diff options
| -rw-r--r-- | src/include/cbmem.h | 1 | ||||
| -rw-r--r-- | src/include/timestamp.h | 46 | ||||
| -rw-r--r-- | src/lib/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/lib/cbmem.c | 17 | ||||
| -rw-r--r-- | src/lib/timestamp.c | 74 |
5 files changed, 140 insertions, 0 deletions
diff --git a/src/include/cbmem.h b/src/include/cbmem.h index a681c36ea8..c3f10efee1 100644 --- a/src/include/cbmem.h +++ b/src/include/cbmem.h @@ -41,6 +41,7 @@ extern uint64_t high_tables_base, high_tables_size; #define CBMEM_ID_MPTABLE 0x534d5054 #define CBMEM_ID_RESUME 0x5245534d #define CBMEM_ID_SMBIOS 0x534d4254 +#define CBMEM_ID_TIMESTAMP 0x54494d45 #define CBMEM_ID_NONE 0x00000000 int cbmem_initialize(void); diff --git a/src/include/timestamp.h b/src/include/timestamp.h new file mode 100644 index 0000000000..cfa06e29fc --- /dev/null +++ b/src/include/timestamp.h @@ -0,0 +1,46 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. + * + * 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; version 2 of the License. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA + */ + +#ifndef __TIMESTAMP_H__ +#define __TIMESTAMP_H__ + +#include <cpu/x86/tsc.h> + +struct timestamp_entry { + uint32_t entry_id; + uint64_t entry_stamp; +} __attribute__((packed)); + +struct timestamp_table { + uint64_t base_time; + uint32_t max_entries; + uint32_t num_entries; + struct timestamp_entry entries[0]; /* Variable number of entries */ +} __attribute__((packed)); + +enum timestamp_id { + TS_BEFORE_INITRAM = 1, + TS_AFTER_INITRAM = 2, +}; + +void timestamp_init(tsc_t base); +void timestamp_add(enum timestamp_id id, tsc_t ts_time); +void timestamp_add_now(enum timestamp_id id); + +#endif diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc index e0e5e75060..db640dc005 100644 --- a/src/lib/Makefile.inc +++ b/src/lib/Makefile.inc @@ -14,6 +14,7 @@ romstage-$(CONFIG_CONSOLE_SERIAL8250MEM) += uart8250mem.c romstage-$(CONFIG_CONSOLE_NE2K) += ne2k.c romstage-$(CONFIG_CONSOLE_NE2K) += compute_ip_checksum.c romstage-$(CONFIG_USBDEBUG) += usbdebug.c +romstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c ramstage-y += memset.c ramstage-y += memchr.c @@ -36,6 +37,7 @@ ramstage-$(CONFIG_CONSOLE_SERIAL8250MEM) += uart8250mem.c ramstage-$(CONFIG_USBDEBUG) += usbdebug.c ramstage-$(CONFIG_BOOTSPLASH) += jpeg.c ramstage-$(CONFIG_TRACE) += trace.c +ramstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c driver-$(CONFIG_CONSOLE_NE2K) += ne2k.c diff --git a/src/lib/cbmem.c b/src/lib/cbmem.c index f5c3d3a811..659784079b 100644 --- a/src/lib/cbmem.c +++ b/src/lib/cbmem.c @@ -118,6 +118,22 @@ void *cbmem_add(u32 id, u64 size) { struct cbmem_entry *cbmem_toc; int i; + void *p; + + /* + * This could be a restart, check if the section is there already. It + * is remotely possible that the dram contents persisted over the + * bootloader upgrade AND the same section now needs more room, but + * this is quite a remote possibility and it is ignored here. + */ + p = cbmem_find(id); + if (p) { + printk(BIOS_NOTICE, + "CBMEM section %x: using existing location at %p.\n", + id, p); + return p; + } + cbmem_toc = get_cbmem_toc(); if (cbmem_toc == NULL) { @@ -240,6 +256,7 @@ void cbmem_list(void) case CBMEM_ID_MPTABLE: printk(BIOS_DEBUG, "SMP TABLE "); break; case CBMEM_ID_RESUME: printk(BIOS_DEBUG, "ACPI RESUME"); break; case CBMEM_ID_SMBIOS: printk(BIOS_DEBUG, "SMBIOS "); break; + case CBMEM_ID_TIMESTAMP: printk(BIOS_DEBUG, "TIME STAMP "); break; default: printk(BIOS_DEBUG, "%08x ", cbmem_toc[i].id); } printk(BIOS_DEBUG, "%08llx ", cbmem_toc[i].base); diff --git a/src/lib/timestamp.c b/src/lib/timestamp.c new file mode 100644 index 0000000000..bbb8197dca --- /dev/null +++ b/src/lib/timestamp.c @@ -0,0 +1,74 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. + * + * 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; version 2 of the License. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA + */ + +#include <stdint.h> +#include <console/console.h> +#include <cbmem.h> +#include <timestamp.h> + +#define MAX_TIMESTAMPS 30 + +#ifndef __PRE_RAM__ +static struct timestamp_table* ts_table; +#endif + +static uint64_t tsc_to_uint64(tsc_t tstamp) +{ + return (((uint64_t)tstamp.hi) << 32) + tstamp.lo; +} + +void timestamp_init(tsc_t base) +{ + struct timestamp_table* tst; + + tst = cbmem_add(CBMEM_ID_TIMESTAMP, + sizeof(struct timestamp_table) + + MAX_TIMESTAMPS * sizeof(struct timestamp_entry)); + + if (!tst) { + printk(BIOS_ERR, "ERROR: failed to allocate timstamp table\n"); + return; + } + + tst->base_time = tsc_to_uint64(base); + tst->max_entries = MAX_TIMESTAMPS; + tst->num_entries = 0; +} + +void timestamp_add(enum timestamp_id id, tsc_t ts_time) +{ + struct timestamp_entry *tse; +#ifdef __PRE_RAM__ + struct timestamp_table *ts_table = cbmem_find(CBMEM_ID_TIMESTAMP); +#else + if (!ts_table) + ts_table = cbmem_find(CBMEM_ID_TIMESTAMP); +#endif + if (!ts_table || (ts_table->num_entries == ts_table->max_entries)) + return; + + tse = &ts_table->entries[ts_table->num_entries++]; + tse->entry_id = id; + tse->entry_stamp = tsc_to_uint64(ts_time) - ts_table->base_time; +} + +void timestamp_add_now(enum timestamp_id id) +{ + timestamp_add(id, rdtsc()); +} |