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