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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 <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 0x80000000
- ulong board_get_usable_ram_top(ulong total_size)
- {
- if (gd->ram_size > USABLE_RAM_SIZE)
- return USABLE_RAM_SIZE;
- return gd->ram_size;
- }
- /*
- * 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 (CONFIG_IS_ENABLED(ARMADA_8K))
- return a8k_dram_init_banksize();
- else if (CONFIG_IS_ENABLED(ARMADA_3700))
- return a3700_dram_init_banksize();
- else
- return fdtdec_setup_memory_banksize();
- }
- __weak int dram_init(void)
- {
- if (CONFIG_IS_ENABLED(ARMADA_8K)) {
- gd->ram_size = a8k_dram_scan_ap_sz();
- if (gd->ram_size != 0)
- return 0;
- }
- if (CONFIG_IS_ENABLED(ARMADA_3700))
- return a3700_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);
- #ifdef CONFIG_DM_PCI
- /* Trigger PCIe devices detection */
- pci_init();
- #endif
- return 0;
- }
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