3 * Common functions for OMAP4/5 based boards
6 * Texas Instruments, <www.ti.com>
9 * Aneesh V <aneesh@ti.com>
10 * Steve Sakoman <steve@sakoman.com>
12 * SPDX-License-Identifier: GPL-2.0+
16 #include <asm/arch/sys_proto.h>
17 #include <linux/sizes.h>
19 #include <asm/omap_common.h>
20 #include <linux/compiler.h>
21 #include <asm/system.h>
23 DECLARE_GLOBAL_DATA_PTR
;
25 void do_set_mux(u32 base
, struct pad_conf_entry
const *array
, int size
)
28 struct pad_conf_entry
*pad
= (struct pad_conf_entry
*) array
;
30 for (i
= 0; i
< size
; i
++, pad
++)
31 writew(pad
->val
, base
+ pad
->offset
);
34 static void set_mux_conf_regs(void)
36 switch (omap_hw_init_context()) {
37 case OMAP_INIT_CONTEXT_SPL
:
38 set_muxconf_regs_essential();
40 case OMAP_INIT_CONTEXT_UBOOT_AFTER_SPL
:
42 case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR
:
43 case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH
:
44 set_muxconf_regs_essential();
54 /* Read Main ID Register (MIDR) */
55 asm ("mrc p15, 0, %0, c0, c0, 0" : "=r" (rev
));
60 static void omap_rev_string(void)
62 u32 omap_rev
= omap_revision();
63 u32 soc_variant
= (omap_rev
& 0xF0000000) >> 28;
64 u32 omap_variant
= (omap_rev
& 0xFFFF0000) >> 16;
65 u32 major_rev
= (omap_rev
& 0x00000F00) >> 8;
66 u32 minor_rev
= (omap_rev
& 0x000000F0) >> 4;
72 printf("%x ES%x.%x\n", omap_variant
, major_rev
,
76 #ifdef CONFIG_SPL_BUILD
77 void spl_display_print(void)
83 void __weak
srcomp_enable(void)
87 #ifdef CONFIG_ARCH_CPU_INIT
89 * SOC specific cpu init
91 int arch_cpu_init(void)
93 save_omap_boot_params();
96 #endif /* CONFIG_ARCH_CPU_INIT */
100 * Description: Does early system init of watchdog, muxing, andclocks
101 * Watchdog disable is done always. For the rest what gets done
102 * depends on the boot mode in which this function is executed
103 * 1. s_init of SPL running from SRAM
104 * 2. s_init of U-Boot running from FLASH
105 * 3. s_init of U-Boot loaded to SDRAM by SPL
106 * 4. s_init of U-Boot loaded to SDRAM by ROM code using the
107 * Configuration Header feature
108 * Please have a look at the respective functions to see what gets
109 * done in each of these cases
110 * This function is called with SRAM stack.
115 * Save the boot parameters passed from romcode.
116 * We cannot delay the saving further than this,
117 * to prevent overwrites.
119 #ifdef CONFIG_SPL_BUILD
120 save_omap_boot_params();
122 init_omap_revision();
125 #ifdef CONFIG_SPL_BUILD
127 (is_omap44xx() || (omap_revision() == OMAP5430_ES1_0
)))
128 force_emif_self_refresh();
132 #ifdef CONFIG_SPL_BUILD
134 setup_clocks_for_console();
138 preloader_console_init();
142 #ifdef CONFIG_SPL_BUILD
143 /* For regular u-boot sdram_init() is called from dram_init() */
149 * Routine: wait_for_command_complete
150 * Description: Wait for posting to finish on watchdog
152 void wait_for_command_complete(struct watchdog
*wd_base
)
156 pending
= readl(&wd_base
->wwps
);
161 * Routine: watchdog_init
162 * Description: Shut down watch dogs
164 void watchdog_init(void)
166 struct watchdog
*wd2_base
= (struct watchdog
*)WDT2_BASE
;
168 writel(WD_UNLOCK1
, &wd2_base
->wspr
);
169 wait_for_command_complete(wd2_base
);
170 writel(WD_UNLOCK2
, &wd2_base
->wspr
);
175 * This function finds the SDRAM size available in the system
176 * based on DMM section configurations
177 * This is needed because the size of memory installed may be
178 * different on different versions of the board
180 u32
omap_sdram_size(void)
182 u32 section
, i
, valid
;
183 u64 sdram_start
= 0, sdram_end
= 0, addr
,
184 size
, total_size
= 0, trap_size
= 0, trap_start
= 0;
186 for (i
= 0; i
< 4; i
++) {
187 section
= __raw_readl(DMM_BASE
+ i
*4);
188 valid
= (section
& EMIF_SDRC_ADDRSPC_MASK
) >>
189 (EMIF_SDRC_ADDRSPC_SHIFT
);
190 addr
= section
& EMIF_SYS_ADDR_MASK
;
192 /* See if the address is valid */
193 if ((addr
>= TI_ARMV7_DRAM_ADDR_SPACE_START
) &&
194 (addr
< TI_ARMV7_DRAM_ADDR_SPACE_END
)) {
195 size
= ((section
& EMIF_SYS_SIZE_MASK
) >>
196 EMIF_SYS_SIZE_SHIFT
);
200 if (valid
!= DMM_SDRC_ADDR_SPC_INVALID
) {
201 if (!sdram_start
|| (addr
< sdram_start
))
203 if (!sdram_end
|| ((addr
+ size
) > sdram_end
))
204 sdram_end
= addr
+ size
;
212 if ((trap_start
>= sdram_start
) && (trap_start
< sdram_end
))
213 total_size
= (sdram_end
- sdram_start
) - (trap_size
);
215 total_size
= sdram_end
- sdram_start
;
223 * Description: sets uboots idea of sdram size
228 gd
->ram_size
= omap_sdram_size();
233 * Print board information
237 puts(sysinfo
.board_string
);
242 * get_device_type(): tell if GP/HS/EMU/TST
244 u32
get_device_type(void)
246 return (readl((*ctrl
)->control_status
) &
247 (DEVICE_TYPE_MASK
)) >> DEVICE_TYPE_SHIFT
;
250 #if defined(CONFIG_DISPLAY_CPUINFO)
252 * Print CPU information
254 int print_cpuinfo(void)