1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright 2008 Extreme Engineering Solutions, Inc.
4  */
5 
6 #include <common.h>
7 #include <command.h>
8 #include <asm/processor.h>
9 #include <asm/mmu.h>
10 #include <asm/immap_85xx.h>
11 #include <asm/fsl_pci.h>
12 #include <asm/io.h>
13 #include <asm/cache.h>
14 #include <linux/libfdt.h>
15 #include <fdt_support.h>
16 #include <pca953x.h>
17 
18 extern void ft_board_pci_setup(void *blob, bd_t *bd);
19 
20 static void flash_cs_fixup(void)
21 {
22 	int flash_sel;
23 
24 	/*
25 	 * Print boot dev and swap flash flash chip selects if booted from 2nd
26 	 * flash.  Swapping chip selects presents user with a common memory
27 	 * map regardless of which flash was booted from.
28 	 */
29 	flash_sel = !((pca953x_get_val(CONFIG_SYS_I2C_PCA953X_ADDR0) &
30 			CONFIG_SYS_PCA953X_C0_FLASH_PASS_CS));
31 	printf("Flash: Executed from flash%d\n", flash_sel ? 2 : 1);
32 
33 	if (flash_sel) {
34 		set_lbc_br(0, CONFIG_SYS_BR1_PRELIM);
35 		set_lbc_or(0, CONFIG_SYS_OR1_PRELIM);
36 
37 		set_lbc_br(1, CONFIG_SYS_BR0_PRELIM);
38 		set_lbc_or(1, CONFIG_SYS_OR0_PRELIM);
39 	}
40 }
41 
42 int board_early_init_r(void)
43 {
44 	/* Initialize PCA9557 devices */
45 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR0, 0xff, 0);
46 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR1, 0xff, 0);
47 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR2, 0xff, 0);
48 	pca953x_set_pol(CONFIG_SYS_I2C_PCA953X_ADDR3, 0xff, 0);
49 
50 	/*
51 	 * Remap NOR flash region to caching-inhibited
52 	 * so that flash can be erased/programmed properly.
53 	 */
54 
55 	/* Flush d-cache and invalidate i-cache of any FLASH data */
56 	flush_dcache();
57 	invalidate_icache();
58 
59 	/* Invalidate existing TLB entry for NOR flash */
60 	disable_tlb(0);
61 	set_tlb(1, (CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
62 		(CONFIG_SYS_FLASH_BASE2 & 0xf0000000),
63 		MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
64 		0, 0, BOOKE_PAGESZ_256M, 1);
65 
66 	flash_cs_fixup();
67 
68 	return 0;
69 }
70 
71 #if defined(CONFIG_OF_BOARD_SETUP)
72 int ft_board_setup(void *blob, bd_t *bd)
73 {
74 #ifdef CONFIG_PCI
75 	ft_board_pci_setup(blob, bd);
76 #endif
77 	ft_cpu_setup(blob, bd);
78 
79 	return 0;
80 }
81 #endif
82