Cristian Măgherușan-Stanciu (cristi.magherusan@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/1094
-gerrit
commit f46a33146b9f8ffe4394bb685f27751da36ee9a9 Author: Rudolf Marek r.marek@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?
also changed copyright header for coreboot and fixed indentation by running the indent command listed at the top of the file.
Change-Id: If71737e6866c5c4dd62b9c26c676686ebfd20bcc Signed-off-by: Rudolf Marek r.marek@assembler.cz --- src/include/serialice_host.h | 67 +++++ src/lib/serialice_host.c | 677 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 744 insertions(+)
diff --git a/src/include/serialice_host.h b/src/include/serialice_host.h new file mode 100644 index 0000000..26438b6 --- /dev/null +++ b/src/include/serialice_host.h @@ -0,0 +1,67 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (c) 2009 coresystems GmbH + * Copyright (c) 2012 Rudolf Marek - imported it from SerialICE/QEMU + * + * 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..280537e --- /dev/null +++ b/src/lib/serialice_host.c @@ -0,0 +1,677 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (c) 2009 coresystems GmbH + * Copyright (c) 2012 Rudolf Marek - imported it from SerialICE/QEMU + * + * 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: + * indent -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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Cristian Măgherușan-Stanciu