1 /*
2  * Copyright 2010 Extreme Engineering Solutions, Inc.
3  *
4  * See file CREDITS for list of people who contributed to this
5  * project.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License as
9  * published by the Free Software Foundation; either version 2 of
10  * the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20  * MA 02111-1307 USA
21  */
22 
23 #include <common.h>
24 #include <command.h>
25 #include <asm/processor.h>
26 #include <asm/mmu.h>
27 #include <asm/immap_85xx.h>
28 #include <asm/fsl_pci.h>
29 #include <asm/io.h>
30 #include <asm/cache.h>
31 #include <libfdt.h>
32 #include <fdt_support.h>
33 #include <pca953x.h>
34 
35 DECLARE_GLOBAL_DATA_PTR;
36 
37 extern void ft_board_pci_setup(void *blob, bd_t *bd);
38 
39 static void flash_cs_fixup(void)
40 {
41 	int flash_sel;
42 
43 	/*
44 	 * Print boot dev and swap flash flash chip selects if booted from 2nd
45 	 * flash.  Swapping chip selects presents user with a common memory
46 	 * map regardless of which flash was booted from.
47 	 */
48 	flash_sel = !((pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) &
49 			CONFIG_SYS_PCA953X_C0_FLASH_PASS_CS));
50 	printf("Flash: Executed from flash%d\n", flash_sel ? 2 : 1);
51 
52 	if (flash_sel) {
53 		set_lbc_br(0, CONFIG_SYS_BR1_PRELIM);
54 		set_lbc_or(0, CONFIG_SYS_OR1_PRELIM);
55 
56 		set_lbc_br(1, CONFIG_SYS_BR0_PRELIM);
57 		set_lbc_or(1, CONFIG_SYS_OR0_PRELIM);
58 	}
59 }
60 
61 int board_early_init_r(void)
62 {
63 	/* Initialize PCA9557 devices */
64 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR0, 0xff, 0);
65 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR1, 0xff, 0);
66 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR2, 0xff, 0);
67 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR3, 0xff, 0);
68 
69 	/*
70 	 * Remap NOR flash region to caching-inhibited
71 	 * so that flash can be erased/programmed properly.
72 	 */
73 
74 	/* Flush d-cache and invalidate i-cache of any FLASH data */
75 	flush_dcache();
76 	invalidate_icache();
77 
78 	/* Invalidate existing TLB entry for NOR flash */
79 	disable_tlb(0);
80 	set_tlb(1, (CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
81 		(CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
82 		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
83 		0, 0, BOOKE_PAGESZ_256M, 1);
84 
85 	flash_cs_fixup();
86 
87 	return 0;
88 }
89 
90 #if defined(CONFIG_OF_BOARD_SETUP)
91 void ft_board_setup(void *blob, bd_t *bd)
92 {
93 #ifdef CONFIG_PCI
94 	ft_board_pci_setup(blob, bd);
95 #endif
96 	ft_cpu_setup(blob, bd);
97 }
98 #endif
99