1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * (C) Copyright 2002-2010 4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 5 */ 6 7 #ifndef __ASM_GBL_DATA_H 8 #define __ASM_GBL_DATA_H 9 10 /* Architecture-specific global data */ 11 struct arch_global_data { 12 #if defined(CONFIG_FSL_ESDHC) 13 u32 sdhc_clk; 14 #endif 15 16 #if defined(CONFIG_U_QE) 17 u32 qe_clk; 18 u32 brg_clk; 19 uint mp_alloc_base; 20 uint mp_alloc_top; 21 #endif /* CONFIG_U_QE */ 22 23 #ifdef CONFIG_AT91FAMILY 24 /* "static data" needed by at91's clock.c */ 25 unsigned long cpu_clk_rate_hz; 26 unsigned long main_clk_rate_hz; 27 unsigned long mck_rate_hz; 28 unsigned long plla_rate_hz; 29 unsigned long pllb_rate_hz; 30 unsigned long at91_pllb_usb_init; 31 #endif 32 /* "static data" needed by most of timer.c on ARM platforms */ 33 unsigned long timer_rate_hz; 34 unsigned int tbu; 35 unsigned int tbl; 36 unsigned long lastinc; 37 unsigned long long timer_reset_value; 38 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) 39 unsigned long tlb_addr; 40 unsigned long tlb_size; 41 #if defined(CONFIG_ARM64) 42 unsigned long tlb_fillptr; 43 unsigned long tlb_emerg; 44 #endif 45 #endif 46 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE 47 #define MEM_RESERVE_SECURE_SECURED 0x1 48 #define MEM_RESERVE_SECURE_MAINTAINED 0x2 49 #define MEM_RESERVE_SECURE_ADDR_MASK (~0x3) 50 /* 51 * Secure memory addr 52 * This variable needs maintenance if the RAM base is not zero, 53 * or if RAM splits into non-consecutive banks. It also has a 54 * flag indicating the secure memory is marked as secure by MMU. 55 * Flags used: 0x1 secured 56 * 0x2 maintained 57 */ 58 phys_addr_t secure_ram; 59 unsigned long tlb_allocated; 60 #endif 61 #ifdef CONFIG_RESV_RAM 62 /* 63 * Reserved RAM for memory resident, eg. Management Complex (MC) 64 * driver which continues to run after U-Boot exits. 65 */ 66 phys_addr_t resv_ram; 67 #endif 68 69 #ifdef CONFIG_ARCH_OMAP2PLUS 70 u32 omap_boot_device; 71 u32 omap_boot_mode; 72 u8 omap_ch_flags; 73 #endif 74 #if defined(CONFIG_FSL_LSCH3) && defined(CONFIG_SYS_FSL_HAS_DP_DDR) 75 unsigned long mem2_clk; 76 #endif 77 78 #ifdef CONFIG_ARCH_IMX8 79 struct udevice *scu_dev; 80 #endif 81 }; 82 83 #include <asm-generic/global_data.h> 84 85 #ifdef __clang__ 86 87 #define DECLARE_GLOBAL_DATA_PTR 88 #define gd get_gd() 89 get_gd(void)90static inline gd_t *get_gd(void) 91 { 92 gd_t *gd_ptr; 93 94 #ifdef CONFIG_ARM64 95 /* 96 * Make will already error that reserving x18 is not supported at the 97 * time of writing, clang: error: unknown argument: '-ffixed-x18' 98 */ 99 __asm__ volatile("mov %0, x18\n" : "=r" (gd_ptr)); 100 #else 101 __asm__ volatile("mov %0, r9\n" : "=r" (gd_ptr)); 102 #endif 103 104 return gd_ptr; 105 } 106 107 #else 108 109 #ifdef CONFIG_ARM64 110 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("x18") 111 #else 112 #define DECLARE_GLOBAL_DATA_PTR register volatile gd_t *gd asm ("r9") 113 #endif 114 #endif 115 116 #endif /* __ASM_GBL_DATA_H */ 117