// SPDX-License-Identifier: GPL-2.0 /* * Gemini Device Tree boot support */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/io.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> #include <asm/system_misc.h> #include <asm/proc-fns.h> #ifdef [31mCONFIG_DEBUG_GEMINI[0m /* This is needed for LL-debug/earlyprintk/debug-macro.S */ static struct map_desc gemini_io_desc[] __initdata = { { .virtual = [31mCONFIG_DEBUG_UART_VIRT[0m, .pfn = __phys_to_pfn([31mCONFIG_DEBUG_UART_PHYS[0m), .length = SZ_4K, .type = MT_DEVICE, }, }; static void __init gemini_map_io(void) { iotable_init(gemini_io_desc, ARRAY_SIZE(gemini_io_desc)); } #else #define gemini_map_io NULL #endif static void gemini_idle(void) { /* * Because of broken hardware we have to enable interrupts or the CPU * will never wakeup... Acctualy it is not very good to enable * interrupts first since scheduler can miss a tick, but there is * no other way around this. Platforms that needs it for power saving * should enable it in init code, since by default it is * disabled. */ /* FIXME: Enabling interrupts here is racy! */ local_irq_enable(); cpu_do_idle(); } static void __init gemini_init_machine(void) { arm_pm_idle = gemini_idle; } static const char *gemini_board_compat[] = { "cortina,gemini", NULL, }; DT_MACHINE_START(GEMINI_DT, "Gemini (Device Tree)") .map_io = gemini_map_io, .init_machine = gemini_init_machine, .dt_compat = gemini_board_compat, MACHINE_END |