#include <string.h>
#include <cbmem.h>
#include <console/console.h>
+#if CONFIG_HAVE_ACPI_RESUME && !defined(__PRE_RAM__)
+#include <arch/acpi.h>
+#endif
// The CBMEM TOC reserves 512 bytes to keep
// the other entries somewhat aligned.
{
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) {
return (void *)NULL;
}
-#ifndef __PRE_RAM__
-#if CONFIG_HAVE_ACPI_RESUME
-extern u8 acpi_slp_type;
+#if CONFIG_EARLY_CBMEM_INIT || !defined(__PRE_RAM__)
+/* Returns True if it was not intialized before. */
+int cbmem_initialize(void)
+{
+ int rv = 0;
+
+#ifdef __PRE_RAM__
+ extern unsigned long get_top_of_ram(void);
+ uint64_t high_tables_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
+ uint64_t high_tables_size = HIGH_MEMORY_SIZE;
#endif
-void cbmem_initialize(void)
-{
-#if CONFIG_HAVE_ACPI_RESUME
- printk(BIOS_DEBUG, "%s: acpi_slp_type=%d\n", __func__, acpi_slp_type);
- if (acpi_slp_type == 3 || acpi_slp_type == 2) {
- if (!cbmem_reinit(high_tables_base)) {
- printk(BIOS_DEBUG, "cbmem_reinit failed\n");
- /* Something went wrong, our high memory area got wiped */
+ /* We expect the romstage to always initialize it. */
+ if (!cbmem_reinit(high_tables_base)) {
+#if CONFIG_HAVE_ACPI_RESUME && !defined(__PRE_RAM__)
+ /* Something went wrong, our high memory area got wiped */
+ if (acpi_slp_type == 3 || acpi_slp_type == 2)
acpi_slp_type = 0;
- cbmem_init(high_tables_base, high_tables_size);
- }
- } else {
+#endif
cbmem_init(high_tables_base, high_tables_size);
+ rv = 1;
}
-#else
- cbmem_init(high_tables_base, high_tables_size);
-#endif
+#ifndef __PRE_RAM__
cbmem_arch_init();
+#endif
+ return rv;
}
+#endif
#ifndef __PRE_RAM__
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;
+ case CBMEM_ID_CONSOLE: printk(BIOS_DEBUG, "CONSOLE "); break;
default: printk(BIOS_DEBUG, "%08x ", cbmem_toc[i].id);
}
printk(BIOS_DEBUG, "%08llx ", cbmem_toc[i].base);
}
#endif
-#endif