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 long tbu;
36 	unsigned long 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_OMAP2
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