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-rw-r--r--src/lib/Config.lb6
-rw-r--r--src/lib/Makefile.inc1
-rw-r--r--src/lib/cbmem.c239
3 files changed, 244 insertions, 2 deletions
diff --git a/src/lib/Config.lb b/src/lib/Config.lb
index 7f9a5b5e5e..7af325d29d 100644
--- a/src/lib/Config.lb
+++ b/src/lib/Config.lb
@@ -18,6 +18,9 @@ object fallback_boot.o
object compute_ip_checksum.o
object version.o
object gcc.o
+object cbfs.o
+object lzma.o
+object cbmem.o
# Force version.o to recompile every time
makedefine .PHONY : version.o
@@ -27,5 +30,4 @@ initobject memset.o
initobject memcpy.o
initobject memcmp.o
-object cbfs.o
-object lzma.o
+
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index ebf6fd2a8d..b94906b30f 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -13,6 +13,7 @@ obj-y += cbfs.o
obj-y += lzma.o
#obj-y += lzmadecode.o
obj-y += gcc.o
+obj-y += cbmem.o
initobj-y += uart8250.o
initobj-y += memset.o
diff --git a/src/lib/cbmem.c b/src/lib/cbmem.c
new file mode 100644
index 0000000000..0ed4bc43ea
--- /dev/null
+++ b/src/lib/cbmem.c
@@ -0,0 +1,239 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2009 coresystems GmbH
+ *
+ * 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 <types.h>
+#include <string.h>
+#include <cbmem.h>
+#include <console/console.h>
+
+#if 1
+#define debug(x...) printk_debug(x)
+#else
+#define debug(x...)
+#endif
+
+// The CBMEM TOC reserves 512 bytes to keep
+// the other entries somewhat aligned.
+// Increase if MAX_CBMEM_ENTRIES exceeds 21
+#define CBMEM_TOC_RESERVED 512
+#define MAX_CBMEM_ENTRIES 16
+#define CBMEM_MAGIC 0x434f5245
+
+static void *cbmem_base;
+static int cbmem_size;
+
+struct cbmem_entry {
+ u32 magic;
+ u32 id;
+ u64 base;
+ u64 size;
+} __attribute__((packed));
+
+#ifndef __ROMCC__
+struct cbmem_entry *bss_cbmem_toc;
+#endif
+
+/**
+ * cbmem is a simple mechanism to do some kind of book keeping of the coreboot
+ * high tables memory. This is a small amount of memory which is "stolen" from
+ * the system memory for coreboot purposes. Usually this memory is used for
+ * - the coreboot table
+ * - legacy tables (PIRQ, MP table)
+ * - ACPI tables
+ * - suspend/resume backup memory
+ */
+
+void cbmem_init(u64 baseaddr, u64 size)
+{
+ struct cbmem_entry *cbmem_toc;
+ cbmem_toc = (struct cbmem_entry *)(unsigned long)baseaddr;
+
+#ifndef __ROMCC__
+ bss_cbmem_toc = cbmem_toc;
+#endif
+
+ debug("Initializing CBMEM area to 0x%llx (%lld bytes)\n", baseaddr, size);
+
+ if (size < (64 * 1024)) {
+ debug("Increase CBMEM size!!\n");
+ for (;;) ;
+ }
+
+ memset(cbmem_toc, 0, CBMEM_TOC_RESERVED);
+
+ cbmem_toc[0] = (struct cbmem_entry) {
+ .magic = CBMEM_MAGIC,
+ .id = CBMEM_ID_FREESPACE,
+ .base = baseaddr + CBMEM_TOC_RESERVED,
+ .size = size - CBMEM_TOC_RESERVED
+ };
+}
+
+int cbmem_reinit(u64 baseaddr)
+{
+ struct cbmem_entry *cbmem_toc;
+ cbmem_toc = (struct cbmem_entry *)(unsigned long)baseaddr;
+
+ debug("Re-Initializing CBMEM area to 0x%lx\n", baseaddr);
+#ifndef __ROMCC__
+ bss_cbmem_toc = cbmem_toc;
+#endif
+
+ return (cbmem_toc[0].magic == CBMEM_MAGIC);
+}
+
+void *cbmem_add(u32 id, u64 size)
+{
+ struct cbmem_entry *cbmem_toc;
+ int i;
+#ifdef __ROMCC__
+ cbmem_toc = (struct cbmem_entry *)(get_top_of_ram() - HIGH_MEMORY_SIZE);
+#else
+ cbmem_toc = bss_cbmem_toc;
+#endif
+
+ if (cbmem_toc == NULL) {
+ return NULL;
+ }
+
+ if (cbmem_toc[0].magic != CBMEM_MAGIC) {
+ printk_err("ERROR: CBMEM was not initialized yet.\n");
+ return NULL;
+ }
+
+ /* Will the entry fit at all? */
+ if (size > cbmem_toc[0].size) {
+ printk_err("ERROR: Not enough memory for table %x\n", id);
+ return NULL;
+ }
+
+ /* Align size to 512 byte blocks */
+
+ size = ALIGN(size, 512) < cbmem_toc[0].size ?
+ ALIGN(size, 512) : cbmem_toc[0].size;
+
+ /* Now look for the first free/usable TOC entry */
+ for (i = 0; i < MAX_CBMEM_ENTRIES; i++) {
+ if (cbmem_toc[i].id == CBMEM_ID_NONE)
+ break;
+ }
+
+ if (i >= MAX_CBMEM_ENTRIES) {
+ printk_err("ERROR: No more CBMEM entries available.\n");
+ return NULL;
+ }
+
+ debug("Adding CBMEM entry as no. %d\n", i);
+
+ cbmem_toc[i] = (struct cbmem_entry) {
+ .magic = CBMEM_MAGIC,
+ .id = id,
+ .base = cbmem_toc[0].base,
+ .size = size
+ };
+
+ cbmem_toc[0].base += size;
+ cbmem_toc[0].size -= size;
+
+ return (void *)cbmem_toc[i].base;
+}
+
+void *cbmem_find(u32 id)
+{
+ struct cbmem_entry *cbmem_toc;
+ int i;
+#ifdef __ROMCC__
+ cbmem_toc = (struct cbmem_entry *)(get_top_of_ram() - HIGH_MEMORY_SIZE);
+#else
+ cbmem_toc = bss_cbmem_toc;
+#endif
+
+ if (cbmem_toc == NULL)
+ return NULL;
+
+ for (i = 0; i < MAX_CBMEM_ENTRIES; i++) {
+ if (cbmem_toc[i].id == id)
+ return (void *)(unsigned long)cbmem_toc[i].base;
+ }
+
+ return (void *)NULL;
+}
+
+#ifndef __ROMCC__
+void cbmem_arch_init(void);
+#if CONFIG_HAVE_ACPI_RESUME
+extern u8 acpi_slp_type;
+#endif
+extern uint64_t high_tables_base, high_tables_size;
+
+void cbmem_initialize(void)
+{
+#if CONFIG_HAVE_ACPI_RESUME
+ if (acpi_slp_type == 3) {
+ if (!cbmem_reinit(high_tables_base)) {
+ /* Something went wrong, our high memory area got wiped */
+ acpi_slp_type == 0;
+ cbmem_init(high_tables_base, high_tables_size);
+ }
+ } else {
+ cbmem_init(high_tables_base, high_tables_size);
+ }
+#else
+ cbmem_init(high_tables_base, high_tables_size);
+#endif
+ cbmem_arch_init();
+}
+
+#ifndef __ROMCC__
+void cbmem_list(void)
+{
+ struct cbmem_entry *cbmem_toc;
+ int i;
+#ifdef __ROMCC__
+ cbmem_toc = (struct cbmem_entry *)(get_top_of_ram() - HIGH_MEMORY_SIZE);
+#else
+ cbmem_toc = bss_cbmem_toc;
+#endif
+
+ if (cbmem_toc == NULL)
+ return NULL;
+
+ for (i = 0; i < MAX_CBMEM_ENTRIES; i++) {
+
+ if (cbmem_toc[i].magic != CBMEM_MAGIC)
+ continue;
+ printk_debug("%2d. ", i);
+ switch (cbmem_toc[i].id) {
+ case CBMEM_ID_FREESPACE: printk_debug("FREE SPACE "); break;
+ case CBMEM_ID_GDT: printk_debug("GDT "); break;
+ case CBMEM_ID_ACPI: printk_debug("ACPI "); break;
+ case CBMEM_ID_CBTABLE: printk_debug("COREBOOT "); break;
+ case CBMEM_ID_PIRQ: printk_debug("IRQ TABLE "); break;
+ case CBMEM_ID_MPTABLE: printk_debug("SMP TABLE "); break;
+ case CBMEM_ID_RESUME: printk_debug("ACPI RESUME"); break;
+ default: printk_debug("%08x ", cbmem_toc[i].id);
+ }
+ printk_debug("%08llx ", cbmem_toc[i].base);
+ printk_debug("%08llx\n", cbmem_toc[i].size);
+ }
+}
+#endif
+
+#endif
+