2 * (C) Copyright 2007-2008
3 * Stefan Roese, DENX Software Engineering, sr@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <asm/cache.h>
30 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
32 #include <libfdt_env.h>
33 #include <fdt_support.h>
34 #include <asm/4xx_pcie.h>
36 DECLARE_GLOBAL_DATA_PTR;
38 void __ft_board_setup(void *blob, bd_t *bd)
43 u32 ranges[EBC_NUM_BANKS * 4];
45 char ebc_path[] = "/plb/opb/ebc";
47 ft_cpu_setup(blob, bd);
50 * Read 4xx EBC bus bridge registers to get mappings of the
51 * peripheral banks into the OPB/PLB address space
53 for (i = 0; i < EBC_NUM_BANKS; i++) {
54 mtdcr(EBC0_CFGADDR, EBC_BXCR(i));
55 bxcr = mfdcr(EBC0_CFGDATA);
57 if ((bxcr & EBC_BXCR_BU_MASK) != EBC_BXCR_BU_NONE) {
60 *p++ = bxcr & EBC_BXCR_BAS_MASK;
61 *p++ = EBC_BXCR_BANK_SIZE(bxcr);
66 #ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE
67 /* Update reg property in all nor flash nodes too */
68 fdt_fixup_nor_flash_size(blob);
71 /* Some 405 PPC's have EBC as direct PLB child in the dts */
72 if (fdt_path_offset(blob, ebc_path) < 0)
73 strcpy(ebc_path, "/plb/ebc");
74 rc = fdt_find_and_setprop(blob, ebc_path, "ranges", ranges,
75 (p - ranges) * sizeof(u32), 1);
77 printf("Unable to update property EBC mappings, err=%s\n",
81 void ft_board_setup(void *blob, bd_t *bd) __attribute__((weak, alias("__ft_board_setup")));
84 * Fixup all PCIe nodes by setting the device_type property
85 * to "pci-endpoint" instead is "pci" for endpoint ports.
86 * This property will get checked later by the Linux driver
87 * to properly configure the PCIe port in Linux (again).
89 void fdt_pcie_setup(void *blob)
91 const char *compat = "ibm,plb-pciex";
92 const char *prop = "device_type";
93 const char *prop_val = "pci-endpoint";
98 /* Search first PCIe node */
99 no = fdt_node_offset_by_compatible(blob, -1, compat);
100 while (no != -FDT_ERR_NOTFOUND) {
101 port = fdt_getprop(blob, no, "port", NULL);
103 printf("WARNING: could not find port property\n");
105 if (is_end_point(*port)) {
106 rc = fdt_setprop(blob, no, prop, prop_val,
107 strlen(prop_val) + 1);
109 printf("WARNING: could not set %s for %s: %s.\n",
110 prop, compat, fdt_strerror(rc));
114 /* Jump to next PCIe node */
115 no = fdt_node_offset_by_compatible(blob, no, compat);
119 void ft_cpu_setup(void *blob, bd_t *bd)
124 get_sys_info(&sys_info);
126 do_fixup_by_prop_u32(blob, "device_type", "cpu", 4, "timebase-frequency",
128 do_fixup_by_prop_u32(blob, "device_type", "cpu", 4, "clock-frequency",
130 do_fixup_by_path_u32(blob, "/plb", "clock-frequency", sys_info.freqPLB, 1);
131 do_fixup_by_path_u32(blob, "/plb/opb", "clock-frequency", sys_info.freqOPB, 1);
133 if (fdt_path_offset(blob, "/plb/opb/ebc") >= 0)
134 do_fixup_by_path_u32(blob, "/plb/opb/ebc", "clock-frequency",
135 sys_info.freqEBC, 1);
137 do_fixup_by_path_u32(blob, "/plb/ebc", "clock-frequency",
138 sys_info.freqEBC, 1);
140 fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
143 * Fixup all UART clocks for CPU internal UARTs
144 * (only these UARTs are definitely clocked by gd->uart_clk)
146 * These UARTs are direct childs of /plb/opb. This code
147 * does not touch any UARTs that are connected to the ebc.
149 off = fdt_path_offset(blob, "/plb/opb");
150 while ((off = fdt_next_node(blob, off, &ndepth)) >= 0) {
152 * process all sub nodes and stop when we are back
153 * at the starting depth
158 /* only update direct childs */
160 (fdt_node_check_compatible(blob, off, "ns16550") == 0))
161 fdt_setprop(blob, off,
163 (void*)&(gd->uart_clk), 4);
167 * Fixup all ethernet nodes
168 * Note: aliases in the dts are required for this
170 fdt_fixup_ethernet(blob);
173 * Fixup all available PCIe nodes by setting the device_type property
175 fdt_pcie_setup(blob);
177 #endif /* CONFIG_OF_LIBFDT && CONFIG_OF_BOARD_SETUP */