upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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133 lines
3.6 KiB
133 lines
3.6 KiB
/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* (C) Copyright 2010,2011
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* Graeme Russ, <graeme.russ@gmail.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but without any warranty; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <malloc.h>
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#include <asm/e820.h>
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#include <asm/u-boot-x86.h>
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#include <asm/global_data.h>
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#include <asm/processor.h>
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#include <asm/arch/sysinfo.h>
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#include <asm/arch/tables.h>
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DECLARE_GLOBAL_DATA_PTR;
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unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
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{
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int i;
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unsigned num_entries = min(lib_sysinfo.n_memranges, max_entries);
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if (num_entries < lib_sysinfo.n_memranges) {
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printf("Warning: Limiting e820 map to %d entries.\n",
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num_entries);
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}
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for (i = 0; i < num_entries; i++) {
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struct memrange *memrange = &lib_sysinfo.memrange[i];
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entries[i].addr = memrange->base;
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entries[i].size = memrange->size;
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entries[i].type = memrange->type;
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}
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return num_entries;
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}
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/*
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* This function looks for the highest region of memory lower than 4GB which
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* has enough space for U-Boot where U-Boot is aligned on a page boundary. It
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* overrides the default implementation found elsewhere which simply picks the
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* end of ram, wherever that may be. The location of the stack, the relocation
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* address, and how far U-Boot is moved by relocation are set in the global
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* data structure.
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*/
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ulong board_get_usable_ram_top(ulong total_size)
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{
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uintptr_t dest_addr = 0;
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int i;
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for (i = 0; i < lib_sysinfo.n_memranges; i++) {
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struct memrange *memrange = &lib_sysinfo.memrange[i];
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/* Force U-Boot to relocate to a page aligned address. */
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uint64_t start = roundup(memrange->base, 1 << 12);
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uint64_t end = memrange->base + memrange->size;
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/* Ignore non-memory regions. */
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if (memrange->type != CB_MEM_RAM)
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continue;
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/* Filter memory over 4GB. */
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if (end > 0xffffffffULL)
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end = 0x100000000ULL;
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/* Skip this region if it's too small. */
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if (end - start < total_size)
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continue;
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/* Use this address if it's the largest so far. */
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if (end > dest_addr)
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dest_addr = end;
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}
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/* If no suitable area was found, return an error. */
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if (!dest_addr)
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panic("No available memory found for relocation");
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return (ulong)dest_addr;
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}
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int dram_init_f(void)
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{
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int i;
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phys_size_t ram_size = 0;
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for (i = 0; i < lib_sysinfo.n_memranges; i++) {
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struct memrange *memrange = &lib_sysinfo.memrange[i];
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unsigned long long end = memrange->base + memrange->size;
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if (memrange->type == CB_MEM_RAM && end > ram_size)
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ram_size = end;
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}
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gd->ram_size = ram_size;
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if (ram_size == 0)
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return -1;
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return 0;
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}
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int dram_init(void)
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{
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int i, j;
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if (CONFIG_NR_DRAM_BANKS) {
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for (i = 0, j = 0; i < lib_sysinfo.n_memranges; i++) {
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struct memrange *memrange = &lib_sysinfo.memrange[i];
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if (memrange->type == CB_MEM_RAM) {
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gd->bd->bi_dram[j].start = memrange->base;
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gd->bd->bi_dram[j].size = memrange->size;
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j++;
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if (j >= CONFIG_NR_DRAM_BANKS)
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break;
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}
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}
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}
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return 0;
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}
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