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-rw-r--r--src/include/cbmem.h1
-rw-r--r--src/include/timestamp.h46
-rw-r--r--src/lib/Makefile.inc2
-rw-r--r--src/lib/cbmem.c17
-rw-r--r--src/lib/timestamp.c74
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());
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 05:33:09 +0000