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/clocks.h>
27 #include <asm/omap_common.h>
28 #include <asm/arch/mux_omap5.h>
29 #include <asm/arch/clocks.h>
34 extern const struct omap_sysinfo sysinfo
;
37 void watchdog_init(void);
38 u32
get_device_type(void);
39 void do_set_mux(u32 base
, struct pad_conf_entry
const *array
, int size
);
40 void set_muxconf_regs_essential(void);
41 void set_muxconf_regs_non_essential(void);
42 void sr32(void *, u32
, u32
, u32
);
43 u32
wait_on_value(u32
, u32
, void *, u32
);
44 void sdelay(unsigned long);
45 void omap_rev_string(void);
46 void setup_clocks_for_console(void);
48 void bypass_dpll(u32
*const base
);
49 void freq_update_core(void);
50 u32
get_sys_clk_freq(void);
51 u32
omap5_ddr_clk(void);
52 void cancel_out(u32
*num
, u32
*den
, u32 den_limit
);
53 void sdram_init(void);
54 u32
omap_sdram_size(void);
56 void init_omap_revision(void);
57 void do_io_settings(void);
58 void omap_vc_init(u16 speed_khz
);
59 int omap_vc_bypass_send_value(u8 sa
, u8 reg_addr
, u8 reg_data
);
62 * This is used to verify if the configuration header
63 * was executed by Romcode prior to control of transfer
64 * to the bootloader. SPL is responsible for saving and
65 * passing this to the u-boot.
67 extern struct omap_boot_parameters boot_params
;
69 static inline u32
running_from_sdram(void)
72 asm volatile ("mov %0, pc" : "=r" (pc
));
73 return ((pc
>= OMAP54XX_DRAM_ADDR_SPACE_START
) &&
74 (pc
< OMAP54XX_DRAM_ADDR_SPACE_END
));
77 static inline u8
uboot_loaded_by_spl(void)
80 * u-boot can be running from sdram either because of configuration
81 * Header or by SPL. If because of CH, then the romcode sets the
82 * CHSETTINGS executed bit to true in the boot parameter structure that
83 * it passes to the bootloader.This parameter is stored in the ch_flags
84 * variable by both SPL and u-boot.Check out for CHSETTINGS, which is a
85 * mandatory section if CH is present.
87 if ((boot_params
.ch_flags
) & (CH_FLAGS_CHSETTINGS
))
90 return running_from_sdram();
93 * The basic hardware init of OMAP(s_init()) can happen in 4
95 * 1. SPL running from SRAM
96 * 2. U-Boot running from FLASH
97 * 3. Non-XIP U-Boot loaded to SDRAM by SPL
98 * 4. Non-XIP U-Boot loaded to SDRAM by ROM code using the
99 * Configuration Header feature
101 * This function finds this context.
102 * Defining as inline may help in compiling out unused functions in SPL
104 static inline u32
omap_hw_init_context(void)
106 #ifdef CONFIG_SPL_BUILD
107 return OMAP_INIT_CONTEXT_SPL
;
109 if (uboot_loaded_by_spl())
110 return OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL
;
111 else if (running_from_sdram())
112 return OMAP_INIT_CONTEXT_UBOOT_AFTER_CH
;
114 return OMAP_INIT_CONTEXT_UBOOT_FROM_NOR
;
118 static inline u32
omap_revision(void)
120 extern u32
*const omap5_revision
;
121 return *omap5_revision
;