/* SPDX-License-Identifier: GPL-2.0-only */ #include #include #include #include #include /* convenient shorthand (in MB) */ #define SRAM_START (EXYNOS5_SRAM_BASE >> 20) #define SRAM_SIZE 1 #define SRAM_END (SRAM_START + SRAM_SIZE) /* plus one... */ void bootblock_soc_init(void) { if (get_wakeup_state() == WAKEUP_DIRECT) { wakeup(); /* Never returns. */ } /* set up dcache and MMU */ mmu_init(); mmu_disable_range(0, SRAM_START); mmu_config_range(SRAM_START, SRAM_SIZE, DCACHE_WRITEBACK); mmu_config_range(SRAM_END, 4096 - SRAM_END, DCACHE_OFF); dcache_mmu_enable(); /* For most ARM systems, we have to initialize firmware media source * (ex, SPI, SD/MMC, or eMMC) now; but for Exynos platform, that is * already handled by iROM so there's no need to setup again. */ }