diff options
Diffstat (limited to 'common/port80.c')
| -rw-r--r-- | common/port80.c | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/common/port80.c b/common/port80.c deleted file mode 100644 index ab1f112112..0000000000 --- a/common/port80.c +++ /dev/null @@ -1,214 +0,0 @@ -/* Copyright 2012 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* Port 80 module for Chrome EC */ - -#include "common.h" -#include "console.h" -#include "display_7seg.h" -#include "hooks.h" -#include "host_command.h" -#include "port80.h" -#include "task.h" -#include "timer.h" -#include "util.h" - -#define CPRINTF(format, args...) cprintf(CC_PORT80, format, ## args) - -#ifdef CONFIG_PORT80_4_BYTE -typedef uint32_t port80_code_t; -#else -typedef uint16_t port80_code_t; -#endif -static port80_code_t __bss_slow history[CONFIG_PORT80_HISTORY_LEN]; -static int __bss_slow writes; /* Number of port 80 writes so far */ -static uint16_t last_boot; /* Last code from previous boot */ -static int __bss_slow scroll; - -#ifdef CONFIG_BRINGUP -#undef CONFIG_PORT80_PRINT_IN_INT -#define CONFIG_PORT80_PRINT_IN_INT 1 -#endif - -static int print_in_int = CONFIG_PORT80_PRINT_IN_INT; - -static void port80_dump_buffer(void); -DECLARE_DEFERRED(port80_dump_buffer); - -void port_80_write(int data) -{ - /* - * By default print_in_int is disabled if: - * 1. CONFIG_BRINGUP is not defined - * 2. CONFIG_PRINT_IN_INT is set to disable by default - * - * This is done to prevent printing in interrupt context. Boards can - * enable this by either defining CONFIG_BRINGUP or enabling - * CONFIG_PRINT_IN_INT in board configs. - * - * If at runtime, print_in_int is disabled, then this function will - * schedule a deferred call 4 seconds after the last port80 write to - * dump the current port80 buffer to EC console. This is to allow - * developers to help debug BIOS progress by tracing port80 messages. - */ - if (print_in_int) - CPRINTF("%c[%pT Port 80: 0x%02x]", - scroll ? '\n' : '\r', PRINTF_TIMESTAMP_NOW, data); - - hook_call_deferred(&port80_dump_buffer_data, 4 * SECOND); - - /* Save current port80 code if system is resetting */ - if (data == PORT_80_EVENT_RESET && writes) { - port80_code_t prev = history[(writes-1) % ARRAY_SIZE(history)]; - - /* - * last_boot only reports 8-bit codes. - * Ignore special event codes and 4-byte codes. - */ - if (prev < 0x100) - last_boot = prev; - } - - history[writes % ARRAY_SIZE(history)] = data; - writes++; -} - -static void port80_dump_buffer(void) -{ - int printed = 0; - int i; - int head, tail; - int last_e = 0; - - /* - * Print the port 80 writes so far, clipped to the length of our - * history buffer. - * - * Technically, if a port 80 write comes in while we're printing this, - * we could print an incorrect history. Probably not worth the - * complexity to work around that. - */ - head = writes; - if (head > ARRAY_SIZE(history)) - tail = head - ARRAY_SIZE(history); - else - tail = 0; - - ccputs("Port 80 writes:"); - for (i = tail; i < head; i++) { - int e = history[i % ARRAY_SIZE(history)]; - switch (e) { - case PORT_80_EVENT_RESUME: - ccprintf("\n(S3->S0)"); - printed = 0; - break; - case PORT_80_EVENT_RESET: - ccprintf("\n(RESET)"); - printed = 0; - break; - default: - if (!(printed++ % 20)) { - ccputs("\n "); - cflush(); - } - ccprintf(" %02x", e); - last_e = e; - } - } - ccputs(" <--new\n"); - - /* Displaying last port80 msg on 7-segment if it is enabled */ - if (IS_ENABLED(CONFIG_SEVEN_SEG_DISPLAY) && last_e) - display_7seg_write(SEVEN_SEG_PORT80_DISPLAY, last_e); -} - -/*****************************************************************************/ -/* Console commands */ - -static int command_port80(int argc, char **argv) -{ - /* - * 'port80 scroll' toggles whether port 80 output begins with a newline - * (scrolling) or CR (non-scrolling). - */ - if (argc > 1) { - if (!strcasecmp(argv[1], "scroll")) { - scroll = !scroll; - ccprintf("scroll %sabled\n", scroll ? "en" : "dis"); - return EC_SUCCESS; - } else if (!strcasecmp(argv[1], "intprint")) { - print_in_int = !print_in_int; - ccprintf("printing in interrupt %sabled\n", - print_in_int ? "en" : "dis"); - return EC_SUCCESS; - } else if (!strcasecmp(argv[1], "flush")) { - writes = 0; - return EC_SUCCESS; - } else { - return EC_ERROR_PARAM1; - } - } - - port80_dump_buffer(); - return EC_SUCCESS; -} -DECLARE_CONSOLE_COMMAND(port80, command_port80, - "[scroll | intprint | flush]", - "Print port80 writes or toggle port80 scrolling"); - -enum ec_status port80_last_boot(struct host_cmd_handler_args *args) -{ - struct ec_response_port80_last_boot *r = args->response; - - args->response_size = sizeof(*r); - r->code = last_boot; - - return EC_RES_SUCCESS; -} - -enum ec_status port80_command_read(struct host_cmd_handler_args *args) -{ - const struct ec_params_port80_read *p = args->params; - uint32_t offset = p->read_buffer.offset; - uint32_t entries = p->read_buffer.num_entries; - int i; - struct ec_response_port80_read *rsp = args->response; - - if (args->version == 0) - return port80_last_boot(args); - - if (p->subcmd == EC_PORT80_GET_INFO) { - rsp->get_info.writes = writes; - rsp->get_info.history_size = ARRAY_SIZE(history); - args->response_size = sizeof(rsp->get_info); - return EC_RES_SUCCESS; - } else if (p->subcmd == EC_PORT80_READ_BUFFER) { - /* do not allow bad offset or size */ - if (offset >= ARRAY_SIZE(history) || entries == 0 || - entries > args->response_max) - return EC_RES_INVALID_PARAM; - - for (i = 0; i < entries; i++) { - uint16_t e = history[(i + offset) % - ARRAY_SIZE(history)]; - rsp->data.codes[i] = e; - } - - args->response_size = entries*sizeof(uint16_t); - return EC_RES_SUCCESS; - } - - return EC_RES_INVALID_PARAM; -} -DECLARE_HOST_COMMAND(EC_CMD_PORT80_READ, - port80_command_read, - EC_VER_MASK(0) | EC_VER_MASK(1)); - -static void port80_log_resume(void) -{ - /* Store port 80 event so we know where resume happened */ - port_80_write(PORT_80_EVENT_RESUME); -} -DECLARE_HOOK(HOOK_CHIPSET_RESUME, port80_log_resume, HOOK_PRIO_DEFAULT); |