = lv1_get_repository_node_value(lpar_id, 0x0000000062690000ULL,
+               0x7075000000000000ULL, ppe_id, 0x726d5f73697a6500ULL, rm_size,
+               &v2);
+
+       printf("%s:%d: ppe_id  %lu \n", __func__, __LINE__,
+               (unsigned long)ppe_id);
+       printf("%s:%d: lpar_id %lu \n", __func__, __LINE__,
+               (unsigned long)lpar_id);
+       printf("%s:%d: rm_size %llxh \n", __func__, __LINE__, *rm_size);
+
+       return result ? -1 : 0;
+}
+
+void ps3_copy_vectors(void)
+{
+       extern char __system_reset_kernel[];
+
+       memcpy((void *)0x100, __system_reset_kernel, 0x100);
+       flush_cache((void *)0x100, 0x100);
+}
+
+void platform_init(void)
+{
+       extern char _end[];
+       extern char _dtb_start[];
+       extern char _initrd_start[];
+       extern char _initrd_end[];
+       const u32 heapsize = 0x1000000 - (u32)_end; /* 16MiB */
+       void *chosen;
+       unsigned long ft_addr;
+       u64 rm_size;
+
+       console_ops.write = ps3_console_write;
+       platform_ops.exit = ps3_exit;
+
+       printf("\n-- PS3 bootwrapper --\n");
+
+       simple_alloc_init(_end, heapsize, 32, 64);
+       ft_init(_dtb_start, 0, 4);
+
+       chosen = finddevice("/chosen");
+
+       ps3_repository_read_rm_size(&rm_size);
+       dt_fixup_memory(0, rm_size);
+
+       if (_initrd_end > _initrd_start) {
+               setprop_val(chosen, "linux,initrd-start", (u32)(_initrd_start));
+               setprop_val(chosen, "linux,initrd-end", (u32)(_initrd_end));
+       }
+
+       prep_cmdline(chosen);
+
+       ft_addr = dt_ops.finalize();
+
+       ps3_copy_vectors();
+
+       printf(" flat tree at 0x%lx\n\r", ft_addr);
+
+       ((kernel_entry_t)0)(ft_addr, 0, NULL);
+
+       ps3_exit();
+}