descriptions and files regarding u-boot stuff
This commit is contained in:
Christian Zimmermann
parent
4872b79979
commit
2d8474f6af
4 changed files with 386 additions and 2 deletions
18
README.md
18
README.md
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@ -14,18 +14,27 @@ The sd card contains the following:
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## u-boot:
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...!!!
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clone u-boot repository and compile:
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```bash
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cp -f u-boot/mt7623n_bpir2_defconfig ${u-boot-dir}/configs
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cd ${u-boot-dir}
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make CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf- ARCH=arm mt7623n_bpir2_defconfig
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make CROSS_COMPILE=/usr/bin/arm-linux-gnueabihf- ARCH=arm
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dd if=${u-boot-dir}/u-boot.bin of=/dev/${sdcard} bs=1k seek=320
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```
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maybe you have to patch `${u-boot-dir}/scripts/dtc/dtc-lexer.l`; simply replace by `u-boot/dtc-lexer.l`.
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## boot-partition:
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Contains:
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```bash
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/boot.img
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/zImage
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/dts/mt7623n-bananapi-bpi-r2.dtb
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```
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and further images (eg diifferent kernel versions etc...)
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and further images (eg different kernel versions etc...)
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### how to create these files:
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(because they are not available anywhere, at least not for the most recent kernel. The most recent version provided by some debain derivates is 4.4 or 4.14... too old for my taste!)
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@ -47,6 +56,11 @@ umount boot.setup
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rmdir boot.setup
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```
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`/boot.img` is created by mkimage from `u-boot/boot.cmd`:
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```bash
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mkimage -A arm -T script -C none -n "Load Kernel" -d u-boot/boot.cmd boot.img
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```
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## root-partition:
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If you did no mistake so far (...) this should be the easiest part:
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4
u-boot/boot.cmd
Normal file
4
u-boot/boot.cmd
Normal file
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@ -0,0 +1,4 @@
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setenv bootargs console=ttyS2,115200 earlyprintk root=/dev/mmcblk1p2 rootfstype=ext4 panic=10
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fatload mmc 1 0x84000000 zImage
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fatload mmc 1 0x86000000 dts/mt7623n-bananapi-bpi-r2.dtb
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bootz 0x84000000 - 0x86000000
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306
u-boot/dtc-lexer.l
Normal file
306
u-boot/dtc-lexer.l
Normal file
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@ -0,0 +1,306 @@
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/*
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* (C) Copyright David Gibson <dwg@au1.ibm.com>, IBM Corporation. 2005.
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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%option noyywrap nounput noinput never-interactive
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%x BYTESTRING
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%x PROPNODENAME
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%s V1
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PROPNODECHAR [a-zA-Z0-9,._+*#?@-]
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PATHCHAR ({PROPNODECHAR}|[/])
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LABEL [a-zA-Z_][a-zA-Z0-9_]*
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STRING \"([^\\"]|\\.)*\"
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CHAR_LITERAL '([^']|\\')*'
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WS [[:space:]]
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COMMENT "/*"([^*]|\*+[^*/])*\*+"/"
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LINECOMMENT "//".*\n
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%{
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#include "dtc.h"
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#include "srcpos.h"
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#include "dtc-parser.tab.h"
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//YYLTYPE yylloc;
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extern bool treesource_error;
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/* CAUTION: this will stop working if we ever use yyless() or yyunput() */
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#define YY_USER_ACTION \
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{ \
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srcpos_update(&yylloc, yytext, yyleng); \
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}
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/*#define LEXDEBUG 1*/
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#ifdef LEXDEBUG
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#define DPRINT(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__)
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#else
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#define DPRINT(fmt, ...) do { } while (0)
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#endif
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static int dts_version = 1;
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#define BEGIN_DEFAULT() DPRINT("<V1>\n"); \
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BEGIN(V1); \
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static void push_input_file(const char *filename);
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static bool pop_input_file(void);
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static void PRINTF(1, 2) lexical_error(const char *fmt, ...);
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%}
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%%
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<*>"/include/"{WS}*{STRING} {
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char *name = strchr(yytext, '\"') + 1;
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yytext[yyleng-1] = '\0';
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push_input_file(name);
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}
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<*>^"#"(line)?[ \t]+[0-9]+[ \t]+{STRING}([ \t]+[0-9]+)? {
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char *line, *fnstart, *fnend;
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struct data fn;
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/* skip text before line # */
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line = yytext;
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while (!isdigit((unsigned char)*line))
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line++;
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/* regexp ensures that first and list "
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* in the whole yytext are those at
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* beginning and end of the filename string */
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fnstart = memchr(yytext, '"', yyleng);
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for (fnend = yytext + yyleng - 1;
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*fnend != '"'; fnend--)
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;
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assert(fnstart && fnend && (fnend > fnstart));
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fn = data_copy_escape_string(fnstart + 1,
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fnend - fnstart - 1);
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/* Don't allow nuls in filenames */
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if (memchr(fn.val, '\0', fn.len - 1))
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lexical_error("nul in line number directive");
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/* -1 since #line is the number of the next line */
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srcpos_set_line(xstrdup(fn.val), atoi(line) - 1);
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data_free(fn);
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}
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<*><<EOF>> {
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if (!pop_input_file()) {
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yyterminate();
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}
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}
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<*>{STRING} {
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DPRINT("String: %s\n", yytext);
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yylval.data = data_copy_escape_string(yytext+1,
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yyleng-2);
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return DT_STRING;
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}
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<*>"/dts-v1/" {
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DPRINT("Keyword: /dts-v1/\n");
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dts_version = 1;
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BEGIN_DEFAULT();
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return DT_V1;
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}
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<*>"/plugin/" {
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DPRINT("Keyword: /plugin/\n");
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return DT_PLUGIN;
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}
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<*>"/memreserve/" {
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DPRINT("Keyword: /memreserve/\n");
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BEGIN_DEFAULT();
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return DT_MEMRESERVE;
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}
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<*>"/bits/" {
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DPRINT("Keyword: /bits/\n");
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BEGIN_DEFAULT();
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return DT_BITS;
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}
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<*>"/delete-property/" {
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DPRINT("Keyword: /delete-property/\n");
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DPRINT("<PROPNODENAME>\n");
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BEGIN(PROPNODENAME);
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return DT_DEL_PROP;
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}
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<*>"/delete-node/" {
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DPRINT("Keyword: /delete-node/\n");
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DPRINT("<PROPNODENAME>\n");
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BEGIN(PROPNODENAME);
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return DT_DEL_NODE;
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}
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<*>{LABEL}: {
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DPRINT("Label: %s\n", yytext);
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yylval.labelref = xstrdup(yytext);
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yylval.labelref[yyleng-1] = '\0';
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return DT_LABEL;
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}
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<V1>([0-9]+|0[xX][0-9a-fA-F]+)(U|L|UL|LL|ULL)? {
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char *e;
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DPRINT("Integer Literal: '%s'\n", yytext);
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errno = 0;
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yylval.integer = strtoull(yytext, &e, 0);
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if (*e && e[strspn(e, "UL")]) {
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lexical_error("Bad integer literal '%s'",
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yytext);
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}
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if (errno == ERANGE)
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lexical_error("Integer literal '%s' out of range",
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yytext);
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else
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/* ERANGE is the only strtoull error triggerable
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* by strings matching the pattern */
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assert(errno == 0);
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return DT_LITERAL;
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}
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<*>{CHAR_LITERAL} {
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struct data d;
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DPRINT("Character literal: %s\n", yytext);
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d = data_copy_escape_string(yytext+1, yyleng-2);
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if (d.len == 1) {
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lexical_error("Empty character literal");
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yylval.integer = 0;
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} else {
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yylval.integer = (unsigned char)d.val[0];
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if (d.len > 2)
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lexical_error("Character literal has %d"
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" characters instead of 1",
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d.len - 1);
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}
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data_free(d);
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return DT_CHAR_LITERAL;
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}
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<*>\&{LABEL} { /* label reference */
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DPRINT("Ref: %s\n", yytext+1);
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yylval.labelref = xstrdup(yytext+1);
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return DT_REF;
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}
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<*>"&{/"{PATHCHAR}*\} { /* new-style path reference */
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yytext[yyleng-1] = '\0';
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DPRINT("Ref: %s\n", yytext+2);
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yylval.labelref = xstrdup(yytext+2);
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return DT_REF;
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}
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<BYTESTRING>[0-9a-fA-F]{2} {
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yylval.byte = strtol(yytext, NULL, 16);
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DPRINT("Byte: %02x\n", (int)yylval.byte);
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return DT_BYTE;
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}
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<BYTESTRING>"]" {
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DPRINT("/BYTESTRING\n");
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BEGIN_DEFAULT();
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return ']';
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}
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<PROPNODENAME>\\?{PROPNODECHAR}+ {
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DPRINT("PropNodeName: %s\n", yytext);
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yylval.propnodename = xstrdup((yytext[0] == '\\') ?
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yytext + 1 : yytext);
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BEGIN_DEFAULT();
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return DT_PROPNODENAME;
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}
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"/incbin/" {
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DPRINT("Binary Include\n");
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return DT_INCBIN;
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}
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<*>{WS}+ /* eat whitespace */
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<*>{COMMENT}+ /* eat C-style comments */
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<*>{LINECOMMENT}+ /* eat C++-style comments */
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<*>"<<" { return DT_LSHIFT; };
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<*>">>" { return DT_RSHIFT; };
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<*>"<=" { return DT_LE; };
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<*>">=" { return DT_GE; };
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<*>"==" { return DT_EQ; };
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<*>"!=" { return DT_NE; };
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<*>"&&" { return DT_AND; };
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<*>"||" { return DT_OR; };
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<*>. {
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DPRINT("Char: %c (\\x%02x)\n", yytext[0],
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(unsigned)yytext[0]);
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if (yytext[0] == '[') {
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DPRINT("<BYTESTRING>\n");
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BEGIN(BYTESTRING);
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}
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if ((yytext[0] == '{')
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|| (yytext[0] == ';')) {
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DPRINT("<PROPNODENAME>\n");
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BEGIN(PROPNODENAME);
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}
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return yytext[0];
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}
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%%
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static void push_input_file(const char *filename)
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{
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assert(filename);
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srcfile_push(filename);
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yyin = current_srcfile->f;
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yypush_buffer_state(yy_create_buffer(yyin, YY_BUF_SIZE));
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}
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static bool pop_input_file(void)
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{
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if (srcfile_pop() == 0)
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return false;
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yypop_buffer_state();
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yyin = current_srcfile->f;
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return true;
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}
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static void lexical_error(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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srcpos_verror(&yylloc, "Lexical error", fmt, ap);
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va_end(ap);
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treesource_error = true;
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}
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60
u-boot/mt7623n_bpir2_defconfig
Normal file
60
u-boot/mt7623n_bpir2_defconfig
Normal file
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@ -0,0 +1,60 @@
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CONFIG_ARM=y
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CONFIG_SYS_THUMB_BUILD=y
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CONFIG_ARCH_MEDIATEK=y
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CONFIG_SYS_TEXT_BASE=0x81e00000
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CONFIG_SYS_MALLOC_F_LEN=0x4000
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CONFIG_NR_DRAM_BANKS=1
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CONFIG_FIT=y
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CONFIG_FIT_VERBOSE=y
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CONFIG_USE_BOOTCOMMAND=y
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CONFIG_BOOTCOMMAND="fatload mmc 1 0x82000000 boot.img; source 0x82000000"
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CONFIG_BOOTDELAY=3
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CONFIG_SYS_CONSOLE_IS_IN_ENV=y
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CONFIG_DEFAULT_FDT_FILE="mt7623n-bananapi-bpi-r2"
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# CONFIG_DISPLAY_BOARDINFO is not set
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CONFIG_HUSH_PARSER=y
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CONFIG_SYS_PROMPT="U-Boot-XZ> "
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CONFIG_CMD_BOOTMENU=y
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# CONFIG_CMD_ELF is not set
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# CONFIG_CMD_XIMG is not set
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# CONFIG_CMD_FLASH is not set
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CONFIG_CMD_GPIO=y
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CONFIG_CMD_BOOTZ=y
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CONFIG_CMD_GPT=y
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CONFIG_CMD_MMC=y
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CONFIG_CMD_PART=y
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CONFIG_CMD_READ=y
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# CONFIG_CMD_SETEXPR is not set
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# CONFIG_CMD_NFS is not set
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CONFIG_CMD_PING=y
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CONFIG_CMD_FAT=y
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CONFIG_CMD_FS_GENERIC=y
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CONFIG_DEFAULT_DEVICE_TREE="mt7623n-bananapi-bpi-r2"
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CONFIG_ENV_IS_IN_MMC=y
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CONFIG_NET_RANDOM_ETHADDR=y
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CONFIG_REGMAP=y
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CONFIG_SYSCON=y
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# CONFIG_BLOCK_CACHE is not set
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CONFIG_CLK=y
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CONFIG_DM_MMC=y
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# CONFIG_MMC_QUIRKS is not set
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CONFIG_SUPPORT_EMMC_BOOT=y
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CONFIG_MMC_HS400_SUPPORT=y
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CONFIG_MMC_MTK=y
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CONFIG_PHY_FIXED=y
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CONFIG_DM_ETH=y
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CONFIG_MEDIATEK_ETH=y
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CONFIG_PINCTRL=y
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CONFIG_PINCONF=y
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CONFIG_PINCTRL_MT7623=y
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CONFIG_POWER_DOMAIN=y
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CONFIG_MTK_POWER_DOMAIN=y
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CONFIG_DM_SERIAL=y
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CONFIG_MTK_SERIAL=y
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CONFIG_SYSRESET=y
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CONFIG_SYSRESET_WATCHDOG=y
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CONFIG_TIMER=y
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CONFIG_MTK_TIMER=y
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CONFIG_WDT_MTK=y
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CONFIG_LZMA=y
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# CONFIG_EFI_LOADER is not set
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