diff options
Diffstat (limited to 'common/spl/spl_fit.c')
| -rw-r--r-- | common/spl/spl_fit.c | 72 |
1 files changed, 58 insertions, 14 deletions
diff --git a/common/spl/spl_fit.c b/common/spl/spl_fit.c index 79cc06e..fb69f1d 100644 --- a/common/spl/spl_fit.c +++ b/common/spl/spl_fit.c @@ -87,6 +87,42 @@ static int spl_fit_select_fdt(const void *fdt, int images, int *fdt_offsetp) return -ENOENT; } +static int get_aligned_image_offset(struct spl_load_info *info, int offset) +{ + /* + * If it is a FS read, get the first address before offset which is + * aligned to ARCH_DMA_MINALIGN. If it is raw read return the + * block number to which offset belongs. + */ + if (info->filename) + return offset & ~(ARCH_DMA_MINALIGN - 1); + + return offset / info->bl_len; +} + +static int get_aligned_image_overhead(struct spl_load_info *info, int offset) +{ + /* + * If it is a FS read, get the difference between the offset and + * the first address before offset which is aligned to + * ARCH_DMA_MINALIGN. If it is raw read return the offset within the + * block. + */ + if (info->filename) + return offset & (ARCH_DMA_MINALIGN - 1); + + return offset % info->bl_len; +} + +static int get_aligned_image_size(struct spl_load_info *info, int data_size, + int offset) +{ + if (info->filename) + return data_size + get_aligned_image_overhead(info, offset); + + return (data_size + info->bl_len - 1) / info->bl_len; +} + int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fit) { int sectors; @@ -96,7 +132,7 @@ int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fit) void *load_ptr; int fdt_offset, fdt_len; int data_offset, data_size; - int base_offset; + int base_offset, align_len = ARCH_DMA_MINALIGN - 1; int src_sector; void *dst; @@ -124,7 +160,7 @@ int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fit) */ fit = (void *)(CONFIG_SYS_TEXT_BASE - size - info->bl_len); fit = (void *)ALIGN((ulong)fit, 8); - sectors = (size + info->bl_len - 1) / info->bl_len; + sectors = get_aligned_image_size(info, size, 0); count = info->read(info, sector, sectors, fit); debug("fit read sector %lx, sectors=%d, dst=%p, count=%lu\n", sector, sectors, fit, count); @@ -157,19 +193,23 @@ int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fit) * byte will be at 'load'. This may mean we need to load it starting * before then, since we can only read whole blocks. */ - sectors = (data_size + info->bl_len - 1) / info->bl_len; data_offset += base_offset; + sectors = get_aligned_image_size(info, data_size, data_offset); load_ptr = (void *)load; debug("U-Boot size %x, data %p\n", data_size, load_ptr); - dst = load_ptr - (data_offset % info->bl_len); + dst = load_ptr; /* Read the image */ - src_sector = sector + data_offset / info->bl_len; - debug("image: data_offset=%x, dst=%p, src_sector=%x, sectors=%x\n", - data_offset, dst, src_sector, sectors); + src_sector = sector + get_aligned_image_offset(info, data_offset); + debug("Aligned image read: dst=%p, src_sector=%x, sectors=%x\n", + dst, src_sector, sectors); count = info->read(info, src_sector, sectors, dst); if (count != sectors) return -EIO; + debug("image: dst=%p, data_offset=%x, size=%x\n", dst, data_offset, + data_size); + memcpy(dst, dst + get_aligned_image_overhead(info, data_offset), + data_size); /* Figure out which device tree the board wants to use */ fdt_len = spl_fit_select_fdt(fit, images, &fdt_offset); @@ -179,14 +219,15 @@ int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fit) /* * Read the device tree and place it after the image. There may be * some extra data before it since we can only read entire blocks. + * And also align the destination address to ARCH_DMA_MINALIGN. */ - dst = load_ptr + data_size; + dst = (void *)((load + data_size + align_len) & ~align_len); fdt_offset += base_offset; - sectors = (fdt_len + info->bl_len - 1) / info->bl_len; - count = info->read(info, sector + fdt_offset / info->bl_len, sectors, - dst); - debug("fit read %x sectors to %x, dst %p, data_offset %x\n", - sectors, spl_image.load_addr, dst, fdt_offset); + sectors = get_aligned_image_size(info, fdt_len, fdt_offset); + src_sector = sector + get_aligned_image_offset(info, fdt_offset); + count = info->read(info, src_sector, sectors, dst); + debug("Aligned fdt read: dst %p, src_sector = %x, sectors %x\n", + dst, src_sector, sectors); if (count != sectors) return -EIO; @@ -195,7 +236,10 @@ int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fit) * After this we will have the U-Boot image and its device tree ready * for us to start. */ - memcpy(dst, dst + fdt_offset % info->bl_len, fdt_len); + debug("fdt: dst=%p, data_offset=%x, size=%x\n", dst, fdt_offset, + fdt_len); + memcpy(load_ptr + data_size, + dst + get_aligned_image_overhead(info, fdt_offset), fdt_len); return 0; } |