1 /*
2  * Copyright 2010 Extreme Engineering Solutions, Inc.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <command.h>
9 #include <asm/processor.h>
10 #include <asm/mmu.h>
11 #include <asm/immap_85xx.h>
12 #include <asm/fsl_pci.h>
13 #include <asm/io.h>
14 #include <asm/cache.h>
15 #include <linux/libfdt.h>
16 #include <fdt_support.h>
17 #include <pca953x.h>
18 
19 DECLARE_GLOBAL_DATA_PTR;
20 
21 extern void ft_board_pci_setup(void *blob, bd_t *bd);
22 
23 static void flash_cs_fixup(void)
24 {
25 	int flash_sel;
26 
27 	/*
28 	 * Print boot dev and swap flash flash chip selects if booted from 2nd
29 	 * flash.  Swapping chip selects presents user with a common memory
30 	 * map regardless of which flash was booted from.
31 	 */
32 	flash_sel = !((pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) &
33 			CONFIG_SYS_PCA953X_C0_FLASH_PASS_CS));
34 	printf("Flash: Executed from flash%d\n", flash_sel ? 2 : 1);
35 
36 	if (flash_sel) {
37 		set_lbc_br(0, CONFIG_SYS_BR1_PRELIM);
38 		set_lbc_or(0, CONFIG_SYS_OR1_PRELIM);
39 
40 		set_lbc_br(1, CONFIG_SYS_BR0_PRELIM);
41 		set_lbc_or(1, CONFIG_SYS_OR0_PRELIM);
42 	}
43 }
44 
45 int board_early_init_r(void)
46 {
47 	/* Initialize PCA9557 devices */
48 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR0, 0xff, 0);
49 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR1, 0xff, 0);
50 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR2, 0xff, 0);
51 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR3, 0xff, 0);
52 
53 	/*
54 	 * Remap NOR flash region to caching-inhibited
55 	 * so that flash can be erased/programmed properly.
56 	 */
57 
58 	/* Flush d-cache and invalidate i-cache of any FLASH data */
59 	flush_dcache();
60 	invalidate_icache();
61 
62 	/* Invalidate existing TLB entry for NOR flash */
63 	disable_tlb(0);
64 	set_tlb(1, (CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
65 		(CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
66 		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
67 		0, 0, BOOKE_PAGESZ_256M, 1);
68 
69 	flash_cs_fixup();
70 
71 	return 0;
72 }
73 
74 #if defined(CONFIG_OF_BOARD_SETUP)
75 int ft_board_setup(void *blob, bd_t *bd)
76 {
77 #ifdef CONFIG_PCI
78 	ft_board_pci_setup(blob, bd);
79 #endif
80 	ft_cpu_setup(blob, bd);
81 
82 	return 0;
83 }
84 #endif
85