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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 Stefan Roese <sr@denx.de>
*/
#include <common.h>
#include <dm.h>
#include <fdtdec.h>
#include <init.h>
#include <asm/cache.h>
#include <asm/global_data.h>
#include <asm/ptrace.h>
#include <linux/libfdt.h>
#include <linux/sizes.h>
#include <pci.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/arch/cpu.h>
#include <asm/arch/soc.h>
#include <asm/armv8/mmu.h>
DECLARE_GLOBAL_DATA_PTR;
/*
* Not all memory is mapped in the MMU. So we need to restrict the
* memory size so that U-Boot does not try to access it. Also, the
* internal registers are located at 0xf000.0000 - 0xffff.ffff.
* Currently only 2GiB are mapped for system memory. This is what
* we pass to the U-Boot subsystem here.
*/
#define USABLE_RAM_SIZE 0x80000000ULL
phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
{
unsigned long top = CFG_SYS_SDRAM_BASE + min(gd->ram_size, USABLE_RAM_SIZE);
return (gd->ram_top > top) ? top : gd->ram_top;
}
/*
* On ARMv8, MBus is not configured in U-Boot. To enable compilation
* of the already implemented drivers, lets add a dummy version of
* this function so that linking does not fail.
*/
const struct mbus_dram_target_info *mvebu_mbus_dram_info(void)
{
return NULL;
}
__weak int dram_init_banksize(void)
{
if (IS_ENABLED(CONFIG_ARMADA_8K))
return a8k_dram_init_banksize();
else if (IS_ENABLED(CONFIG_ARMADA_3700))
return a3700_dram_init_banksize();
else if (IS_ENABLED(CONFIG_ALLEYCAT_5))
return alleycat5_dram_init_banksize();
else
return fdtdec_setup_memory_banksize();
}
__weak int dram_init(void)
{
if (IS_ENABLED(CONFIG_ARMADA_8K)) {
gd->ram_size = a8k_dram_scan_ap_sz();
if (gd->ram_size != 0)
return 0;
}
if (IS_ENABLED(CONFIG_ARMADA_3700))
return a3700_dram_init();
if (IS_ENABLED(CONFIG_ALLEYCAT_5))
return alleycat5_dram_init();
if (fdtdec_setup_mem_size_base() != 0)
return -EINVAL;
return 0;
}
int arch_cpu_init(void)
{
/* Nothing to do (yet) */
return 0;
}
int arch_early_init_r(void)
{
struct udevice *dev;
int ret;
int i;
/*
* Loop over all MISC uclass drivers to call the comphy code
* and init all CP110 devices enabled in the DT
*/
i = 0;
while (1) {
/* Call the comphy code via the MISC uclass driver */
ret = uclass_get_device(UCLASS_MISC, i++, &dev);
/* We're done, once no further CP110 device is found */
if (ret)
break;
}
/* Cause the SATA device to do its early init */
uclass_first_device(UCLASS_AHCI, &dev);
/* Trigger PCIe devices detection */
if (IS_ENABLED(CONFIG_PCI))
pci_init();
return 0;
}
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