[coreboot-gerrit] New patch to review for coreboot: util/igbetool: Add tool for Intel GbE flash region generation
Damien Zammit (damien@zamaudio.com)
gerrit at coreboot.org
Tue Nov 15 06:09:42 CET 2016
Damien Zammit (damien at zamaudio.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17423
-gerrit
commit 5b321784cb9512a671fd116d844d0be43d4c8a04
Author: Damien Zammit <damien at zamaudio.com>
Date: Tue Nov 15 16:00:36 2016 +1100
util/igbetool: Add tool for Intel GbE flash region generation
This supercedes the original prototype tool.
It is endian safe and does not rely on "struct bitfields".
This tool generates a binary iGbE region based on
an input spec and a set of values.
Usage:
make && make gen-ich9m
Dependencies:
bison and flex
Outputs by default valid `flashregion_3_gbe.bin` for ICH9M
using Lenovo X200 settings.
This configuration can be both extended or altered to
produce either other ICH9M configs or other chipset GbEs.
Signed-off-by: Damien Zammit <damien at zamaudio.com>
Change-Id: I7f925078ae551c7a7b34101ea633f23dad2df421
---
util/igbetool/Makefile | 28 ++++
util/igbetool/ich9m.set | 88 ++++++++++
util/igbetool/ich9m.spec | 150 +++++++++++++++++
util/igbetool/igbetool.l | 130 +++++++++++++++
util/igbetool/igbetool.y | 417 +++++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 813 insertions(+)
diff --git a/util/igbetool/Makefile b/util/igbetool/Makefile
new file mode 100644
index 0000000..1d34f91
--- /dev/null
+++ b/util/igbetool/Makefile
@@ -0,0 +1,28 @@
+MACADDRESS ?= 00:f5:f0:40:71:fe
+CC = gcc
+YACC = bison
+LEX = flex
+
+igbetool: igbetool.o
+ mv igbetool.o igbetool
+
+%.o: %.lex.c %.tab.c %.tab.h
+ $(CC) -Wall -Wno-unused-function -g -o $@ $^ -lfl
+
+%.lex.c: %.l
+ $(LEX) -o $(patsubst %.l,%.lex.c,$<) $<
+
+%.tab.c %.tab.h: %.y
+ $(YACC) -d $<
+
+# Use this target to generate flashregion_3_gbe.bin
+gen-ich9m:
+ cat ich9m.spec ich9m.set | ./igbetool -m $(MACADDRESS) > flashregion_3_gbe.bin
+ # duplicate binary as per spec
+ cat ich9m.spec ich9m.set | ./igbetool -m $(MACADDRESS) >> flashregion_3_gbe.bin
+
+
+.PHONY: clean gen-ich9m
+
+clean:
+ rm -f *.lex.c *.tab.c *.tab.h *.o igbetool flashregion_3_gbe.bin
diff --git a/util/igbetool/ich9m.set b/util/igbetool/ich9m.set
new file mode 100644
index 0000000..9b4fe29
--- /dev/null
+++ b/util/igbetool/ich9m.set
@@ -0,0 +1,88 @@
+#
+# Copyright (C) 2016 Damien Zammit <damien at zamaudio.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+
+# GbE values for ICH9M
+{
+ # Hardcoded chipset values
+ "reserved04" = 0xffff,
+ "version05" = 0x1083,
+ "reserved06" = 0xffff,
+ "reserved07" = 0xffff,
+ "pbalow" = 0xffff,
+ "pbahigh" = 0xffff,
+ "pci_loadvid" = 1,
+ "pci_loadssid" = 1,
+ "pci_pmen" = 1,
+ "pci_auxpwr" = 1,
+ "pci_reserved4" = 1,
+ "sh_phy_enpwrdown" = 1,
+ "sh_reserved1" = 0x5,
+ "sh_reserved3" = 1,
+ "sh_sign" = 0x2,
+ "cw1_extcfgptr" = 0x020,
+ "cw1_oemload" = 1,
+ "cw1_reserved1" = 1,
+ "cw2_extphylen" = 0x05,
+ "l1_reserved2" = 1,
+ "l1_reserved4" = 1,
+ "l1_lplu_non_d0a" = 1,
+ "l1_gbedis_non_d0a" = 1,
+ "reserved19" = 0x2b40,
+ "reserved1a" = 0x0043,
+ "reserved1c" = 0x10f5,
+ "reserved1d" = 0xbaad,
+ "_82567lm" = 0x10f5,
+ "_82567lf" = 0x10bf,
+ "reserved20" = 0xbaad,
+ "_82567v" = 0x10cb,
+ "reserved22" = 0xbaad,
+ "reserved23" = 0xbaad,
+
+ # Hardcoded PXE setup (disabled)
+ "pxe30_defbootsel" = 0x3,
+ "pxe30_ctrlsprompt" = 0x3,
+ "pxe30_pxeabsent" = 1,
+ "pxe31_disablemenu" = 1,
+ "pxe31_disabletitle" = 1,
+ "pxe31_signature" = 1,
+ "pxe32_buildnum" = 0x18,
+ "pxe32_minorversion" = 0x3,
+ "pxe32_majorversion" = 0x1,
+ "pxe33_basecodeabsent" = 1,
+ "pxe33_undipresent" = 1,
+ "pxe33_reserved1" = 1,
+ "pxe33_signature" = 1,
+ "pxe_padding"[11] = 0xffff,
+
+ # GbE power settings
+ "lanpwr_d3pwr" = 1,
+ "lanpwr_d0pwr" = 13,
+
+ # GbE LED modes
+ "l1_led1mode" = 0xb,
+ "l1_led1blinks" = 1,
+ "l02_led0mode" = 0x2,
+ "l02_led2mode" = 0x1,
+
+ # Padding 0xf80 bytes
+ "padding"[0xf80] = 0xff,
+
+ # TODO: make command line switch for these
+
+ # Configurable PCI IDs
+ "ssdid" = 0x20ee,
+ "ssvid" = 0x17aa,
+ "did" = 0x10f5,
+ "vid" = 0x8086
+}
diff --git a/util/igbetool/ich9m.spec b/util/igbetool/ich9m.spec
new file mode 100644
index 0000000..70b3050
--- /dev/null
+++ b/util/igbetool/ich9m.spec
@@ -0,0 +1,150 @@
+#
+# Copyright (C) 2014 Steve Shenton <sgsit at libreboot.org>
+# Leah Rowe <info at minifree.org>
+# Copyright (C) 2016 Damien Zammit <damien at zamaudio.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+#
+# Datasheets:
+#
+# http://www.intel.co.uk/content/dam/doc/application-note/i-o-controller-hub-9m-82567lf-lm-v-nvm-map-appl-note.pdf
+# https://communities.intel.com/community/wired/blog/2010/10/14/how-to-basic-eeprom-checksums
+
+# GbE SPEC for ICH9M
+{
+ "macaddress"[6] : 8,
+ "ba_reserved1_0" : 8,
+ "ba_reserved1_1" : 3,
+ "ba_ibootagent" : 1,
+ "ba_reserved2" : 4,
+ "reserved04" : 16,
+ "version05" : 16,
+ "reserved06" : 16,
+ "reserved07" : 16,
+ "pbalow" : 16,
+ "pbahigh" : 16,
+ "pci_loadvid" : 1,
+ "pci_loadssid" : 1,
+ "pci_reserved1" : 1,
+ "pci_reserved2" : 3,
+ "pci_pmen" : 1,
+ "pci_auxpwr" : 1,
+ "pci_reserved3" : 4,
+ "pci_reserved4" : 4,
+ "ssdid" : 16,
+ "ssvid" : 16,
+ "did" : 16,
+ "vid" : 16,
+ "devrevid" : 16,
+ "lanpwr_d3pwr" : 5,
+ "lanpwr_reserved" : 3,
+ "lanpwr_d0pwr" : 8,
+ "reserved11" : 16,
+ "reserved12" : 16,
+ "sh_reserved1" : 3,
+ "sh_force_halfduplex" : 1,
+ "sh_force_lowspeed" : 1,
+ "sh_reserved2_0" : 3,
+ "sh_reserved2_1" : 1,
+ "sh_phy_enpwrdown" : 1,
+ "sh_reserved3" : 1,
+ "sh_reserved4" : 3,
+ "sh_sign" : 2,
+ "cw1_extcfgptr" : 12,
+ "cw1_oemload" : 1,
+ "cw1_reserved1" : 1,
+ "cw1_reserved2" : 1,
+ "cw1_reserved3" : 1,
+ "cw2_reserved" : 8,
+ "cw2_extphylen" : 8,
+ "extcfg16" : 16,
+ "l1_led1mode" : 4,
+ "l1_reserved1" : 1,
+ "l1_led1fastblink" : 1,
+ "l1_led1invert" : 1,
+ "l1_led1blinks" : 1,
+ "l1_reserved2" : 1,
+ "l1_lplu_all" : 1,
+ "l1_lplu_non_d0a" : 1,
+ "l1_gbedis_non_d0a" : 1,
+ "l1_reserved3" : 2,
+ "l1_gbedis" : 1,
+ "l1_reserved4" : 1,
+ "l02_led0mode" : 4,
+ "l02_reserved1" : 1,
+ "l02_led0fastblink" : 1,
+ "l02_led0invert" : 1,
+ "l02_led0blinks" : 1,
+ "l02_led2mode" : 4,
+ "l02_reserved2" : 1,
+ "l02_led2fastblink" : 1,
+ "l02_led2invert" : 1,
+ "l02_led2blinks" : 1,
+ "reserved19" : 16,
+ "reserved1a" : 16,
+ "reserved1b" : 16,
+ "reserved1c" : 16,
+ "reserved1d" : 16,
+ "_82567lm" : 16,
+ "_82567lf" : 16,
+ "reserved20" : 16,
+ "_82567v" : 16,
+ "reserved22" : 16,
+ "reserved23" : 16,
+ "reserved24" : 16,
+ "reserved25" : 16,
+ "reserved26" : 16,
+ "reserved27" : 16,
+ "reserved28" : 16,
+ "reserved29" : 16,
+ "reserved2a" : 16,
+ "reserved2b" : 16,
+ "reserved2c" : 16,
+ "reserved2d" : 16,
+ "reserved2e" : 16,
+ "reserved2f" : 16,
+ "pxe30_protocolsel" : 2,
+ "pxe30_reserved1" : 1,
+ "pxe30_defbootsel" : 2,
+ "pxe30_reserved2" : 1,
+ "pxe30_ctrlsprompt" : 2,
+ "pxe30_dispsetup" : 1,
+ "pxe30_reserved3" : 1,
+ "pxe30_forcespeed" : 2,
+ "pxe30_forcefullduplex" : 1,
+ "pxe30_reserved4" : 1,
+ "pxe30_efipresent" : 1,
+ "pxe30_pxeabsent" : 1,
+ "pxe31_disablemenu" : 1,
+ "pxe31_disabletitle" : 1,
+ "pxe31_disableprotsel" : 1,
+ "pxe31_disablebootorder": 1,
+ "pxe31_disablelegacywak": 1,
+ "pxe31_disableflash_pro": 1,
+ "pxe31_reserved1" : 2,
+ "pxe31_ibootagentmode" : 3,
+ "pxe31_reserved2" : 3,
+ "pxe31_signature" : 2,
+ "pxe32_buildnum" : 8,
+ "pxe32_minorversion" : 4,
+ "pxe32_majorversion" : 4,
+ "pxe33_basecodeabsent" : 1,
+ "pxe33_undipresent" : 1,
+ "pxe33_reserved1" : 1,
+ "pxe33_efiundipresent" : 1,
+ "pxe33_reserved2_0" : 4,
+ "pxe33_reserved2_1" : 6,
+ "pxe33_signature" : 2,
+ "pxe_padding"[11] : 16,
+ "checksum" : 16,
+ "padding"[0xf80] : 8
+}
diff --git a/util/igbetool/igbetool.l b/util/igbetool/igbetool.l
new file mode 100644
index 0000000..af62940
--- /dev/null
+++ b/util/igbetool/igbetool.l
@@ -0,0 +1,130 @@
+/*
+ * igbetool - Generator for Intel GigaBit Ethernet flash region
+ * Copyright (C) 2016 Damien Zammit <damien at zamaudio.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+%{
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "igbetool.tab.h"
+
+unsigned int parsehex (char *s)
+{
+ unsigned int i, nib, val = 0;
+ unsigned int nibs = strlen(s) - 2;
+
+ for (i = 2; i < nibs + 2; i++) {
+ if (s[i] >= '0' && s[i] <= '9') {
+ nib = s[i] - '0';
+ } else if (s[i] >= 'a' && s[i] <= 'f') {
+ nib = s[i] - 'a' + 10;
+ } else if (s[i] >= 'A' && s[i] <= 'F') {
+ nib = s[i] - 'A' + 10;
+ }
+
+ val |= nib << (((nibs - 1) - (i - 2)) * 4);
+ }
+ return val;
+}
+
+char* stripquotes (char *string)
+{
+ char *stripped;
+ unsigned int len = strlen(string);
+ if (string[0] == '\"' && string[len-1] == '\"') {
+ stripped = (char *) malloc (len - 2 + 1);
+ snprintf (stripped, len - 2 + 1, "%s", string+1);
+ }
+ stripped[len-2] = '\0';
+ return stripped;
+}
+
+%}
+
+DIGIT1to9 [1-9]
+DIGIT [0-9]
+DIGITS {DIGIT}+
+INT {DIGIT}|{DIGIT1to9}{DIGITS}|-{DIGIT}|-{DIGIT1to9}{DIGITS}
+FRAC [.]{DIGITS}
+E [eE][+-]?
+EXP {E}{DIGITS}
+HEX_DIGIT [0-9a-fA-F]
+HEX_DIGITS {HEX_DIGIT}+
+NUMBER {INT}|{INT}{FRAC}|{INT}{EXP}|{INT}{FRAC}{EXP}
+UNICODECHAR \\u{HEX_DIGIT}{HEX_DIGIT}{HEX_DIGIT}{HEX_DIGIT}
+ALPHA [a-zA-Z]
+SPECIAL [()"'@_\-:/.,;<> ]
+VARCHAR {ALPHA}|{DIGIT}|{SPECIAL}
+CHAR {VARCHAR}|{UNICODECHAR}
+CHARS {CHAR}+
+QUOTE ["]
+HEX_PREFIX [0][x]
+HEX {HEX_PREFIX}{HEX_DIGITS}
+STRING {QUOTE}{QUOTE}|{QUOTE}{CHARS}{QUOTE}
+COMMENT [#]{CHARS}[\n]|[#]\n
+
+%%
+
+{STRING} {
+ yylval.str = stripquotes(yytext);
+ return name;
+};
+
+{NUMBER} {
+ yylval.u32 = atoi(yytext);
+ return val;
+};
+
+{HEX} {
+ yylval.u32 = parsehex(yytext);
+ return val;
+};
+
+\{ {
+ return '{';
+};
+
+\} {
+ return '}';
+};
+
+\[ {
+ return '[';
+};
+
+\] {
+ return ']';
+};
+
+, {
+ return ',';
+};
+
+: {
+ return ':';
+};
+
+= {
+ return '=';
+};
+
+[ \t\n]+ /* ignore whitespace */;
+
+{COMMENT} /* ignore comments */
+
+. {
+ printf("Unexpected: %c\nExiting...\n",*yytext);
+ exit(0);
+}
+%%
diff --git a/util/igbetool/igbetool.y b/util/igbetool/igbetool.y
new file mode 100644
index 0000000..a5fd10a
--- /dev/null
+++ b/util/igbetool/igbetool.y
@@ -0,0 +1,417 @@
+/*
+ * igbetool - Generator for Intel GigaBit Ethernet flash region
+ * Copyright (C) 2016 Damien Zammit <damien at zamaudio.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+%{
+#include <stdio.h>
+#include <inttypes.h>
+#include <stdlib.h>
+#include <string.h>
+int yylex (void);
+void yyerror (char const *);
+
+struct macaddr {
+ unsigned char byte[6];
+};
+
+struct pciids {
+ unsigned short ssdid; // Subsystem device id
+ unsigned short ssvid; // Subsystem vendor id
+ unsigned short did; // Device id
+ unsigned short vid; // Vendor id
+};
+
+struct field {
+ char *name;
+ unsigned int width;
+ unsigned int value;
+ struct field *next;
+};
+
+extern struct field *sym_table;
+struct field *putsym (char const *, unsigned int);
+struct field *getsym (char const *);
+
+struct field *sym_table;
+struct field *sym_table_tail;
+
+struct blob {
+ unsigned int bloblen;
+ unsigned char *blb;
+ unsigned short checksum;
+};
+
+#define VALID_BIT 0x80
+#define MAX_WIDTH 32
+#define CHECKSUM_SIZE 16
+
+struct blob *binary;
+struct macaddr mac;
+struct pciids ids;
+
+static struct macaddr parsemac(char *mac)
+{
+ struct macaddr m = { 0 };
+ int i, j;
+
+ for (i = 0; i < 6; i++) {
+ /* Go through each nibble of the byte */
+ for (j = 0; j < 2; j++) {
+ if (mac[(i*3) + j] >= 'a' && mac[(i*3) + j] <= 'f')
+ m.byte[i] |= (uint8_t)(
+ (mac[(i*3)+j] - 87) << ((j^1) << 2)
+ );
+ else if (mac[(i*3) + j] >= 'A' && mac[(i*3) + j] <= 'F')
+ m.byte[i] |= (uint8_t)(
+ (mac[(i*3) + j] - 55) << ((j^1) << 2)
+ );
+ else if (mac[(i*3) +j ] >= '0' && mac[(i*3) + j] <= '9')
+ m.byte[i] |= (uint8_t)(
+ (mac[(i*3) + j] - 48) << ((j^1) << 2)
+ );
+ else {
+ fprintf(stderr, "Error: MAC address invalid \n");
+ exit(1);
+ }
+ }
+ }
+ return m;
+}
+
+unsigned char* value_to_bits (unsigned int v, unsigned int w)
+{
+ unsigned int i;
+ unsigned char* bitarr;
+
+ if (w > MAX_WIDTH) w = MAX_WIDTH;
+ bitarr = (unsigned char *) malloc (w * sizeof (unsigned char));
+ memset (bitarr, 0, w);
+
+ for (i = 0; i < w; i++) {
+ bitarr[i] = VALID_BIT | ((v & (1 << i)) >> i);
+ }
+ return bitarr;
+}
+
+/* Store each bit of a bitfield in a new byte sequentially 0x80 or 0x81 */
+void append_field_to_blob (unsigned char b[], unsigned int w)
+{
+ unsigned int i, j;
+ binary->blb = (unsigned char *) realloc (binary->blb, binary->bloblen + w);
+ for (j = 0, i = binary->bloblen; i < binary->bloblen + w; i++, j++) {
+ binary->blb[i] = VALID_BIT | (b[j] & 1);
+ //fprintf (stderr, "blob[0x%0x] = %d\n", i, binary->blb[i] & 1);
+ }
+ binary->bloblen += w;
+}
+
+void set_bitfield(char *name, unsigned int value)
+{
+ unsigned long long i;
+ struct field *bf = getsym (name);
+ if (bf) {
+ bf->value = value & 0xffffffff;
+ i = (1 << bf->width) - 1;
+ if (bf->width > 8 * sizeof (unsigned int)) {
+ fprintf(stderr, "Overflow in bitfield, truncating bits to fit\n");
+ bf->value = value & i;
+ }
+ //fprintf(stderr, "Setting `%s` = %d\n", bf->name, bf->value);
+ } else {
+ fprintf(stderr, "Can't find bitfield `%s` in spec\n", name);
+ }
+}
+
+void set_bitfield_array(char *name, unsigned int n, unsigned int value)
+{
+ unsigned int i;
+ unsigned int len = strlen (name);
+ char *namen = (char *) malloc ((len + 9) * sizeof (char));
+ for (i = 0; i < n; i++) {
+ snprintf (namen, len + 8, "%s%x", name, i);
+ set_bitfield (namen, value);
+ }
+ free(namen);
+}
+
+void create_new_bitfield(char *name, unsigned int width)
+{
+ struct field *bf;
+
+ if (!(bf = putsym (name, width))) return;
+ //fprintf(stderr, "Added bitfield `%s` : %d\n", bf->name, width);
+}
+
+void create_new_bitfields(char *name, unsigned int n, unsigned int width)
+{
+ unsigned int i;
+ unsigned int len = strlen (name);
+ char *namen = (char *) malloc ((len + 9) * sizeof (char));
+ for (i = 0; i < n; i++) {
+ snprintf (namen, len + 8, "%s%x", name, i);
+ create_new_bitfield (namen, width);
+ }
+ free(namen);
+}
+
+struct field *putsym (char const *sym_name, unsigned int w)
+{
+ if (getsym(sym_name)) {
+ fprintf(stderr, "Cannot add duplicate named bitfield `%s`\n", sym_name);
+ return 0;
+ }
+ struct field *ptr = (struct field *) malloc (sizeof (struct field));
+ ptr->name = (char *) malloc (strlen (sym_name) + 1);
+ strcpy (ptr->name, sym_name);
+ ptr->width = w;
+ ptr->value = 0;
+ ptr->next = (struct field *)0;
+ if (sym_table_tail) {
+ sym_table_tail->next = ptr;
+ } else {
+ sym_table = ptr;
+ }
+ sym_table_tail = ptr;
+ return ptr;
+}
+
+struct field *getsym (char const *sym_name)
+{
+ struct field *ptr;
+ for (ptr = sym_table; ptr != (struct field *) 0;
+ ptr = (struct field *)ptr->next) {
+ if (strcmp (ptr->name, sym_name) == 0)
+ return ptr;
+ }
+ return 0;
+}
+
+void dump_all_values (void)
+{
+ struct field *ptr;
+ for (ptr = sym_table; ptr != (struct field *) 0;
+ ptr = (struct field *)ptr->next) {
+ fprintf(stderr, "%s = %d (%d bits)\n",
+ ptr->name,
+ ptr->value,
+ ptr->width);
+ }
+}
+
+void empty_field_table(void)
+{
+ struct field *ptr;
+ struct field *ptrnext;
+
+ for (ptr = sym_table; ptr != (struct field *) 0; ptr = ptrnext) {
+ if (ptr) {
+ ptrnext = ptr->next;
+ free(ptr);
+ } else {
+ ptrnext = (struct field *) 0;
+ }
+ }
+ sym_table = 0;
+ sym_table_tail = 0;
+}
+
+void create_binary_blob (void)
+{
+ if (binary && binary->blb) {
+ free(binary->blb);
+ free(binary);
+ }
+ binary = (struct blob *) malloc (sizeof (struct blob));
+ binary->blb = (unsigned char *) malloc (sizeof (unsigned char));
+ binary->bloblen = 0;
+ binary->blb[0] = VALID_BIT;
+}
+
+/* {}[] -> {} */
+void generate_setter_bitfields(void)
+{
+ fprintf(stderr, "TODO: binary decompiler\n");
+}
+
+/* {}{} -> [] */
+void generate_binary(void)
+{
+ unsigned int i;
+
+ if (binary->bloblen % 8) {
+ fprintf (stderr, "ERROR: Spec must be multiple of 8 bits wide\n");
+ exit (1);
+ }
+
+ set_bitfield("macaddress0", mac.byte[0]);
+ set_bitfield("macaddress1", mac.byte[1]);
+ set_bitfield("macaddress2", mac.byte[2]);
+ set_bitfield("macaddress3", mac.byte[3]);
+ set_bitfield("macaddress4", mac.byte[4]);
+ set_bitfield("macaddress5", mac.byte[5]);
+
+ /* traverse spec, push to blob and add up for checksum */
+ struct field *ptr;
+ unsigned int uptochksum = 0;
+ for (ptr = sym_table; ptr != (struct field *) 0; ptr = ptr->next) {
+ if (strcmp (ptr->name, "checksum") == 0) {
+ /* Stop traversing because we hit checksum */
+ ptr = ptr->next;
+ break;
+ }
+ append_field_to_blob (
+ value_to_bits(ptr->value, ptr->width),
+ ptr->width);
+ uptochksum += ptr->width;
+ }
+
+ /* deserialize bits of blob up to checksum */
+ for (i = 0; i < uptochksum; i += 8) {
+ unsigned char byte = (((binary->blb[i+0] & 1) << 0)
+ | ((binary->blb[i+1] & 1) << 1)
+ | ((binary->blb[i+2] & 1) << 2)
+ | ((binary->blb[i+3] & 1) << 3)
+ | ((binary->blb[i+4] & 1) << 4)
+ | ((binary->blb[i+5] & 1) << 5)
+ | ((binary->blb[i+6] & 1) << 6)
+ | ((binary->blb[i+7] & 1) << 7)
+ );
+ fprintf(stdout, "%c", byte);
+
+ /* incremental 16 bit checksum */
+ if ((i % 16) < 8) {
+ binary->checksum += byte;
+ } else {
+ binary->checksum += byte << 8;
+ }
+ }
+
+ /* Now write checksum */
+ set_bitfield ("checksum", binary->checksum);
+
+ fprintf(stdout, "%c", 0xba - (binary->checksum & 0xff));
+ fprintf(stdout, "%c", 0xba - ((binary->checksum & 0xff00) >> 8));
+
+ append_field_to_blob (value_to_bits(binary->checksum, 16), 16);
+
+ for (; ptr != (struct field *) 0; ptr = ptr->next) {
+ append_field_to_blob (
+ value_to_bits(ptr->value, ptr->width), ptr->width);
+ }
+
+ /* deserialize rest of blob past checksum */
+ for (i = uptochksum + CHECKSUM_SIZE; i < binary->bloblen; i += 8) {
+ unsigned char byte = (((binary->blb[i+0] & 1) << 0)
+ | ((binary->blb[i+1] & 1) << 1)
+ | ((binary->blb[i+2] & 1) << 2)
+ | ((binary->blb[i+3] & 1) << 3)
+ | ((binary->blb[i+4] & 1) << 4)
+ | ((binary->blb[i+5] & 1) << 5)
+ | ((binary->blb[i+6] & 1) << 6)
+ | ((binary->blb[i+7] & 1) << 7)
+ );
+ fprintf(stdout, "%c", byte);
+ }
+}
+
+%}
+
+%union
+{
+ char *str;
+ unsigned int u32;
+ unsigned char u8;
+ unsigned int *u32array;
+}
+
+%token <u32> val
+%token <u32array> vals
+%token <str> name
+%token <u8> hexbyte
+
+%left '{' '}'
+%left '[' ']'
+%left ','
+%left ':'
+%left '='
+
+%%
+
+input:
+ %empty
+| input spec setter { empty_field_table(); }
+| input spec binary { empty_field_table(); }
+;
+
+spec:
+ '{' '}' { fprintf (stderr, "No spec\n"); }
+| '{' specmembers '}' { fprintf (stderr, "Parsed all spec\n");
+ create_binary_blob(); }
+;
+
+specmembers:
+ specpair
+| specpair ',' specmembers
+;
+
+specpair:
+ name ':' val { create_new_bitfield($1, $3); }
+| name '[' val ']' ':' val { create_new_bitfields($1, $3, $6); }
+;
+
+setter:
+ '{' '}' { fprintf (stderr, "No values\n"); }
+| '{' valuemembers '}' { fprintf (stderr, "Parsed all values\n");
+ generate_binary(); }
+;
+
+valuemembers:
+ setpair
+| setpair ',' valuemembers
+;
+
+setpair:
+ name '=' val { set_bitfield($1, $3); }
+| name '[' val ']' '=' val { set_bitfield_array($1, $3, $6); }
+;
+
+binary:
+ '[' ']' { fprintf (stderr, "No binary\n"); }
+| '[' bytes ']' { fprintf (stderr, "Parsed all bytes\n");
+ generate_setter_bitfields(); }
+;
+
+bytes:
+ hexbyte { append_field_to_blob(value_to_bits($1, 8), 8); }
+| bytes ',' hexbyte { append_field_to_blob(value_to_bits($3, 8), 8); }
+;
+
+%%
+
+/* Called by yyparse on error. */
+void yyerror (char const *s)
+{
+ fprintf (stderr, "yyerror: %s\n", s);
+}
+
+int main (int argc, char *argv[])
+{
+ if (argc > 1) {
+ if (strcmp (argv[1], "-m") == 0) {
+ mac = parsemac (argv[2]);
+ }
+ }
+
+ return yyparse ();
+}
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