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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Actions Semi Owl SoCs platform support.
- *
- * Copyright (C) 2018 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
- */
- #include <cpu_func.h>
- #include <init.h>
- #include <asm/cache.h>
- #include <asm/global_data.h>
- #include <linux/arm-smccc.h>
- #include <linux/psci.h>
- #include <common.h>
- #include <asm/io.h>
- #include <asm/mach-types.h>
- #include <asm/psci.h>
- #define DMM_INTERLEAVE_PER_CH_CFG 0xe0290028
- DECLARE_GLOBAL_DATA_PTR;
- unsigned int owl_get_ddrcap(void)
- {
- unsigned int val, cap;
- /* ddr capacity register initialized by ddr driver
- * in early bootloader
- */
- #if defined(CONFIG_MACH_S700)
- val = (readl(DMM_INTERLEAVE_PER_CH_CFG) >> 8) & 0x7;
- cap = (val + 1) * 256;
- #elif defined(CONFIG_MACH_S900)
- val = (readl(DMM_INTERLEAVE_PER_CH_CFG) >> 8) & 0xf;
- cap = 64 * (1 << val);
- #endif
- return cap;
- }
- /*
- * dram_init - sets uboots idea of sdram size
- */
- int dram_init(void)
- {
- gd->ram_size = owl_get_ddrcap() * 1024 * 1024;
- return 0;
- }
- /* This is called after dram_init() so use get_ram_size result */
- int dram_init_banksize(void)
- {
- gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
- gd->bd->bi_dram[0].size = gd->ram_size;
- return 0;
- }
- static void show_psci_version(void)
- {
- struct arm_smccc_res res;
- arm_smccc_smc(ARM_PSCI_0_2_FN_PSCI_VERSION, 0, 0, 0, 0, 0, 0, 0, &res);
- printf("PSCI: v%ld.%ld\n",
- PSCI_VERSION_MAJOR(res.a0),
- PSCI_VERSION_MINOR(res.a0));
- }
- int board_init(void)
- {
- show_psci_version();
- return 0;
- }
- void reset_cpu(void)
- {
- psci_system_reset();
- }
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