diff options
Diffstat (limited to 'lib_ppc')
| -rw-r--r-- | lib_ppc/bootm.c | 66 |
1 files changed, 58 insertions, 8 deletions
diff --git a/lib_ppc/bootm.c b/lib_ppc/bootm.c index 10a0b12141..9db1c2e3bf 100644 --- a/lib_ppc/bootm.c +++ b/lib_ppc/bootm.c @@ -51,6 +51,10 @@ static int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base, #include <asm/cache.h> #endif +#ifndef CFG_FDT_PAD +#define CFG_FDT_PAD 0x3000 +#endif + DECLARE_GLOBAL_DATA_PTR; extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); @@ -191,6 +195,44 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[], ft_board_setup(of_flat_tree, gd->bd); #endif } + + /* Fixup the fdt memreserve now that we know how big it is */ + if (of_flat_tree) { + int j; + uint64_t addr, size; + int total = fdt_num_mem_rsv(of_flat_tree); + uint actualsize; + + for (j = 0; j < total; j++) { + fdt_get_mem_rsv(of_flat_tree, j, &addr, &size); + if (addr == (uint64_t)of_flat_tree) { + fdt_del_mem_rsv(of_flat_tree, j); + break; + } + } + + /* Delete the old LMB reservation */ + lmb_free(lmb, of_flat_tree, fdt_totalsize(of_flat_tree)); + + /* Calculate the actual size of the fdt */ + actualsize = fdt_off_dt_strings(of_flat_tree) + + fdt_size_dt_strings(of_flat_tree); + + /* Make it so the fdt ends on a page boundary */ + actualsize = ALIGN(actualsize, 0x1000); + actualsize = actualsize - ((uint)of_flat_tree & 0xfff); + + /* Change the fdt header to reflect the correct size */ + fdt_set_totalsize(of_flat_tree, actualsize); + of_size = actualsize; + + /* Add the new reservation */ + ret = fdt_add_mem_rsv(of_flat_tree, (uint)of_flat_tree, + of_size); + + /* Create a new LMB reservation */ + lmb_reserve(lmb, (ulong)of_flat_tree, of_size); + } #endif /* CONFIG_OF_LIBFDT */ ret = boot_ramdisk_high (lmb, rd_data_start, rd_len, &initrd_start, &initrd_end); @@ -713,22 +755,25 @@ static int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base, #endif /* - * The blob must be within CFG_BOOTMAPSZ, - * so we flag it to be copied if it is not. + * The blob needs to be inside the boot mapping. */ - if (fdt_blob >= (char *)CFG_BOOTMAPSZ) + if (fdt_blob < (char *)bootmap_base) relocate = 1; - of_len = be32_to_cpu (fdt_totalsize (fdt_blob)); + if ((fdt_blob + *of_size + CFG_FDT_PAD) >= + ((char *)CFG_BOOTMAPSZ + bootmap_base)) + relocate = 1; /* move flattend device tree if needed */ if (relocate) { int err; - ulong of_start; + ulong of_start = 0; /* position on a 4K boundary before the alloc_current */ + /* Pad the FDT by a specified amount */ + of_len = *of_size + CFG_FDT_PAD; of_start = (unsigned long)lmb_alloc_base(lmb, of_len, 0x1000, - (CFG_BOOTMAPSZ + bootmap_base)); + (CFG_BOOTMAPSZ + bootmap_base)); if (of_start == 0) { puts("device tree - allocation error\n"); @@ -736,7 +781,7 @@ static int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base, } debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n", - (ulong)fdt_blob, (ulong)fdt_blob + of_len - 1, + (ulong)fdt_blob, (ulong)fdt_blob + *of_size - 1, of_len, of_len); printf (" Loading Device Tree to %08lx, end %08lx ... ", @@ -750,9 +795,14 @@ static int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base, puts ("OK\n"); *of_flat_tree = (char *)of_start; + *of_size = of_len; } else { *of_flat_tree = fdt_blob; - lmb_reserve(lmb, (ulong)working_fdt, of_len); + of_len = (CFG_BOOTMAPSZ + bootmap_base) - (ulong)fdt_blob; + lmb_reserve(lmb, (ulong)fdt_blob, of_len); + fdt_set_totalsize(*of_flat_tree, of_len); + + *of_size = of_len; } return 0; |