static char __initdata prom_cmd_line[COMMAND_LINE_SIZE];
-static unsigned long __initdata prom_memory_limit;
-
static unsigned long __initdata alloc_top;
static unsigned long __initdata alloc_top_high;
static unsigned long __initdata alloc_bottom;
static unsigned long __initdata rmo_top;
static unsigned long __initdata ram_top;
-#ifdef CONFIG_KEXEC
-static unsigned long __initdata prom_crashk_base;
-static unsigned long __initdata prom_crashk_size;
-#endif
-
static struct mem_map_entry __initdata mem_reserve_map[MEM_RESERVE_MAP_SIZE];
static int __initdata mem_reserve_cnt;
if ((long)_prom->chosen > 0)
l = prom_getprop(_prom->chosen, "bootargs", p, COMMAND_LINE_SIZE-1);
#ifdef CONFIG_CMDLINE
- if (l == 0) /* dbl check */
+ if (l <= 0 || p[0] == '\0') /* dbl check */
strlcpy(RELOC(prom_cmd_line),
RELOC(CONFIG_CMDLINE), sizeof(prom_cmd_line));
#endif /* CONFIG_CMDLINE */
RELOC(iommu_force_on) = 1;
}
#endif
-
- opt = strstr(RELOC(prom_cmd_line), RELOC("mem="));
- if (opt) {
- opt += 4;
- RELOC(prom_memory_limit) = prom_memparse(opt, (const char **)&opt);
-#ifdef CONFIG_PPC64
- /* Align to 16 MB == size of ppc64 large page */
- RELOC(prom_memory_limit) = ALIGN(RELOC(prom_memory_limit), 0x1000000);
-#endif
- }
-
-#ifdef CONFIG_KEXEC
- /*
- * crashkernel=size@addr specifies the location to reserve for
- * crash kernel.
- */
- opt = strstr(RELOC(prom_cmd_line), RELOC("crashkernel="));
- if (opt) {
- opt += 12;
- RELOC(prom_crashk_size) =
- prom_memparse(opt, (const char **)&opt);
-
- if (ALIGN(RELOC(prom_crashk_size), 0x1000000) !=
- RELOC(prom_crashk_size)) {
- prom_printf("Warning: crashkernel size is not "
- "aligned to 16MB\n");
- }
-
- /*
- * At present, the crash kernel always run at 32MB.
- * Just ignore whatever user passed.
- */
- RELOC(prom_crashk_base) = 0x2000000;
- if (*opt == '@') {
- prom_printf("Warning: PPC64 kdump kernel always runs "
- "at 32 MB\n");
- }
- }
-#endif
}
#ifdef CONFIG_PPC_PSERIES
/*
- * To tell the firmware what our capabilities are, we have to pass
- * it a fake 32-bit ELF header containing a couple of PT_NOTE sections
- * that contain structures that contain the actual values.
+ * There are two methods for telling firmware what our capabilities are.
+ * Newer machines have an "ibm,client-architecture-support" method on the
+ * root node. For older machines, we have to call the "process-elf-header"
+ * method in the /packages/elf-loader node, passing it a fake 32-bit
+ * ELF header containing a couple of PT_NOTE sections that contain
+ * structures that contain various information.
*/
+
+/*
+ * New method - extensible architecture description vector.
+ *
+ * Because the description vector contains a mix of byte and word
+ * values, we declare it as an unsigned char array, and use this
+ * macro to put word values in.
+ */
+#define W(x) ((x) >> 24) & 0xff, ((x) >> 16) & 0xff, \
+ ((x) >> 8) & 0xff, (x) & 0xff
+
+/* Option vector bits - generic bits in byte 1 */
+#define OV_IGNORE 0x80 /* ignore this vector */
+#define OV_CESSATION_POLICY 0x40 /* halt if unsupported option present*/
+
+/* Option vector 1: processor architectures supported */
+#define OV1_PPC_2_00 0x80 /* set if we support PowerPC 2.00 */
+#define OV1_PPC_2_01 0x40 /* set if we support PowerPC 2.01 */
+#define OV1_PPC_2_02 0x20 /* set if we support PowerPC 2.02 */
+#define OV1_PPC_2_03 0x10 /* set if we support PowerPC 2.03 */
+#define OV1_PPC_2_04 0x08 /* set if we support PowerPC 2.04 */
+#define OV1_PPC_2_05 0x04 /* set if we support PowerPC 2.05 */
+
+/* Option vector 2: Open Firmware options supported */
+#define OV2_REAL_MODE 0x20 /* set if we want OF in real mode */
+
+/* Option vector 3: processor options supported */
+#define OV3_FP 0x80 /* floating point */
+#define OV3_VMX 0x40 /* VMX/Altivec */
+
+/* Option vector 5: PAPR/OF options supported */
+#define OV5_LPAR 0x80 /* logical partitioning supported */
+#define OV5_SPLPAR 0x40 /* shared-processor LPAR supported */
+/* ibm,dynamic-reconfiguration-memory property supported */
+#define OV5_DRCONF_MEMORY 0x20
+#define OV5_LARGE_PAGES 0x10 /* large pages supported */
+
+/*
+ * The architecture vector has an array of PVR mask/value pairs,
+ * followed by # option vectors - 1, followed by the option vectors.
+ */
+static unsigned char ibm_architecture_vec[] = {
+ W(0xfffe0000), W(0x003a0000), /* POWER5/POWER5+ */
+ W(0xffff0000), W(0x003e0000), /* POWER6 */
+ W(0xfffffffe), W(0x0f000001), /* all 2.04-compliant and earlier */
+ 5 - 1, /* 5 option vectors */
+
+ /* option vector 1: processor architectures supported */
+ 3 - 1, /* length */
+ 0, /* don't ignore, don't halt */
+ OV1_PPC_2_00 | OV1_PPC_2_01 | OV1_PPC_2_02 | OV1_PPC_2_03 |
+ OV1_PPC_2_04 | OV1_PPC_2_05,
+
+ /* option vector 2: Open Firmware options supported */
+ 34 - 1, /* length */
+ OV2_REAL_MODE,
+ 0, 0,
+ W(0xffffffff), /* real_base */
+ W(0xffffffff), /* real_size */
+ W(0xffffffff), /* virt_base */
+ W(0xffffffff), /* virt_size */
+ W(0xffffffff), /* load_base */
+ W(64), /* 128MB min RMA */
+ W(0xffffffff), /* full client load */
+ 0, /* min RMA percentage of total RAM */
+ 48, /* max log_2(hash table size) */
+
+ /* option vector 3: processor options supported */
+ 3 - 1, /* length */
+ 0, /* don't ignore, don't halt */
+ OV3_FP | OV3_VMX,
+
+ /* option vector 4: IBM PAPR implementation */
+ 2 - 1, /* length */
+ 0, /* don't halt */
+
+ /* option vector 5: PAPR/OF options */
+ 3 - 1, /* length */
+ 0, /* don't ignore, don't halt */
+ OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES,
+};
+
+/* Old method - ELF header with PT_NOTE sections */
static struct fake_elf {
Elf32_Ehdr elfhdr;
Elf32_Phdr phdr[2];
static void __init prom_send_capabilities(void)
{
- ihandle elfloader;
+ ihandle elfloader, root;
+ prom_arg_t ret;
+
+ root = call_prom("open", 1, 1, ADDR("/"));
+ if (root != 0) {
+ /* try calling the ibm,client-architecture-support method */
+ if (call_prom_ret("call-method", 3, 2, &ret,
+ ADDR("ibm,client-architecture-support"),
+ root,
+ ADDR(ibm_architecture_vec)) == 0) {
+ /* the call exists... */
+ if (ret)
+ prom_printf("WARNING: ibm,client-architecture"
+ "-support call FAILED!\n");
+ call_prom("close", 1, 0, root);
+ return;
+ }
+ call_prom("close", 1, 0, root);
+ }
+ /* no ibm,client-architecture-support call, try the old way */
elfloader = call_prom("open", 1, 1, ADDR("/packages/elf-loader"));
if (elfloader == 0) {
prom_printf("couldn't open /packages/elf-loader\n");
RELOC(alloc_bottom) = PAGE_ALIGN(RELOC(prom_initrd_end));
}
- /*
- * If prom_memory_limit is set we reduce the upper limits *except* for
- * alloc_top_high. This must be the real top of RAM so we can put
- * TCE's up there.
- */
-
- RELOC(alloc_top_high) = RELOC(ram_top);
-
- if (RELOC(prom_memory_limit)) {
- if (RELOC(prom_memory_limit) <= RELOC(alloc_bottom)) {
- prom_printf("Ignoring mem=%x <= alloc_bottom.\n",
- RELOC(prom_memory_limit));
- RELOC(prom_memory_limit) = 0;
- } else if (RELOC(prom_memory_limit) >= RELOC(ram_top)) {
- prom_printf("Ignoring mem=%x >= ram_top.\n",
- RELOC(prom_memory_limit));
- RELOC(prom_memory_limit) = 0;
- } else {
- RELOC(ram_top) = RELOC(prom_memory_limit);
- RELOC(rmo_top) = min(RELOC(rmo_top), RELOC(prom_memory_limit));
- }
- }
-
/*
* Setup our top alloc point, that is top of RMO or top of
* segment 0 when running non-LPAR.
RELOC(rmo_top) = RELOC(ram_top);
RELOC(rmo_top) = min(0x30000000ul, RELOC(rmo_top));
RELOC(alloc_top) = RELOC(rmo_top);
+ RELOC(alloc_top_high) = RELOC(ram_top);
prom_printf("memory layout at init:\n");
- prom_printf(" memory_limit : %x (16 MB aligned)\n", RELOC(prom_memory_limit));
prom_printf(" alloc_bottom : %x\n", RELOC(alloc_bottom));
prom_printf(" alloc_top : %x\n", RELOC(alloc_top));
prom_printf(" alloc_top_hi : %x\n", RELOC(alloc_top_high));
prom_printf(" rmo_top : %x\n", RELOC(rmo_top));
prom_printf(" ram_top : %x\n", RELOC(ram_top));
-#ifdef CONFIG_KEXEC
- if (RELOC(prom_crashk_base)) {
- prom_printf(" crashk_base : %x\n", RELOC(prom_crashk_base));
- prom_printf(" crashk_size : %x\n", RELOC(prom_crashk_size));
- }
-#endif
}
reserve_mem(local_alloc_bottom, local_alloc_top - local_alloc_bottom);
- if (RELOC(prom_memory_limit)) {
- /*
- * We align the start to a 16MB boundary so we can map
- * the TCE area using large pages if possible.
- * The end should be the top of RAM so no need to align it.
- */
- RELOC(prom_tce_alloc_start) = _ALIGN_DOWN(local_alloc_bottom,
- 0x1000000);
- RELOC(prom_tce_alloc_end) = local_alloc_top;
- }
+ /* These are only really needed if there is a memory limit in
+ * effect, but we don't know so export them always. */
+ RELOC(prom_tce_alloc_start) = local_alloc_bottom;
+ RELOC(prom_tce_alloc_end) = local_alloc_top;
/* Flag the first invalid entry */
prom_debug("ending prom_initialize_tce_table\n");
if (strstr(p, RELOC("Power Macintosh")) ||
strstr(p, RELOC("MacRISC")))
return PLATFORM_POWERMAC;
+#ifdef CONFIG_PPC64
+ /* We must make sure we don't detect the IBM Cell
+ * blades as pSeries due to some firmware issues,
+ * so we do it here.
+ */
+ if (strstr(p, RELOC("IBM,CBEA")) ||
+ strstr(p, RELOC("IBM,CPBW-1.0")))
+ return PLATFORM_GENERIC;
+#endif /* CONFIG_PPC64 */
i += sl + 1;
}
}
* non-IBM designs !
* - it has /rtas
*/
- len = prom_getprop(_prom->root, "model",
+ len = prom_getprop(_prom->root, "device_type",
compat, sizeof(compat)-1);
if (len <= 0)
return PLATFORM_GENERIC;
- compat[len] = 0;
- if (strcmp(compat, "chrp"))
+ if (strcmp(compat, RELOC("chrp")))
return PLATFORM_GENERIC;
/* Default to pSeries. We need to know if we are running LPAR */
/* Version 16 is not backward compatible */
hdr->last_comp_version = 0x10;
- /* Reserve the whole thing and copy the reserve map in, we
- * also bump mem_reserve_cnt to cause further reservations to
- * fail since it's too late.
- */
- reserve_mem(RELOC(dt_header_start), hdr->totalsize);
+ /* Copy the reserve map in */
memcpy(rsvmap, RELOC(mem_reserve_map), sizeof(mem_reserve_map));
#ifdef DEBUG_PROM
RELOC(mem_reserve_map)[i].size);
}
#endif
+ /* Bump mem_reserve_cnt to cause further reservations to fail
+ * since it's too late.
+ */
RELOC(mem_reserve_cnt) = MEM_RESERVE_MAP_SIZE;
prom_printf("Device tree strings 0x%x -> 0x%x\n",
}
-
-static void __init fixup_device_tree(void)
+#ifdef CONFIG_PPC_MAPLE
+/* PIBS Version 1.05.0000 04/26/2005 has an incorrect /ht/isa/ranges property.
+ * The values are bad, and it doesn't even have the right number of cells. */
+static void __init fixup_device_tree_maple(void)
{
+ phandle isa;
+ u32 isa_ranges[6];
+
+ isa = call_prom("finddevice", 1, 1, ADDR("/ht@0/isa@4"));
+ if (!PHANDLE_VALID(isa))
+ return;
+
+ if (prom_getprop(isa, "ranges", isa_ranges, sizeof(isa_ranges))
+ == PROM_ERROR)
+ return;
+
+ if (isa_ranges[0] != 0x1 ||
+ isa_ranges[1] != 0xf4000000 ||
+ isa_ranges[2] != 0x00010000)
+ return;
+
+ prom_printf("fixing up bogus ISA range on Maple...\n");
+
+ isa_ranges[0] = 0x1;
+ isa_ranges[1] = 0x0;
+ isa_ranges[2] = 0x01002000; /* IO space; PCI device = 4 */
+ isa_ranges[3] = 0x0;
+ isa_ranges[4] = 0x0;
+ isa_ranges[5] = 0x00010000;
+ prom_setprop(isa, "/ht@0/isa@4", "ranges",
+ isa_ranges, sizeof(isa_ranges));
+}
+#else
+#define fixup_device_tree_maple()
+#endif
+
#if defined(CONFIG_PPC64) && defined(CONFIG_PPC_PMAC)
+static void __init fixup_device_tree_pmac(void)
+{
phandle u3, i2c, mpic;
u32 u3_rev;
u32 interrupts[2];
parent = (u32)mpic;
prom_setprop(i2c, "/u3@0,f8000000/i2c@f8001000", "interrupt-parent",
&parent, sizeof(parent));
-#endif
}
+#else
+#define fixup_device_tree_pmac()
+#endif
+static void __init fixup_device_tree(void)
+{
+ fixup_device_tree_maple();
+ fixup_device_tree_pmac();
+}
static void __init prom_find_boot_cpu(void)
{
*/
prom_init_mem();
-#ifdef CONFIG_KEXEC
- if (RELOC(prom_crashk_base))
- reserve_mem(RELOC(prom_crashk_base), RELOC(prom_crashk_size));
-#endif
/*
* Determine which cpu is actually running right _now_
*/
/*
* Fill in some infos for use by the kernel later on
*/
- if (RELOC(prom_memory_limit))
- prom_setprop(_prom->chosen, "/chosen", "linux,memory-limit",
- &RELOC(prom_memory_limit),
- sizeof(prom_memory_limit));
#ifdef CONFIG_PPC64
if (RELOC(ppc64_iommu_off))
prom_setprop(_prom->chosen, "/chosen", "linux,iommu-off",
}
#endif
-#ifdef CONFIG_KEXEC
- if (RELOC(prom_crashk_base)) {
- prom_setprop(_prom->chosen, "/chosen", "linux,crashkernel-base",
- PTRRELOC(&prom_crashk_base),
- sizeof(RELOC(prom_crashk_base)));
- prom_setprop(_prom->chosen, "/chosen", "linux,crashkernel-size",
- PTRRELOC(&prom_crashk_size),
- sizeof(RELOC(prom_crashk_size)));
- }
-#endif
/*
* Fixup any known bugs in the device-tree
*/
projects / deliverable / linux.git / blobdiff