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
flash_cs_fixup(void)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
board_early_init_r(void)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)
ft_board_setup(void * blob,bd_t * bd)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