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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
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*/
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#include <common.h>
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#include <init.h>
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#include <asm/global_data.h>
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#include <asm/post.h>
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#include <asm/arch/qemu.h>
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#include <linux/sizes.h>
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DECLARE_GLOBAL_DATA_PTR;
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u32 qemu_get_low_memory_size(void)
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{
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u32 ram;
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outb(HIGH_RAM_ADDR, CMOS_ADDR_PORT);
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ram = ((u32)inb(CMOS_DATA_PORT)) << 14;
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outb(LOW_RAM_ADDR, CMOS_ADDR_PORT);
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ram |= ((u32)inb(CMOS_DATA_PORT)) << 6;
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ram += 16 * 1024;
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return ram * 1024;
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}
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u64 qemu_get_high_memory_size(void)
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{
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u64 ram;
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outb(HIGH_HIGHRAM_ADDR, CMOS_ADDR_PORT);
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ram = ((u64)inb(CMOS_DATA_PORT)) << 22;
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outb(MID_HIGHRAM_ADDR, CMOS_ADDR_PORT);
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ram |= ((u64)inb(CMOS_DATA_PORT)) << 14;
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outb(LOW_HIGHRAM_ADDR, CMOS_ADDR_PORT);
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ram |= ((u64)inb(CMOS_DATA_PORT)) << 6;
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return ram * 1024;
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}
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int dram_init(void)
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{
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gd->ram_size = qemu_get_low_memory_size();
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gd->ram_size += qemu_get_high_memory_size();
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post_code(POST_DRAM);
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return 0;
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}
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int dram_init_banksize(void)
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{
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u64 high_mem_size;
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gd->bd->bi_dram[0].start = 0;
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gd->bd->bi_dram[0].size = qemu_get_low_memory_size();
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high_mem_size = qemu_get_high_memory_size();
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if (high_mem_size) {
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gd->bd->bi_dram[1].start = SZ_4G;
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gd->bd->bi_dram[1].size = high_mem_size;
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}
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return 0;
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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.
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* It overrides the default implementation found elsewhere which simply
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* picks the end of ram, wherever that may be. The location of the stack,
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* the relocation address, and how far U-Boot is moved by relocation are
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* set in the global data structure.
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*/
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phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
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{
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return qemu_get_low_memory_size();
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}
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