3 * Texas Instruments, <www.ti.com>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of
8 * the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #include <asm/arch/omap.h>
26 #include <asm/arch/clock.h>
27 #include <asm/omap_common.h>
28 #include <asm/arch/clock.h>
30 DECLARE_GLOBAL_DATA_PTR
;
32 struct pad_conf_entry
{
40 extern const struct omap_sysinfo sysinfo
;
43 void watchdog_init(void);
44 u32
get_device_type(void);
45 void do_set_mux(u32 base
, struct pad_conf_entry
const *array
, int size
);
46 void set_muxconf_regs_essential(void);
47 void set_muxconf_regs_non_essential(void);
48 void sr32(void *, u32
, u32
, u32
);
49 u32
wait_on_value(u32
, u32
, void *, u32
);
50 void sdelay(unsigned long);
51 void setup_clocks_for_console(void);
53 void bypass_dpll(u32
const base
);
54 void freq_update_core(void);
55 u32
get_sys_clk_freq(void);
56 u32
omap5_ddr_clk(void);
57 void cancel_out(u32
*num
, u32
*den
, u32 den_limit
);
58 void sdram_init(void);
59 u32
omap_sdram_size(void);
61 void save_omap_boot_params(void);
62 void init_omap_revision(void);
63 void do_io_settings(void);
64 void sri2c_init(void);
65 void gpi2c_init(void);
66 int omap_vc_bypass_send_value(u8 sa
, u8 reg_addr
, u8 reg_data
);
68 void force_emif_self_refresh(void);
69 void get_ioregs(const struct ctrl_ioregs
**regs
);
70 void srcomp_enable(void);
71 void setup_warmreset_time(void);
73 static inline u32
running_from_sdram(void)
76 asm volatile ("mov %0, pc" : "=r" (pc
));
77 return ((pc
>= OMAP54XX_DRAM_ADDR_SPACE_START
) &&
78 (pc
< OMAP54XX_DRAM_ADDR_SPACE_END
));
81 static inline u8
uboot_loaded_by_spl(void)
84 * u-boot can be running from sdram either because of configuration
85 * Header or by SPL. If because of CH, then the romcode sets the
86 * CHSETTINGS executed bit to true in the boot parameter structure that
87 * it passes to the bootloader.This parameter is stored in the ch_flags
88 * variable by both SPL and u-boot.Check out for CHSETTINGS, which is a
89 * mandatory section if CH is present.
91 if ((gd
->arch
.omap_boot_params
.ch_flags
) & (CH_FLAGS_CHSETTINGS
))
94 return running_from_sdram();
97 * The basic hardware init of OMAP(s_init()) can happen in 4
99 * 1. SPL running from SRAM
100 * 2. U-Boot running from FLASH
101 * 3. Non-XIP U-Boot loaded to SDRAM by SPL
102 * 4. Non-XIP U-Boot loaded to SDRAM by ROM code using the
103 * Configuration Header feature
105 * This function finds this context.
106 * Defining as inline may help in compiling out unused functions in SPL
108 static inline u32
omap_hw_init_context(void)
110 #ifdef CONFIG_SPL_BUILD
111 return OMAP_INIT_CONTEXT_SPL
;
113 if (uboot_loaded_by_spl())
114 return OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL
;
115 else if (running_from_sdram())
116 return OMAP_INIT_CONTEXT_UBOOT_AFTER_CH
;
118 return OMAP_INIT_CONTEXT_UBOOT_FROM_NOR
;
122 static inline u32
div_round_up(u32 num
, u32 den
)
124 return (num
+ den
- 1)/den
;
127 static inline u32
usec_to_32k(u32 usec
)
129 return div_round_up(32768 * usec
, 1000000);