[coreboot] New patch to review for coreboot: d602fc7 Add host side of serialICE which uses ulinux.
Rudolf Marek (r.marek@assembler.cz)
gerrit at coreboot.org
Tue Jun 5 01:02:28 CEST 2012
Rudolf Marek (r.marek at assembler.cz) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1094
-gerrit
commit d602fc79e963057e4db00a4e2dca38d48ad6b484
Author: Rudolf Marek <r.marek at assembler.cz>
Date: Tue Jun 5 00:26:06 2012 +0200
Add host side of serialICE which uses ulinux.
This is copied from serialICE qemu and strtoul is from libpayload. this must be fixed
maybe into string.h?
Change-Id: If71737e6866c5c4dd62b9c26c676686ebfd20bcc
Signed-off-by: Rudolf Marek <r.marek at assembler.cz>
---
src/include/serialice_host.h | 66 ++++
src/lib/serialice_host.c | 676 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 742 insertions(+), 0 deletions(-)
diff --git a/src/include/serialice_host.h b/src/include/serialice_host.h
new file mode 100644
index 0000000..f099325
--- /dev/null
+++ b/src/include/serialice_host.h
@@ -0,0 +1,66 @@
+/*
+ * QEMU PC System Emulator
+ *
+ * Copyright (c) 2009 coresystems GmbH
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef SERIALICE_HH
+#define SERIALICE_HH
+#include <stdint.h>
+extern const char *serialice_device;
+extern int serialice_active;
+
+void serialice_init(void);
+void serialice_exit(void);
+const char *serialice_lua_execute(const char *cmd);
+
+uint8_t serialice_inb(uint16_t port);
+uint16_t serialice_inw(uint16_t port);
+uint32_t serialice_inl(uint16_t port);
+
+void serialice_outb(uint8_t data, uint16_t port);
+void serialice_outw(uint16_t data, uint16_t port);
+void serialice_outl(uint32_t data, uint16_t port);
+
+uint8_t serialice_readb(uint32_t addr);
+uint16_t serialice_readw(uint32_t addr);
+uint32_t serialice_readl(uint32_t addr);
+
+void serialice_writeb(uint8_t data, uint32_t addr);
+void serialice_writew(uint16_t data, uint32_t addr);
+void serialice_writel(uint32_t data, uint32_t addr);
+
+uint64_t serialice_rdmsr(uint32_t addr, uint32_t key);
+void serialice_wrmsr(uint64_t data, uint32_t addr, uint32_t key);
+
+typedef struct {
+ uint32_t eax, ebx, ecx, edx;
+} cpuid_regs_t;
+
+cpuid_regs_t serialice_cpuid(uint32_t eax, uint32_t ecx);
+
+int serialice_handle_load(uint32_t addr, uint32_t * result,
+ unsigned int data_size);
+void serialice_log_load(int caught, uint32_t addr, uint32_t result,
+ unsigned int data_size);
+int serialice_handle_store(uint32_t addr, uint32_t val, unsigned int data_size);
+
+#endif
diff --git a/src/lib/serialice_host.c b/src/lib/serialice_host.c
new file mode 100644
index 0000000..4d318b2
--- /dev/null
+++ b/src/lib/serialice_host.c
@@ -0,0 +1,676 @@
+/*
+ * QEMU PC System Emulator
+ *
+ * Copyright (c) 2009 coresystems GmbH
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/* Indented with:
+ * gnuindent -npro -kr -i4 -nut -bap -sob -l80 -ss -ncs serialice.*
+ */
+
+/* System includes */
+#include <stdlib.h>
+#include <stdint.h>
+
+#include <string.h>
+#ifdef WIN32
+#include <windows.h>
+#include <conio.h>
+#else
+#include <termios.h>
+#endif
+
+#include <console/console.h>
+#include <serialice_host.h>
+#include <ulinux.h>
+
+const char *serialice_device = CONFIG_SERIALICE_HOST_DEV;
+
+/* Check that a character is in the valid range for the
+ given base
+*/
+
+//#warning "move this to string.h? got it from libpayload"
+
+#define UINT32_MAX 0xffffffffU
+static int _valid(char ch, int base)
+{
+ char end = (base > 9) ? '9' : '0' + (base - 1);
+
+ /* all bases will be some subset of the 0-9 range */
+
+ if (ch >= '0' && ch <= end)
+ return 1;
+
+ /* Bases > 11 will also have to match in the a-z range */
+
+ if (base > 11) {
+ if (tolower(ch) >= 'a' &&
+ tolower(ch) <= 'a' + (base - 11))
+ return 1;
+ }
+
+ return 0;
+}
+
+/* Return the "value" of the character in the given base */
+
+static int _offset(char ch, int base)
+{
+ if (ch >= '0' && ch <= '9')
+ return ch - '0';
+ else
+ return 10 + tolower(ch) - 'a';
+}
+
+/**
+ * Convert the initial portion of a string into an unsigned int
+ * @param ptr A pointer to the string to convert
+ * @param endptr A pointer to the unconverted part of the string
+ * @param base The base of the number to convert, or 0 for auto
+ * @return An unsigned integer representation of the string
+ */
+
+static unsigned long long strtoull(const char *ptr, char **endptr, unsigned int base)
+{
+ unsigned long long ret = 0;
+
+ if (endptr != NULL)
+ *endptr = (char *) ptr;
+
+ /* Purge whitespace */
+
+ for( ; *ptr && isspace(*ptr); ptr++);
+
+ if (!*ptr)
+ return 0;
+
+ /* Determine the base */
+
+ if (base == 0) {
+ if (ptr[0] == '0' && (ptr[1] == 'x' || ptr[1] == 'X'))
+ base = 16;
+ else if (ptr[0] == '0') {
+ base = 8;
+ ptr++;
+ }
+ else
+ base = 10;
+ }
+
+ /* Base 16 allows the 0x on front - so skip over it */
+
+ if (base == 16) {
+ if (ptr[0] == '0' && (ptr[1] == 'x' || ptr[1] == 'X'))
+ ptr += 2;
+ }
+
+ /* If the first character isn't valid, then don't
+ * bother */
+
+ if (!*ptr || !_valid(*ptr, base))
+ return 0;
+
+ for( ; *ptr && _valid(*ptr, base); ptr++)
+ ret = (ret * base) + _offset(*ptr, base);
+
+ if (endptr != NULL)
+ *endptr = (char *) ptr;
+
+ return ret;
+}
+
+static unsigned long strtoul(const char *ptr, char **endptr, unsigned int base)
+{
+ unsigned long long val = strtoull(ptr, endptr, base);
+ if (val > UINT32_MAX) return UINT32_MAX;
+ return val;
+}
+
+#define SERIALICE_DEBUG 3
+#define BUFFER_SIZE 1024
+typedef struct {
+#ifdef WIN32
+ HANDLE fd;
+#else
+ int fd;
+#endif
+ char *buffer;
+ char *command;
+} SerialICEState;
+
+/* Make it static, so it works from start */
+static char bb[BUFFER_SIZE];
+static char cc[BUFFER_SIZE];
+
+static SerialICEState ss = {
+ .buffer = bb,
+ .command = cc,
+ };
+
+static SerialICEState *s = &ss;
+int serialice_active = 0;
+
+#ifndef WIN32
+static struct termios options;
+#endif
+
+/* SerialICE output loggers */
+
+#define LOG_IO 0
+#define LOG_MEMORY 1
+#define LOG_READ 0
+#define LOG_WRITE 2
+// these two are separate
+#define LOG_QEMU 4
+#define LOG_TARGET 8
+
+static void serialice_log(int flags, uint32_t data, uint32_t addr, int size)
+{
+ if ((flags & LOG_WRITE) && (flags & LOG_MEMORY)) {
+ printk(BIOS_INFO, "MEM WRITE: [%08x] %08x size %d\n", addr, data, size);
+ } else if (!(flags & LOG_WRITE) && (flags & LOG_MEMORY)) {
+ printk(BIOS_INFO, "MEM READ: [%08x] %08x size %d\n", addr, data, size);
+ } else if ((flags & LOG_WRITE) && !(flags & LOG_MEMORY)) {
+ printk(BIOS_INFO, "IO WRITE: [%08x] %08x size %d\n", addr, data, size);
+ } else { // if (!(flags & LOG_WRITE) && !(flags & LOG_MEMORY))
+ printk(BIOS_INFO, "IO READ: [%08x] %08x size %d\n", addr, data, size);
+ }
+
+}
+
+static void serialice_msr_log(int flags, uint32_t addr, uint32_t hi,
+ uint32_t lo, int filtered)
+{
+
+ if (flags & LOG_WRITE) {
+ printk(BIOS_INFO, "MSR READ: [%08x] %08x%08x\n", addr,hi,lo);
+ } else { // if (!(flags & LOG_WRITE))
+ printk(BIOS_INFO, "MSR WRITE: [%08x] %08x%08x\n", addr,hi,lo);
+ }
+
+}
+
+static void serialice_cpuid_log(uint32_t eax, uint32_t ecx, cpuid_regs_t res,
+ int filtered)
+{
+
+ printk(BIOS_INFO, "CPUID todo\n");
+}
+
+// **************************************************************************
+// low level communication with the SerialICE shell (serial communication)
+
+static int serialice_read(SerialICEState * state, void *buf, size_t nbyte)
+{
+ int bytes_read = 0;
+
+ while (1) {
+#ifdef WIN32
+ int ret = 0;
+ ReadFile(state->fd, buf, nbyte - bytes_read, &ret, NULL);
+ if (!ret) {
+ break;
+ }
+#else
+ int ret = ulinux_read(state->fd, buf, nbyte - bytes_read);
+
+ if (ret == -1 && ulinux_errno == EINTR) {
+ continue;
+ }
+
+ if (ret == -1) {
+ break;
+ }
+#endif
+
+ bytes_read += ret;
+ buf += ret;
+
+ if (bytes_read >= (int)nbyte) {
+ break;
+ }
+ }
+
+ return bytes_read;
+}
+
+static int handshake_mode = 0;
+
+static int serialice_write(SerialICEState * state, const void *buf,
+ size_t nbyte)
+{
+ char *buffer = (char *)buf;
+ char c;
+ int i;
+ for (i = 0; i < (int)nbyte; i++) {
+#ifdef WIN32
+ int ret = 0;
+ while (ret == 0) {
+ WriteFile(state->fd, buffer + i, 1, &ret, NULL);
+ }
+ ret = 0;
+ while (ret == 0) {
+ ReadFile(state->fd, &c, 1, &ret, NULL);
+ }
+#else
+ while (ulinux_write(state->fd, buffer + i, 1) != 1) ;
+ while (ulinux_read(state->fd, &c, 1) != 1) ;
+#endif
+ if (c != buffer[i] && !handshake_mode) {
+ printk(BIOS_ERR, "Readback error! %x/%x\n", c, buffer[i]);
+ }
+ }
+
+ return nbyte;
+}
+
+static int serialice_wait_prompt(void)
+{
+ char buf[3];
+ int l;
+
+ l = serialice_read(s, buf, 3);
+
+ if (l == -1) {
+ perror("SerialICE: Could not read from target");
+ ulinux_exit(1);
+ }
+
+ while (buf[0] != '\n' || buf[1] != '>' || buf[2] != ' ') {
+ buf[0] = buf[1];
+ buf[1] = buf[2];
+ l = serialice_read(s, buf + 2, 1);
+ if (l == -1) {
+ perror("SerialICE: Could not read from target");
+ ulinux_exit(1);
+ }
+ }
+
+ return 0;
+}
+
+static void serialice_command(const char *command, int reply_len)
+{
+#if SERIALICE_DEBUG > 5
+ int i;
+#endif
+ int l;
+
+ if (!serialice_active) {
+ printk(BIOS_ERR, "SerialICE not ready yet (ignoring)\n");
+ return;
+ }
+
+ serialice_wait_prompt();
+
+ serialice_write(s, command, strlen(command));
+
+ memset(s->buffer, 0, reply_len + 1); // clear enough of the buffer
+
+ l = serialice_read(s, s->buffer, reply_len);
+
+ if (l == -1) {
+ perror("SerialICE: Could not read from target");
+ ulinux_exit(1);
+ }
+ // compensate for CR on the wire. Needed on Win32
+ if (s->buffer[0] == '\r') {
+ memmove(s->buffer, s->buffer + 1, reply_len);
+ serialice_read(s, s->buffer + reply_len - 1, 1);
+ }
+
+ if (l != reply_len) {
+ printk(BIOS_ERR, "SerialICE: command was not answered sufficiently: "
+ "(%d/%d bytes)\n'%s'\n", l, reply_len, s->buffer);
+ ulinux_exit(1);
+ }
+#if SERIALICE_DEBUG > 5
+ for (i = 0; i < reply_len; i++) {
+ printk(BIOS_ERR, "%02x ", s->buffer[i]);
+ }
+ printk(BIOS_ERR, "\n");
+#endif
+}
+
+// **************************************************************************
+// high level communication with the SerialICE shell
+
+static void serialice_get_version(void)
+{
+ int len = 0;
+ printk(BIOS_INFO, "SerialICE: Version.....: ");
+ serialice_command("*vi", 0);
+
+ memset(s->buffer, 0, BUFFER_SIZE);
+ serialice_read(s, s->buffer, 1);
+ serialice_read(s, s->buffer, 1);
+ while (s->buffer[len++] != '\n') {
+ serialice_read(s, s->buffer + len, 1);
+ }
+ s->buffer[len - 1] = '\0';
+
+ printk(BIOS_INFO, "%s\n", s->buffer);
+}
+
+static void serialice_get_mainboard(void)
+{
+}
+
+uint8_t serialice_inb(uint16_t port)
+{
+ uint8_t ret;
+
+ sprintf(s->command, "*ri%04x.b", port);
+ // command read back: "\n00" (3 characters)
+ serialice_command(s->command, 3);
+ ret = (uint8_t) strtoul(s->buffer + 1, (char **)NULL, 16);
+
+ serialice_log(LOG_READ | LOG_IO, ret, port, 1);
+
+ return ret;
+}
+
+uint16_t serialice_inw(uint16_t port)
+{
+ uint16_t ret;
+
+ sprintf(s->command, "*ri%04x.w", port);
+ // command read back: "\n0000" (5 characters)
+ serialice_command(s->command, 5);
+ ret = (uint16_t) strtoul(s->buffer + 1, (char **)NULL, 16);
+
+ serialice_log(LOG_READ | LOG_IO, ret, port, 2);
+
+ return ret;
+}
+
+uint32_t serialice_inl(uint16_t port)
+{
+ uint32_t ret;
+
+ sprintf(s->command, "*ri%04x.l", port);
+ // command read back: "\n00000000" (9 characters)
+ serialice_command(s->command, 9);
+ ret = (uint32_t) strtoul(s->buffer + 1, (char **)NULL, 16);
+
+ serialice_log(LOG_READ | LOG_IO, ret, port, 4);
+
+ return ret;
+}
+
+void serialice_outb(uint8_t data, uint16_t port)
+{
+ serialice_log(LOG_WRITE | LOG_IO, data, port, 1);
+
+ sprintf(s->command, "*wi%04x.b=%02x", port, data);
+ serialice_command(s->command, 0);
+}
+
+void serialice_outw(uint16_t data, uint16_t port)
+{
+ serialice_log(LOG_WRITE | LOG_IO, data, port, 2);
+
+ sprintf(s->command, "*wi%04x.w=%04x", port, data);
+ serialice_command(s->command, 0);
+}
+
+void serialice_outl(uint32_t data, uint16_t port)
+{
+ serialice_log(LOG_WRITE | LOG_IO, data, port, 4);
+
+ sprintf(s->command, "*wi%04x.l=%08x", port, data);
+ serialice_command(s->command, 0);
+}
+
+uint8_t serialice_readb(uint32_t addr)
+{
+ uint8_t ret;
+ sprintf(s->command, "*rm%08x.b", addr);
+ // command read back: "\n00" (3 characters)
+ serialice_command(s->command, 3);
+ ret = (uint8_t) strtoul(s->buffer + 1, (char **)NULL, 16);
+ serialice_log(LOG_READ | LOG_MEMORY, ret, addr, 1);
+
+ return ret;
+}
+
+uint16_t serialice_readw(uint32_t addr)
+{
+ uint16_t ret;
+ sprintf(s->command, "*rm%08x.w", addr);
+ // command read back: "\n0000" (5 characters)
+ serialice_command(s->command, 5);
+ ret = (uint16_t) strtoul(s->buffer + 1, (char **)NULL, 16);
+ serialice_log(LOG_READ | LOG_MEMORY, ret, addr, 2);
+
+ return ret;
+}
+
+uint32_t serialice_readl(uint32_t addr)
+{
+ uint32_t ret;
+ sprintf(s->command, "*rm%08x.l", addr);
+ // command read back: "\n00000000" (9 characters)
+ serialice_command(s->command, 9);
+ ret = (uint32_t) strtoul(s->buffer + 1, (char **)NULL, 16);
+ serialice_log(LOG_READ | LOG_MEMORY, ret, addr, 4);
+
+ return ret;
+}
+
+void serialice_writeb(uint8_t data, uint32_t addr)
+{
+ serialice_log(LOG_WRITE | LOG_MEMORY, data, addr, 1);
+ sprintf(s->command, "*wm%08x.b=%02x", addr, data);
+ serialice_command(s->command, 0);
+}
+
+void serialice_writew(uint16_t data, uint32_t addr)
+{
+ serialice_log(LOG_WRITE | LOG_MEMORY, data, addr, 2);
+ sprintf(s->command, "*wm%08x.w=%04x", addr, data);
+ serialice_command(s->command, 0);
+}
+
+void serialice_writel(uint32_t data, uint32_t addr)
+{
+ serialice_log(LOG_WRITE | LOG_MEMORY, data, addr, 4);
+ sprintf(s->command, "*wm%08x.l=%08x", addr, data);
+ serialice_command(s->command, 0);
+}
+
+uint64_t serialice_rdmsr(uint32_t addr, uint32_t key)
+{
+ uint32_t hi, lo;
+ uint64_t ret;
+ int filtered = 0;
+
+ sprintf(s->command, "*rc%08x.%08x", addr, key);
+
+ // command read back: "\n00000000.00000000" (18 characters)
+ serialice_command(s->command, 18);
+
+ s->buffer[9] = 0; // . -> \0
+ hi = (uint32_t) strtoul(s->buffer + 1, (char **)NULL, 16);
+ lo = (uint32_t) strtoul(s->buffer + 10, (char **)NULL, 16);
+
+ ret = hi;
+ ret <<= 32;
+ ret |= lo;
+
+ serialice_msr_log(LOG_READ, addr, hi, lo, filtered);
+
+ return ret;
+}
+
+void serialice_wrmsr(uint64_t data, uint32_t addr, uint32_t key)
+{
+ uint32_t hi, lo;
+ int filtered = 0;
+
+ hi = (data >> 32);
+ lo = (data & 0xffffffff);
+
+ if (!filtered) {
+ sprintf(s->command, "*wc%08x.%08x=%08x.%08x", addr, key, hi, lo);
+ serialice_command(s->command, 0);
+ }
+
+ serialice_msr_log(LOG_WRITE, addr, hi, lo, filtered);
+}
+
+cpuid_regs_t serialice_cpuid(uint32_t eax, uint32_t ecx)
+{
+ cpuid_regs_t ret;
+
+ ret.eax = eax;
+ ret.ebx = 0; // either set by filter or by target
+ ret.ecx = ecx;
+ ret.edx = 0; // either set by filter or by target
+
+ sprintf(s->command, "*ci%08x.%08x", eax, ecx);
+
+ // command read back: "\n000006f2.00000000.00001234.12340324"
+ // (36 characters)
+ serialice_command(s->command, 36);
+
+ s->buffer[9] = 0; // . -> \0
+ s->buffer[18] = 0; // . -> \0
+ s->buffer[27] = 0; // . -> \0
+ ret.eax = (uint32_t) strtoul(s->buffer + 1, (char **)NULL, 16);
+ ret.ebx = (uint32_t) strtoul(s->buffer + 10, (char **)NULL, 16);
+ ret.ecx = (uint32_t) strtoul(s->buffer + 19, (char **)NULL, 16);
+ ret.edx = (uint32_t) strtoul(s->buffer + 28, (char **)NULL, 16);
+
+ serialice_cpuid_log(eax, ecx, ret, 0);
+
+ return ret;
+}
+
+// **************************************************************************
+// initialization and exit
+
+void serialice_init(void)
+{
+ printk(BIOS_INFO, "SerialICE: Open connection to target hardware...\n");
+
+ if (serialice_device == NULL) {
+ printk(BIOS_INFO, "You need to specify a serial device to use SerialICE.\n");
+ ulinux_exit(1);
+ }
+#ifdef WIN32
+ s->fd = CreateFile(serialice_device, GENERIC_READ | GENERIC_WRITE,
+ 0, NULL, OPEN_EXISTING, 0, NULL);
+
+ if (s->fd == INVALID_HANDLE_VALUE) {
+ perror("SerialICE: Could not connect to target TTY");
+ ulinux_exit(1);
+ }
+
+ DCB dcb;
+ if (!GetCommState(s->fd, &dcb)) {
+ perror("SerialICE: Could not load config for target TTY");
+ ulinux_exit(1);
+ }
+
+ dcb.BaudRate = CBR_115200;
+ dcb.ByteSize = 8;
+ dcb.Parity = NOPARITY;
+ dcb.StopBits = ONESTOPBIT;
+
+ if (!SetCommState(s->fd, &dcb)) {
+ perror("SerialICE: Could not store config for target TTY");
+ ulinux_exit(1);
+ }
+#else
+ s->fd = ulinux_open(serialice_device, O_RDWR | O_NOCTTY | O_NONBLOCK);
+
+ if (s->fd == -1) {
+ perror("SerialICE: Could not connect to target TTY");
+ ulinux_exit(1);
+ }
+
+ if (ulinux_ioctl(s->fd, TIOCEXCL) == -1) {
+ perror("SerialICE: TTY not exclusively available");
+ ulinux_exit(1);
+ }
+
+ if (ulinux_fcntl(s->fd, F_SETFL, 0) == -1) {
+ perror("SerialICE: Could not switch to blocking I/O");
+ ulinux_exit(1);
+ }
+
+ if (ulinux_tcgetattr(s->fd, &options) == -1) {
+ perror("SerialICE: Could not get TTY attributes");
+ ulinux_exit(1);
+ }
+
+ ulinux_cfsetispeed(&options, B115200);
+ ulinux_cfsetospeed(&options, B115200);
+
+ /* set raw input, 1 second timeout */
+ options.c_cflag |= (CLOCAL | CREAD);
+ options.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
+ options.c_oflag &= ~OPOST;
+ options.c_iflag |= IGNCR;
+ options.c_cc[VMIN] = 0;
+ options.c_cc[VTIME] = 100;
+
+ ulinux_tcsetattr(s->fd, TCSANOW, &options);
+
+ ulinux_tcflush(s->fd, TCIOFLUSH);
+#endif
+
+ s->buffer = bb;
+ s->command = cc;
+
+ printk(BIOS_INFO, "SerialICE: Waiting for handshake with target... ");
+
+ handshake_mode = 1; // Readback errors are to be expected in this phase.
+
+ /* Trigger a prompt */
+ serialice_write(s, "\n\n\n\n", 4);
+ serialice_write(s, "\n\n\n\n", 4);
+
+ /* ... and wait for it to appear */
+ if (serialice_wait_prompt() == 0) {
+ printk(BIOS_INFO, "target alive!\n");
+ serialice_active = 1;
+ } else {
+ printk(BIOS_INFO, "target not ok!\n");
+ ulinux_exit(1);
+ }
+
+ /* Each serialice_command() waits for a prompt, so trigger one for the
+ * first command, as we consumed the last one for the handshake
+ */
+ serialice_write(s, "@", 1);
+
+ handshake_mode = 0; // from now on, warn about readback errors.
+
+ serialice_get_version();
+
+ serialice_get_mainboard();
+
+ /* Let the rest of Qemu know we're alive */
+}
+
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