diff options
Diffstat (limited to 'arch/x86/cpu/queensbay/tnc_dram.c')
-rw-r--r-- | arch/x86/cpu/queensbay/tnc_dram.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/arch/x86/cpu/queensbay/tnc_dram.c b/arch/x86/cpu/queensbay/tnc_dram.c new file mode 100644 index 0000000000..8e97c9b82a --- /dev/null +++ b/arch/x86/cpu/queensbay/tnc_dram.c @@ -0,0 +1,78 @@ +/* + * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <asm/arch/fsp/fsp_support.h> +#include <asm/e820.h> +#include <asm/post.h> + +DECLARE_GLOBAL_DATA_PTR; + +int dram_init(void) +{ + phys_size_t ram_size = 0; + union hob_pointers hob; + + hob.raw = gd->arch.hob_list; + while (!end_of_hob(hob)) { + if (get_hob_type(hob) == HOB_TYPE_RES_DESC) { + if (hob.res_desc->type == RES_SYS_MEM || + hob.res_desc->type == RES_MEM_RESERVED) { + ram_size += hob.res_desc->len; + } + } + hob.raw = get_next_hob(hob); + } + + gd->ram_size = ram_size; + post_code(POST_DRAM); + + return 0; +} + +void dram_init_banksize(void) +{ + gd->bd->bi_dram[0].start = 0; + gd->bd->bi_dram[0].size = gd->ram_size; +} + +/* + * 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); +} + +unsigned install_e820_map(unsigned max_entries, struct e820entry *entries) +{ + unsigned num_entries = 0; + + union hob_pointers hob; + + hob.raw = gd->arch.hob_list; + + while (!end_of_hob(hob)) { + if (get_hob_type(hob) == HOB_TYPE_RES_DESC) { + entries[num_entries].addr = hob.res_desc->phys_start; + entries[num_entries].size = hob.res_desc->len; + + if (hob.res_desc->type == RES_SYS_MEM) + entries[num_entries].type = E820_RAM; + else if (hob.res_desc->type == RES_MEM_RESERVED) + entries[num_entries].type = E820_RESERVED; + } + hob.raw = get_next_hob(hob); + num_entries++; + } + + return num_entries; +} |