tools: mksunxiboot: allow larger SPL binaries

[u-boot] / tools / mksunxiboot.c

diff --git a/tools/mksunxiboot.c b/tools/mksunxiboot.c
index 1f0fbae8e17dd4432912d95be4883d2dca273772..111d74a3ee0ad31b53beb042a83bc260ed71d713 100644 (file)
--- a/tools/mksunxiboot.c
+++ b/tools/mksunxiboot.c
@@ -15,23 +15,8 @@
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include "../arch/arm/include/asm/arch-sunxi/spl.h"
 
-/* boot head definition from sun4i boot code */
-struct boot_file_head {
-       uint32_t b_instruction; /* one intruction jumping to real code */
-       uint8_t magic[8];       /* ="eGON.BT0" or "eGON.BT1", not C-style str */
-       uint32_t check_sum;     /* generated by PC */
-       uint32_t length;        /* generated by PC */
-       /*
-        * We use a simplified header, only filling in what is needed
-        * by the boot ROM. To be compatible with Allwinner tools we
-        * would need to implement the proper fields here instead of
-        * padding.
-        */
-       uint8_t pad[12];                /* align to 32 bytes */
-};
-
-#define BOOT0_MAGIC                     "eGON.BT0"
 #define STAMP_VALUE                     0x5F0A6C39
 
 /* check sum functon from sun4i boot code */
@@ -43,19 +28,19 @@ int gen_check_sum(struct boot_file_head *head_p)
        uint32_t i;
        uint32_t sum;
 
-       length = head_p->length;
+       length = le32_to_cpu(head_p->length);
        if ((length & 0x3) != 0)        /* must 4-byte-aligned */
                return -1;
        buf = (uint32_t *)head_p;
-       head_p->check_sum = STAMP_VALUE;        /* fill stamp */
+       head_p->check_sum = cpu_to_le32(STAMP_VALUE);   /* fill stamp */
        loop = length >> 2;
 
        /* calculate the sum */
        for (i = 0, sum = 0; i < loop; i++)
-               sum += buf[i];
+               sum += le32_to_cpu(buf[i]);
 
        /* write back check sum */
-       head_p->check_sum = sum;
+       head_p->check_sum = cpu_to_le32(sum);
 
        return 0;
 }
@@ -63,9 +48,15 @@ int gen_check_sum(struct boot_file_head *head_p)
 #define ALIGN(x, a) __ALIGN_MASK((x), (typeof(x))(a)-1)
 #define __ALIGN_MASK(x, mask) (((x)+(mask))&~(mask))
 
-#define SUN4I_SRAM_SIZE 0x7600 /* 0x7748+ is used by BROM */
-#define SRAM_LOAD_MAX_SIZE (SUN4I_SRAM_SIZE - sizeof(struct boot_file_head))
-#define BLOCK_SIZE 512
+#define SUNXI_SRAM_SIZE 0x8000 /* SoC with smaller size are limited before */
+#define SRAM_LOAD_MAX_SIZE (SUNXI_SRAM_SIZE - sizeof(struct boot_file_head))
+
+/*
+ * BROM (at least on A10 and A20) requires NAND-images to be explicitly aligned
+ * to a multiple of 8K, and rejects the image otherwise. MMC-images are fine
+ * with 512B blocks. To cater for both, align to the largest of the two.
+ */
+#define BLOCK_SIZE 0x2000
 
 struct boot_img {
        struct boot_file_head header;
@@ -93,7 +84,7 @@ int main(int argc, char *argv[])
                return EXIT_FAILURE;
        }
 
-       memset(img.pad, 0, BLOCK_SIZE);
+       memset(&img, 0, sizeof(img));
 
        /* get input file size */
        file_size = lseek(fd_in, 0, SEEK_END);
@@ -125,10 +116,16 @@ int main(int argc, char *argv[])
        memcpy(img.header.magic, BOOT0_MAGIC, 8);       /* no '0' termination */
        img.header.length =
                ALIGN(file_size + sizeof(struct boot_file_head), BLOCK_SIZE);
+       img.header.b_instruction = cpu_to_le32(img.header.b_instruction);
+       img.header.length = cpu_to_le32(img.header.length);
+
+       memcpy(img.header.spl_signature, SPL_SIGNATURE, 3); /* "sunxi" marker */
+       img.header.spl_signature[3] = SPL_HEADER_VERSION;
+
        gen_check_sum(&img.header);
 
-       count = write(fd_out, &img, img.header.length);
-       if (count != img.header.length) {
+       count = write(fd_out, &img, le32_to_cpu(img.header.length));
+       if (count != le32_to_cpu(img.header.length)) {
                perror("Writing output");
                return EXIT_FAILURE;
        }