3 * Texas Instruments, <www.ti.com>
5 * SPDX-License-Identifier: GPL-2.0+
11 #include <asm/arch/omap.h>
13 #include <asm/arch/clock.h>
14 #include <asm/omap_common.h>
15 #include <linux/mtd/omap_gpmc.h>
16 #include <asm/arch/clock.h>
18 DECLARE_GLOBAL_DATA_PTR
;
20 struct pad_conf_entry
{
28 extern const struct omap_sysinfo sysinfo
;
31 void watchdog_init(void);
32 u32
get_device_type(void);
33 void do_set_mux(u32 base
, struct pad_conf_entry
const *array
, int size
);
34 void set_muxconf_regs_essential(void);
35 void sr32(void *, u32
, u32
, u32
);
36 u32
wait_on_value(u32
, u32
, void *, u32
);
37 void sdelay(unsigned long);
38 void setup_clocks_for_console(void);
40 void bypass_dpll(u32
const base
);
41 void freq_update_core(void);
42 u32
get_sys_clk_freq(void);
43 u32
omap5_ddr_clk(void);
44 void cancel_out(u32
*num
, u32
*den
, u32 den_limit
);
45 void sdram_init(void);
46 u32
omap_sdram_size(void);
48 void save_omap_boot_params(void);
49 void init_omap_revision(void);
50 void do_io_settings(void);
51 void sri2c_init(void);
52 void gpi2c_init(void);
53 int omap_vc_bypass_send_value(u8 sa
, u8 reg_addr
, u8 reg_data
);
55 void force_emif_self_refresh(void);
56 void get_ioregs(const struct ctrl_ioregs
**regs
);
57 void srcomp_enable(void);
58 void setup_warmreset_time(void);
60 static inline u32
running_from_sdram(void)
63 asm volatile ("mov %0, pc" : "=r" (pc
));
64 return ((pc
>= OMAP54XX_DRAM_ADDR_SPACE_START
) &&
65 (pc
< OMAP54XX_DRAM_ADDR_SPACE_END
));
68 static inline u8
uboot_loaded_by_spl(void)
71 * u-boot can be running from sdram either because of configuration
72 * Header or by SPL. If because of CH, then the romcode sets the
73 * CHSETTINGS executed bit to true in the boot parameter structure that
74 * it passes to the bootloader.This parameter is stored in the ch_flags
75 * variable by both SPL and u-boot.Check out for CHSETTINGS, which is a
76 * mandatory section if CH is present.
78 if ((gd
->arch
.omap_boot_params
.ch_flags
) & (CH_FLAGS_CHSETTINGS
))
81 return running_from_sdram();
84 * The basic hardware init of OMAP(s_init()) can happen in 4
86 * 1. SPL running from SRAM
87 * 2. U-Boot running from FLASH
88 * 3. Non-XIP U-Boot loaded to SDRAM by SPL
89 * 4. Non-XIP U-Boot loaded to SDRAM by ROM code using the
90 * Configuration Header feature
92 * This function finds this context.
93 * Defining as inline may help in compiling out unused functions in SPL
95 static inline u32
omap_hw_init_context(void)
97 #ifdef CONFIG_SPL_BUILD
98 return OMAP_INIT_CONTEXT_SPL
;
100 if (uboot_loaded_by_spl())
101 return OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL
;
102 else if (running_from_sdram())
103 return OMAP_INIT_CONTEXT_UBOOT_AFTER_CH
;
105 return OMAP_INIT_CONTEXT_UBOOT_FROM_NOR
;
109 static inline u32
div_round_up(u32 num
, u32 den
)
111 return (num
+ den
- 1)/den
;
114 static inline u32
usec_to_32k(u32 usec
)
116 return div_round_up(32768 * usec
, 1000000);