+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <handoff.h>
+#include <init.h>
#include <asm/fsp/fsp_support.h>
#include <asm/e820.h>
+#include <asm/mrccache.h>
+#include <asm/mtrr.h>
#include <asm/post.h>
DECLARE_GLOBAL_DATA_PTR;
-int dram_init(void)
+int fsp_scan_for_ram_size(void)
{
phys_size_t ram_size = 0;
const struct hob_header *hdr;
if (hdr->type == HOB_TYPE_RES_DESC) {
res_desc = (struct hob_res_desc *)hdr;
if (res_desc->type == RES_SYS_MEM ||
- res_desc->type == RES_MEM_RESERVED) {
+ res_desc->type == RES_MEM_RESERVED)
ram_size += res_desc->len;
- }
}
hdr = get_next_hob(hdr);
}
post_code(POST_DRAM);
return 0;
-}
+};
-void dram_init_banksize(void)
+int dram_init_banksize(void)
{
+ const struct hob_header *hdr;
+ struct hob_res_desc *res_desc;
+ phys_addr_t low_end;
+ uint bank;
+
+ if (!ll_boot_init()) {
+ gd->bd->bi_dram[0].start = 0;
+ gd->bd->bi_dram[0].size = gd->ram_size;
+
+ mtrr_add_request(MTRR_TYPE_WRBACK, 0, gd->ram_size);
+ return 0;
+ }
+
+ low_end = 0;
+ for (bank = 1, hdr = gd->arch.hob_list;
+ bank < CONFIG_NR_DRAM_BANKS && !end_of_hob(hdr);
+ hdr = get_next_hob(hdr)) {
+ if (hdr->type != HOB_TYPE_RES_DESC)
+ continue;
+ res_desc = (struct hob_res_desc *)hdr;
+ if (res_desc->type != RES_SYS_MEM &&
+ res_desc->type != RES_MEM_RESERVED)
+ continue;
+ if (res_desc->phys_start < (1ULL << 32)) {
+ low_end = max(low_end,
+ res_desc->phys_start + res_desc->len);
+ continue;
+ }
+
+ gd->bd->bi_dram[bank].start = res_desc->phys_start;
+ gd->bd->bi_dram[bank].size = res_desc->len;
+ mtrr_add_request(MTRR_TYPE_WRBACK, res_desc->phys_start,
+ res_desc->len);
+ log_debug("ram %llx %llx\n", gd->bd->bi_dram[bank].start,
+ gd->bd->bi_dram[bank].size);
+ }
+
+ /* Add the memory below 4GB */
gd->bd->bi_dram[0].start = 0;
- gd->bd->bi_dram[0].size = gd->ram_size;
-}
+ gd->bd->bi_dram[0].size = low_end;
-/*
- * This function looks for the highest region of memory lower than 4GB which
- * has enough space for U-Boot where U-Boot is aligned on a page boundary.
- * It overrides the default implementation found elsewhere which simply
- * picks the end of ram, wherever that may be. The location of the stack,
- * the relocation address, and how far U-Boot is moved by relocation are
- * set in the global data structure.
- */
-ulong board_get_usable_ram_top(ulong total_size)
-{
- return fsp_get_usable_lowmem_top(gd->arch.hob_list);
+ mtrr_add_request(MTRR_TYPE_WRBACK, 0, low_end);
+
+ return 0;
}
-unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
+unsigned int install_e820_map(unsigned int max_entries,
+ struct e820_entry *entries)
{
- unsigned num_entries = 0;
+ unsigned int num_entries = 0;
const struct hob_header *hdr;
struct hob_res_desc *res_desc;
entries[num_entries].type = E820_RESERVED;
num_entries++;
+#ifdef CONFIG_HAVE_ACPI_RESUME
+ /*
+ * Everything between U-Boot's stack and ram top needs to be
+ * reserved in order for ACPI S3 resume to work.
+ */
+ entries[num_entries].addr = gd->start_addr_sp - CONFIG_STACK_SIZE;
+ entries[num_entries].size = gd->ram_top - gd->start_addr_sp +
+ CONFIG_STACK_SIZE;
+ entries[num_entries].type = E820_RESERVED;
+ num_entries++;
+#endif
+
return num_entries;
}
+
+#if CONFIG_IS_ENABLED(HANDOFF) && IS_ENABLED(CONFIG_USE_HOB)
+int handoff_arch_save(struct spl_handoff *ho)
+{
+ ho->arch.usable_ram_top = fsp_get_usable_lowmem_top(gd->arch.hob_list);
+ ho->arch.hob_list = gd->arch.hob_list;
+
+ return 0;
+}
+#endif