kwboot: Marvell Dove UART booting
Tony Dinh
mibodhi at gmail.com
Sun Feb 13 23:45:07 CET 2022
Hi Pali,
Some compile errors, please see below.
On Sun, Feb 13, 2022 at 8:16 AM Pali Rohár <pali at kernel.org> wrote:
>
> On Wednesday 22 December 2021 20:08:56 Tony Dinh wrote:
> > *** Run kwboot
> >
> > # kwboot -t -p -B 115200 /dev/ttyUSB0 -D /localdisk/mtd0.t5335z
> > Patching image boot signature to UART
> > Aligning image header to Xmodem block size
> > Waiting 2s and flushing tty
> > Sending boot image header (512 bytes)...
> > 25 % [.... ]
> > Done
> > Sending boot image data (607664 bytes)...
> > 0 % [......................................................................]
> > 1 % [......................................................................]
> > 2 % [......................................................................]
> > <snip>
> > 95 % [......................................................................]
> > 97 % [......................................................................]
> > 98 % [.......................................................... ]
> > Done
> > Finishing transfer
> > [Type Ctrl-\ + c to quit]
> >
> > *** Hung here! BootROM did not execute the image payload.
> > ***
> > *** The file mtd0.t5335z is a dd dump from the SPI flash mtd0 with
> > *** this command:
> > *** # dd if=/dev/mtd0 of=mtd0.t5335z bs=768k conv=sync
> >
> > <End log>
> >
> >
> > - Pali's observation:
> >
> > It looks like Dove uses kwbimage v0 format with extensions, at
> > least according to Function Spec. See 'Binary Code Extension' and
> > 'Header Extension'. Currently kwboot and kwbimage supports v0 image only
> > with one extension.
>
> I quickly looked at it. Could you try following patch?
>
> diff --git a/tools/kwbimage.h b/tools/kwbimage.h
> index 74e5d87a4fef..15e83ececc76 100644
> --- a/tools/kwbimage.h
> +++ b/tools/kwbimage.h
> @@ -61,14 +64,46 @@ struct ext_hdr_v0_reg {
> uint32_t rdata;
> } __packed;
>
> -#define EXT_HDR_V0_REG_COUNT ((0x1dc - 0x20) / sizeof(struct ext_hdr_v0_reg))
> -
> +/* Structure of the extension header, version 0 (Kirkwood, Dove) */
> struct ext_hdr_v0 {
> - uint32_t offset;
> - uint8_t reserved[0x20 - sizeof(uint32_t)];
> - struct ext_hdr_v0_reg rcfg[EXT_HDR_V0_REG_COUNT];
> - uint8_t reserved2[7];
> - uint8_t checksum;
> + /*
> + * Beware that extension header offsets specified in 88AP510 Functional
> + * Specifications are relative to the start of the main header, not to
> + * the start of the extension header itself.
> + */
> + uint32_t offset; /* 0x0-0x3 */
> + uint8_t rsvd1[8]; /* 0x4-0xB */
> + uint32_t ddrinitdelay; /* 0xC-0xF */
> + uint32_t match_addr; /* 0x10-0x13 */
> + uint32_t match_mask; /* 0x14-0x17 */
> + uint32_t match_value; /* 0x18-0x1B */
> + uint8_t ddrwritetype; /* 0x1C */
> + uint8_t ddrresetmpp; /* 0x1D */
> + uint8_t ddrclkenmpp; /* 0x1E */
> + uint8_t ddrmppdelay; /* 0x1F */
> + struct ext_hdr_v0_reg rcfg[55]; /* 0x20-0x1D7 */
> + uint8_t rsvd2[7]; /* 0x1D8-0x1DE */
> + uint8_t checksum; /* 0x1DF */
> +} __packed;
> +
> +/* Structure of the binary code header, version 0 (Dove) */
> +struct binext_hdr_v0 {
> + uint32_t match_addr; /* 0x00-0x03 */
> + uint32_t match_mask; /* 0x04-0x07 */
> + uint32_t match_value; /* 0x08-0x0B */
> + uint32_t offset; /* 0x0C-0x0F */
> + uint32_t destaddr; /* 0x10-0x13 */
> + uint32_t size; /* 0x14-0x17 */
> + uint32_t execaddr; /* 0x18-0x1B */
> + uint32_t param1; /* 0x1C-0x1F */
> + uint32_t param2; /* 0x20-0x23 */
> + uint32_t param3; /* 0x24-0x27 */
> + uint32_t param4; /* 0x28-0x2B */
> + uint8_t params; /* 0x2C */
> + uint8_t rsvd1; /* 0x2D */
> + uint8_t rsvd2; /* 0x2E */
> + uint8_t checksum; /* 0x2F */
> + uint8_t code[2000]; /* 0x30-0x7FF */
> } __packed;
>
> /* Structure of the main header, version 1 (Armada 370/XP/375/38x/39x) */
> @@ -213,8 +248,20 @@ static inline size_t kwbheader_size(const void *header)
> if (kwbimage_version(header) == 0) {
> const struct main_hdr_v0 *hdr = header;
>
> + /*
> + * First extension header starts immediately after the main
> + * header without any padding. Between extension headers is
> + * 0x20 byte padding. There is no padding after the last
> + * extension header. First binary code header starts immediately
> + * after the last extension header (or immediately after the
> + * main header if there is no extension header) without any
> + * padding. There is no padding between binary code headers and
> + * neither after the last binary code header.
> + */
> return sizeof(*hdr) +
> - hdr->ext ? sizeof(struct ext_hdr_v0) : 0;
> + hdr->ext * sizeof(struct ext_hdr_v0) +
> + ((hdr->ext > 1) ? (hdr->ext * 0x20) : 0) +
> + hdr->binext * sizeof(struct binext_hdr_v0);
> } else {
> const struct main_hdr_v1 *hdr = header;
>
>
>
> It fixes kwbheader_size() function to returns correct size of the image
> header (with all v0 extensions), so it could help kwboot to convert
> image with non-UART sign to UART version and send it over UART.
Applied the patch, and make tools gave this error:
tools/kwbimage.h:255:13: error: ‘const struct main_hdr_v0’ has no
member named ‘binext’
255 | hdr->binext * sizeof(struct binext_hdr_v0);
Thanks,
Tony
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