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_SYS_FULL_VA)
43 	unsigned long tlb_fillptr;
44 	unsigned long tlb_emerg;
45 #endif
46 #endif
47 
48 #ifdef CONFIG_OMAP_COMMON
49 	u32 omap_boot_device;
50 	u32 omap_boot_mode;
51 	u8 omap_ch_flags;
52 #endif
53 #if defined(CONFIG_FSL_LSCH3) && defined(CONFIG_SYS_FSL_HAS_DP_DDR)
54 	unsigned long mem2_clk;
55 #endif
56 };
57 
58 #include <asm-generic/global_data.h>
59 
60 #ifdef __clang__
61 
62 #define DECLARE_GLOBAL_DATA_PTR
63 #define gd	get_gd()
64 
65 static inline gd_t *get_gd(void)
66 {
67 	gd_t *gd_ptr;
68 
69 #ifdef CONFIG_ARM64
70 	/*
71 	 * Make will already error that reserving x18 is not supported at the
72 	 * time of writing, clang: error: unknown argument: '-ffixed-x18'
73 	 */
74 	__asm__ volatile("mov %0, x18\n" : "=r" (gd_ptr));
75 #else
76 	__asm__ volatile("mov %0, r9\n" : "=r" (gd_ptr));
77 #endif
78 
79 	return gd_ptr;
80 }
81 
82 #else
83 
84 #ifdef CONFIG_ARM64
85 #define DECLARE_GLOBAL_DATA_PTR		register volatile gd_t *gd asm ("x18")
86 #else
87 #define DECLARE_GLOBAL_DATA_PTR		register volatile gd_t *gd asm ("r9")
88 #endif
89 #endif
90 
91 #endif /* __ASM_GBL_DATA_H */
92