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1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright 2013-2015 Arcturus Networks, Inc.
4  *           http://www.arcturusnetworks.com/products/ucp1020/
5  * based on board/freescale/p1_p2_rdb_pc/spl_minimal.c
6  * original copyright follows:
7  * Copyright 2011 Freescale Semiconductor, Inc.
8  */
9 
10 #include <common.h>
11 #include <ns16550.h>
12 #include <asm/io.h>
13 #include <nand.h>
14 #include <linux/compiler.h>
15 #include <asm/fsl_law.h>
16 #include <fsl_ddr_sdram.h>
17 #include <asm/global_data.h>
18 
19 DECLARE_GLOBAL_DATA_PTR;
20 
board_init_f(ulong bootflag)21 void board_init_f(ulong bootflag)
22 {
23 	u32 plat_ratio;
24 	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
25 
26 #if defined(CONFIG_SYS_NAND_BR_PRELIM) && defined(CONFIG_SYS_NAND_OR_PRELIM)
27 	set_lbc_br(0, CONFIG_SYS_NAND_BR_PRELIM);
28 	set_lbc_or(0, CONFIG_SYS_NAND_OR_PRELIM);
29 #endif
30 
31 	/* initialize selected port with appropriate baud rate */
32 	plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
33 	plat_ratio >>= 1;
34 	gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio;
35 
36 	NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
37 		     gd->bus_clk / 16 / CONFIG_BAUDRATE);
38 
39 	puts("\nNAND boot... ");
40 
41 	/* copy code to RAM and jump to it - this should not return */
42 	/* NOTE - code has to be copied out of NAND buffer before
43 	 * other blocks can be read.
44 	 */
45 	relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE);
46 }
47 
board_init_r(gd_t * gd,ulong dest_addr)48 void board_init_r(gd_t *gd, ulong dest_addr)
49 {
50 	puts("\nSecond program loader running in sram...");
51 	nand_boot();
52 }
53 
putc(char c)54 void putc(char c)
55 {
56 	if (c == '\n')
57 		NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
58 
59 	NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
60 }
61 
puts(const char * str)62 void puts(const char *str)
63 {
64 	while (*str)
65 		putc(*str++);
66 }
67