kwboot: boot kirkwood SoCs over a serial link
The kwboot program boots boards based on Marvell's Kirkwood platform via Xmodem over their integrated UART. Signed-off-by: Daniel Stodden <daniel.stodden@googlemail.com> Acked-by: Luka Perkov <uboot@lukaperkov.net> Tested-By: Holger Brunck <holger.brunck@keymile.com> Tested-By: David Purdy <david.c.purdy@gmail.com> Tested-by: Simon Guinot <simon.guinot@sequanux.org>
This commit is contained in:
Luka Perkov
Albert ARIBAUD
parent
24934fea0c
commit
d131ad68c6
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@ -0,0 +1,84 @@
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.TH KWBOOT 1 "2012-05-19"
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.SH NAME
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kwboot \- Boot Marvell Kirkwood SoCs over a serial link.
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.SH SYNOPSIS
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.B kwboot
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.RB [ "-b \fIimage\fP" ]
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.RB [ "-p" ]
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.RB [ "-t" ]
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.RB [ "-B \fIbaudrate\fP" ]
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.RB \fITTY\fP
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.SH "DESCRIPTION"
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The \fBmkimage\fP program boots boards based on Marvell's Kirkwood
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platform over their integrated UART. Boot image files will typically
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contain a second stage boot loader, such as U-Boot. The image file
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must conform to Marvell's BootROM firmware image format
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(\fIkwbimage\fP), created using a tool such as \fBmkimage\fP.
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Following power-up or a system reset, system BootROM code polls the
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UART for a brief period of time, sensing a handshake message which
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initiates an image upload. This program sends this boot message until
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it receives a positive acknowledgement. The image is transfered using
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Xmodem.
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Additionally, this program implements a minimal terminal mode, which
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can be used either standalone, or entered immediately following boot
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image transfer completion. This is often useful to catch early boot
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messages, or to manually interrupt a default boot procedure performed
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by the second-stage loader.
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.SH "OPTIONS"
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.TP
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.BI "\-b \fIimage\fP"
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Handshake; then upload file \fIimage\fP over \fITTY\fP.
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Note that for the encapsulated boot code to be executed, \fIimage\fP
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must be of type "UART boot" (0x69). Boot images of different types,
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such as backup images of vendor firmware downloaded from flash memory
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(type 0x8B), will not work (or not as expected). See \fB-p\fP for a
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workaround.
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This mode writes handshake status and upload progress indication to
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stdout.
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.TP
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.BI "\-p"
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In combination with \fB-b\fP, patches the header in \fIimage\fP prior
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to upload, to "UART boot" type.
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This option attempts on-the-fly conversion of some none-UART image
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types, such as images which were originally formatted to be stored in
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flash memory.
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Conversion is performed in memory. The contents of \fIimage\fP will
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not be altered.
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.TP
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.BI "\-t"
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Run a terminal program, connecting standard input and output to
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.RB \fITTY\fP.
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If used in combination with \fB-b\fP, terminal mode is entered
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immediately following a successful image upload.
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If standard I/O streams connect to a console, this mode will terminate
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after receiving 'ctrl-\\' followed by 'c' from console input.
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.TP
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.BI "\-B \fIbaudrate\fP"
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Adjust the baud rate on \fITTY\fP. Default rate is 115200.
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.SH "SEE ALSO"
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.PP
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\fBmkimage\fP(1)
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.SH "AUTHORS"
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Daniel Stodden <daniel.stodden@gmail.com>
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.br
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Luka Perkov <uboot@lukaperkov.net>
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.br
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David Purdy <david.c.purdy@gmail.com>
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@ -72,6 +72,7 @@ BIN_FILES-$(CONFIG_SMDK5250) += mksmdk5250spl$(SFX)
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BIN_FILES-$(CONFIG_MX28) += mxsboot$(SFX)
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BIN_FILES-$(CONFIG_NETCONSOLE) += ncb$(SFX)
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BIN_FILES-$(CONFIG_SHA1_CHECK_UB_IMG) += ubsha1$(SFX)
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BIN_FILES-$(CONFIG_KIRKWOOD) += kwboot$(SFX)
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# Source files which exist outside the tools directory
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EXT_OBJ_FILES-$(CONFIG_BUILD_ENVCRC) += common/env_embedded.o
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@ -101,6 +102,7 @@ OBJ_FILES-$(CONFIG_NETCONSOLE) += ncb.o
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NOPED_OBJ_FILES-y += os_support.o
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OBJ_FILES-$(CONFIG_SHA1_CHECK_UB_IMG) += ubsha1.o
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NOPED_OBJ_FILES-y += ublimage.o
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OBJ_FILES-$(CONFIG_KIRKWOOD) += kwboot.o
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# Don't build by default
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#ifeq ($(ARCH),ppc)
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@ -234,6 +236,10 @@ $(obj)ncb$(SFX): $(obj)ncb.o
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$(obj)ubsha1$(SFX): $(obj)os_support.o $(obj)sha1.o $(obj)ubsha1.o
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$(HOSTCC) $(HOSTCFLAGS) $(HOSTLDFLAGS) -o $@ $^
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$(obj)kwboot$(SFX): $(obj)kwboot.o
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$(HOSTCC) $(HOSTCFLAGS) $(HOSTLDFLAGS) -o $@ $^
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$(HOSTSTRIP) $@
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# Some of the tool objects need to be accessed from outside the tools directory
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$(obj)%.o: $(SRCTREE)/common/%.c
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$(HOSTCC) -g $(HOSTCFLAGS_NOPED) -c -o $@ $<
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@ -0,0 +1,742 @@
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/*
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* Boot a Marvell Kirkwood SoC, with Xmodem over UART0.
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*
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* (c) 2012 Daniel Stodden <daniel.stodden@gmail.com>
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*
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* References: marvell.com, "88F6180, 88F6190, 88F6192, and 88F6281
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* Integrated Controller: Functional Specifications" December 2,
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* 2008. Chapter 24.2 "BootROM Firmware".
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <libgen.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <termios.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include "kwbimage.h"
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#ifdef __GNUC__
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#define PACKED __attribute((packed))
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#else
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#define PACKED
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#endif
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/*
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* Marvell BootROM UART Sensing
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*/
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static unsigned char kwboot_msg_boot[] = {
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0xBB, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
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};
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#define KWBOOT_MSG_REQ_DELAY 10 /* ms */
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#define KWBOOT_MSG_RSP_TIMEO 50 /* ms */
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/*
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* Xmodem Transfers
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*/
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#define SOH 1 /* sender start of block header */
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#define EOT 4 /* sender end of block transfer */
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#define ACK 6 /* target block ack */
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#define NAK 21 /* target block negative ack */
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#define CAN 24 /* target/sender transfer cancellation */
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struct kwboot_block {
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uint8_t soh;
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uint8_t pnum;
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uint8_t _pnum;
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uint8_t data[128];
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uint8_t csum;
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} PACKED;
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#define KWBOOT_BLK_RSP_TIMEO 1000 /* ms */
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static int kwboot_verbose;
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static void
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kwboot_printv(const char *fmt, ...)
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{
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va_list ap;
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if (kwboot_verbose) {
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va_start(ap, fmt);
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vprintf(fmt, ap);
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va_end(ap);
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fflush(stdout);
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}
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}
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static void
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__spinner(void)
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{
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const char seq[] = { '-', '\\', '|', '/' };
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const int div = 8;
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static int state, bs;
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if (state % div == 0) {
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fputc(bs, stdout);
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fputc(seq[state / div % sizeof(seq)], stdout);
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fflush(stdout);
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}
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bs = '\b';
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state++;
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}
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static void
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kwboot_spinner(void)
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{
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if (kwboot_verbose)
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__spinner();
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}
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static void
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__progress(int pct, char c)
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{
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const int width = 70;
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static const char *nl = "";
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static int pos;
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if (pos % width == 0)
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printf("%s%3d %% [", nl, pct);
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fputc(c, stdout);
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nl = "]\n";
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pos++;
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if (pct == 100) {
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while (pos++ < width)
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fputc(' ', stdout);
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fputs(nl, stdout);
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}
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fflush(stdout);
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}
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static void
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kwboot_progress(int _pct, char c)
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{
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static int pct;
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if (_pct != -1)
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pct = _pct;
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if (kwboot_verbose)
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__progress(pct, c);
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}
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static int
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kwboot_tty_recv(int fd, void *buf, size_t len, int timeo)
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{
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int rc, nfds;
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fd_set rfds;
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struct timeval tv;
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ssize_t n;
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rc = -1;
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FD_ZERO(&rfds);
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FD_SET(fd, &rfds);
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tv.tv_sec = 0;
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tv.tv_usec = timeo * 1000;
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if (tv.tv_usec > 1000000) {
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tv.tv_sec += tv.tv_usec / 1000000;
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tv.tv_usec %= 1000000;
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}
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do {
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nfds = select(fd + 1, &rfds, NULL, NULL, &tv);
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if (nfds < 0)
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goto out;
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if (!nfds) {
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errno = ETIMEDOUT;
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goto out;
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}
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n = read(fd, buf, len);
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if (n < 0)
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goto out;
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buf = (char *)buf + n;
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len -= n;
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} while (len > 0);
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rc = 0;
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out:
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return rc;
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}
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static int
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kwboot_tty_send(int fd, const void *buf, size_t len)
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{
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int rc;
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ssize_t n;
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rc = -1;
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do {
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n = write(fd, buf, len);
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if (n < 0)
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goto out;
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buf = (char *)buf + n;
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len -= n;
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} while (len > 0);
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rc = tcdrain(fd);
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out:
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return rc;
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}
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static int
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kwboot_tty_send_char(int fd, unsigned char c)
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{
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return kwboot_tty_send(fd, &c, 1);
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}
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static speed_t
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kwboot_tty_speed(int baudrate)
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{
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switch (baudrate) {
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case 115200:
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return B115200;
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case 57600:
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return B57600;
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case 38400:
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return B38400;
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case 19200:
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return B19200;
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case 9600:
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return B9600;
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}
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return -1;
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}
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static int
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kwboot_open_tty(const char *path, speed_t speed)
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{
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int rc, fd;
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struct termios tio;
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rc = -1;
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fd = open(path, O_RDWR|O_NOCTTY|O_NDELAY);
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if (fd < 0)
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goto out;
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memset(&tio, 0, sizeof(tio));
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tio.c_iflag = 0;
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tio.c_cflag = CREAD|CLOCAL|CS8;
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tio.c_cc[VMIN] = 1;
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tio.c_cc[VTIME] = 10;
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cfsetospeed(&tio, speed);
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cfsetispeed(&tio, speed);
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rc = tcsetattr(fd, TCSANOW, &tio);
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if (rc)
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goto out;
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rc = fd;
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out:
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if (rc < 0) {
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if (fd >= 0)
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close(fd);
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}
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return rc;
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}
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static int
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kwboot_bootmsg(int tty, void *msg)
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{
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int rc;
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char c;
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kwboot_printv("Sending boot message. Please reboot the target...");
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do {
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rc = tcflush(tty, TCIOFLUSH);
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if (rc)
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break;
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rc = kwboot_tty_send(tty, msg, 8);
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if (rc) {
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usleep(KWBOOT_MSG_REQ_DELAY * 1000);
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continue;
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}
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rc = kwboot_tty_recv(tty, &c, 1, KWBOOT_MSG_RSP_TIMEO);
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kwboot_spinner();
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} while (rc || c != NAK);
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kwboot_printv("\n");
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return rc;
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}
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static int
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kwboot_xm_makeblock(struct kwboot_block *block, const void *data,
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size_t size, int pnum)
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{
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const size_t blksz = sizeof(block->data);
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size_t n;
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int i;
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block->pnum = pnum;
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block->_pnum = ~block->pnum;
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n = size < blksz ? size : blksz;
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memcpy(&block->data[0], data, n);
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memset(&block->data[n], 0, blksz - n);
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block->csum = 0;
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for (i = 0; i < n; i++)
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block->csum += block->data[i];
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return n;
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}
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static int
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kwboot_xm_sendblock(int fd, struct kwboot_block *block)
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{
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int rc, retries;
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char c;
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retries = 16;
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do {
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rc = kwboot_tty_send(fd, block, sizeof(*block));
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if (rc)
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break;
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rc = kwboot_tty_recv(fd, &c, 1, KWBOOT_BLK_RSP_TIMEO);
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if (rc)
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break;
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if (c != ACK)
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kwboot_progress(-1, '+');
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} while (c == NAK && retries-- > 0);
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rc = -1;
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switch (c) {
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case ACK:
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rc = 0;
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break;
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case NAK:
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errno = EBADMSG;
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break;
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case CAN:
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errno = ECANCELED;
|
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break;
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default:
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errno = EPROTO;
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break;
|
||||
}
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return rc;
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}
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static int
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kwboot_xmodem(int tty, const void *_data, size_t size)
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{
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const uint8_t *data = _data;
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int rc, pnum, N, err;
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pnum = 1;
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N = 0;
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kwboot_printv("Sending boot image...\n");
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do {
|
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struct kwboot_block block;
|
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int n;
|
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n = kwboot_xm_makeblock(&block,
|
||||
data + N, size - N,
|
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pnum++);
|
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if (n < 0)
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goto can;
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if (!n)
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break;
|
||||
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||||
rc = kwboot_xm_sendblock(tty, &block);
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if (rc)
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goto out;
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N += n;
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kwboot_progress(N * 100 / size, '.');
|
||||
} while (1);
|
||||
|
||||
rc = kwboot_tty_send_char(tty, EOT);
|
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||||
out:
|
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return rc;
|
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|
||||
can:
|
||||
err = errno;
|
||||
kwboot_tty_send_char(tty, CAN);
|
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errno = err;
|
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goto out;
|
||||
}
|
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|
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static int
|
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kwboot_term_pipe(int in, int out, char *quit, int *s)
|
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{
|
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ssize_t nin, nout;
|
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char _buf[128], *buf = _buf;
|
||||
|
||||
nin = read(in, buf, sizeof(buf));
|
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if (nin < 0)
|
||||
return -1;
|
||||
|
||||
if (quit) {
|
||||
int i;
|
||||
|
||||
for (i = 0; i < nin; i++) {
|
||||
if (*buf == quit[*s]) {
|
||||
(*s)++;
|
||||
if (!quit[*s])
|
||||
return 0;
|
||||
buf++;
|
||||
nin--;
|
||||
} else
|
||||
while (*s > 0) {
|
||||
nout = write(out, quit, *s);
|
||||
if (nout <= 0)
|
||||
return -1;
|
||||
(*s) -= nout;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
while (nin > 0) {
|
||||
nout = write(out, buf, nin);
|
||||
if (nout <= 0)
|
||||
return -1;
|
||||
nin -= nout;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
kwboot_terminal(int tty)
|
||||
{
|
||||
int rc, in, s;
|
||||
char *quit = "\34c";
|
||||
struct termios otio, tio;
|
||||
|
||||
rc = -1;
|
||||
|
||||
in = STDIN_FILENO;
|
||||
if (isatty(in)) {
|
||||
rc = tcgetattr(in, &otio);
|
||||
if (!rc) {
|
||||
tio = otio;
|
||||
cfmakeraw(&tio);
|
||||
rc = tcsetattr(in, TCSANOW, &tio);
|
||||
}
|
||||
if (rc) {
|
||||
perror("tcsetattr");
|
||||
goto out;
|
||||
}
|
||||
|
||||
kwboot_printv("[Type Ctrl-%c + %c to quit]\r\n",
|
||||
quit[0]|0100, quit[1]);
|
||||
} else
|
||||
in = -1;
|
||||
|
||||
rc = 0;
|
||||
s = 0;
|
||||
|
||||
do {
|
||||
fd_set rfds;
|
||||
int nfds = 0;
|
||||
|
||||
FD_SET(tty, &rfds);
|
||||
nfds = nfds < tty ? tty : nfds;
|
||||
|
||||
if (in >= 0) {
|
||||
FD_SET(in, &rfds);
|
||||
nfds = nfds < in ? in : nfds;
|
||||
}
|
||||
|
||||
nfds = select(nfds + 1, &rfds, NULL, NULL, NULL);
|
||||
if (nfds < 0)
|
||||
break;
|
||||
|
||||
if (FD_ISSET(tty, &rfds)) {
|
||||
rc = kwboot_term_pipe(tty, STDOUT_FILENO, NULL, NULL);
|
||||
if (rc)
|
||||
break;
|
||||
}
|
||||
|
||||
if (FD_ISSET(in, &rfds)) {
|
||||
rc = kwboot_term_pipe(in, tty, quit, &s);
|
||||
if (rc)
|
||||
break;
|
||||
}
|
||||
} while (quit[s] != 0);
|
||||
|
||||
tcsetattr(in, TCSANOW, &otio);
|
||||
out:
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void *
|
||||
kwboot_mmap_image(const char *path, size_t *size, int prot)
|
||||
{
|
||||
int rc, fd, flags;
|
||||
struct stat st;
|
||||
void *img;
|
||||
|
||||
rc = -1;
|
||||
fd = -1;
|
||||
img = NULL;
|
||||
|
||||
fd = open(path, O_RDONLY);
|
||||
if (fd < 0)
|
||||
goto out;
|
||||
|
||||
rc = fstat(fd, &st);
|
||||
if (rc)
|
||||
goto out;
|
||||
|
||||
flags = (prot & PROT_WRITE) ? MAP_PRIVATE : MAP_SHARED;
|
||||
|
||||
img = mmap(NULL, st.st_size, prot, flags, fd, 0);
|
||||
if (img == MAP_FAILED) {
|
||||
img = NULL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
rc = 0;
|
||||
*size = st.st_size;
|
||||
out:
|
||||
if (rc && img) {
|
||||
munmap(img, st.st_size);
|
||||
img = NULL;
|
||||
}
|
||||
if (fd >= 0)
|
||||
close(fd);
|
||||
|
||||
return img;
|
||||
}
|
||||
|
||||
static uint8_t
|
||||
kwboot_img_csum8(void *_data, size_t size)
|
||||
{
|
||||
uint8_t *data = _data, csum;
|
||||
|
||||
for (csum = 0; size-- > 0; data++)
|
||||
csum += *data;
|
||||
|
||||
return csum;
|
||||
}
|
||||
|
||||
static int
|
||||
kwboot_img_patch_hdr(void *img, size_t size)
|
||||
{
|
||||
int rc;
|
||||
bhr_t *hdr;
|
||||
uint8_t csum;
|
||||
const size_t hdrsz = sizeof(*hdr);
|
||||
|
||||
rc = -1;
|
||||
hdr = img;
|
||||
|
||||
if (size < hdrsz) {
|
||||
errno = EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
csum = kwboot_img_csum8(hdr, hdrsz) - hdr->checkSum;
|
||||
if (csum != hdr->checkSum) {
|
||||
errno = EINVAL;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (hdr->blockid == IBR_HDR_UART_ID) {
|
||||
rc = 0;
|
||||
goto out;
|
||||
}
|
||||
|
||||
hdr->blockid = IBR_HDR_UART_ID;
|
||||
|
||||
hdr->nandeccmode = IBR_HDR_ECC_DISABLED;
|
||||
hdr->nandpagesize = 0;
|
||||
|
||||
hdr->srcaddr = hdr->ext
|
||||
? sizeof(struct kwb_header)
|
||||
: sizeof(*hdr);
|
||||
|
||||
hdr->checkSum = kwboot_img_csum8(hdr, hdrsz) - csum;
|
||||
|
||||
rc = 0;
|
||||
out:
|
||||
return rc;
|
||||
}
|
||||
|
||||
static void
|
||||
kwboot_usage(FILE *stream, char *progname)
|
||||
{
|
||||
fprintf(stream,
|
||||
"Usage: %s -b <image> [ -p ] [ -t ] "
|
||||
"[-B <baud> ] <TTY>\n", progname);
|
||||
fprintf(stream, "\n");
|
||||
fprintf(stream, " -b <image>: boot <image>\n");
|
||||
fprintf(stream, " -p: patch <image> to type 0x69 (uart boot)\n");
|
||||
fprintf(stream, "\n");
|
||||
fprintf(stream, " -t: mini terminal\n");
|
||||
fprintf(stream, "\n");
|
||||
fprintf(stream, " -B <baud>: set baud rate\n");
|
||||
fprintf(stream, "\n");
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char **argv)
|
||||
{
|
||||
const char *ttypath, *imgpath;
|
||||
int rv, rc, tty, term, prot, patch;
|
||||
void *bootmsg;
|
||||
void *img;
|
||||
size_t size;
|
||||
speed_t speed;
|
||||
|
||||
rv = 1;
|
||||
tty = -1;
|
||||
bootmsg = NULL;
|
||||
imgpath = NULL;
|
||||
img = NULL;
|
||||
term = 0;
|
||||
patch = 0;
|
||||
size = 0;
|
||||
speed = B115200;
|
||||
|
||||
kwboot_verbose = isatty(STDOUT_FILENO);
|
||||
|
||||
do {
|
||||
int c = getopt(argc, argv, "hb:ptB:");
|
||||
if (c < 0)
|
||||
break;
|
||||
|
||||
switch (c) {
|
||||
case 'b':
|
||||
bootmsg = kwboot_msg_boot;
|
||||
imgpath = optarg;
|
||||
break;
|
||||
|
||||
case 'p':
|
||||
patch = 1;
|
||||
break;
|
||||
|
||||
case 't':
|
||||
term = 1;
|
||||
break;
|
||||
|
||||
case 'B':
|
||||
speed = kwboot_tty_speed(atoi(optarg));
|
||||
if (speed == -1)
|
||||
goto usage;
|
||||
break;
|
||||
|
||||
case 'h':
|
||||
rv = 0;
|
||||
default:
|
||||
goto usage;
|
||||
}
|
||||
} while (1);
|
||||
|
||||
if (!bootmsg && !term)
|
||||
goto usage;
|
||||
|
||||
if (patch && !imgpath)
|
||||
goto usage;
|
||||
|
||||
if (argc - optind < 1)
|
||||
goto usage;
|
||||
|
||||
ttypath = argv[optind++];
|
||||
|
||||
tty = kwboot_open_tty(ttypath, speed);
|
||||
if (tty < 0) {
|
||||
perror(ttypath);
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (imgpath) {
|
||||
prot = PROT_READ | (patch ? PROT_WRITE : 0);
|
||||
|
||||
img = kwboot_mmap_image(imgpath, &size, prot);
|
||||
if (!img) {
|
||||
perror(imgpath);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
if (patch) {
|
||||
rc = kwboot_img_patch_hdr(img, size);
|
||||
if (rc) {
|
||||
fprintf(stderr, "%s: Invalid image.\n", imgpath);
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
if (bootmsg) {
|
||||
rc = kwboot_bootmsg(tty, bootmsg);
|
||||
if (rc) {
|
||||
perror("bootmsg");
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
if (img) {
|
||||
rc = kwboot_xmodem(tty, img, size);
|
||||
if (rc) {
|
||||
perror("xmodem");
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
if (term) {
|
||||
rc = kwboot_terminal(tty);
|
||||
if (rc && !(errno == EINTR)) {
|
||||
perror("terminal");
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
rv = 0;
|
||||
out:
|
||||
if (tty >= 0)
|
||||
close(tty);
|
||||
|
||||
if (img)
|
||||
munmap(img, size);
|
||||
|
||||
return rv;
|
||||
|
||||
usage:
|
||||
kwboot_usage(rv ? stderr : stdout, basename(argv[0]));
|
||||
goto out;
|
||||
}
|
||||
Loading…
Reference in New Issue