2 * Copyright 2004,2009-2011 Freescale Semiconductor, Inc.
4 * Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
6 * SPDX-License-Identifier: GPL-2.0+
10 * cpu_init.c - low level cpu init
17 #include <asm/fsl_law.h>
18 #include <asm/fsl_serdes.h>
21 extern void srio_init(void);
23 DECLARE_GLOBAL_DATA_PTR;
26 * Breathe some life into the CPU...
28 * Set up the memory map
29 * initialize a bunch of registers
34 /* Pointer is writable since we allocated a register for it */
35 gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
37 /* Clear initial global data */
38 memset ((void *) gd, 0, sizeof (gd_t));
46 init_early_memctl_regs();
48 #if defined(CONFIG_FSL_DMA)
52 /* enable the timebase bit in HID0 */
53 set_hid0(get_hid0() | 0x4000000);
55 /* enable EMCP, SYNCBE | ABE bits in HID1 */
56 set_hid1(get_hid1() | 0x80000C00);
60 * initialize higher level parts of CPU like timers
64 /* needs to be in ram since code uses global static vars */
67 #ifdef CONFIG_SYS_SRIO
71 #if defined(CONFIG_MP)
77 #ifdef CONFIG_ADDR_MAP
78 /* Initialize address mapping array */
79 void init_addr_map(void)
82 ppc_bat_t bat = DBAT0;
84 unsigned long upper, lower;
86 for (i = 0; i < CONFIG_SYS_NUM_ADDR_MAP; i++, bat++) {
87 if (read_bat(bat, &upper, &lower) != -1) {
88 if (!BATU_VALID(upper))
91 size = BATU_SIZE(upper);
92 addrmap_set_entry(BATU_VADDR(upper), BATL_PADDR(lower),
95 #ifdef CONFIG_HIGH_BATS
96 /* High bats are not contiguous with low BAT numbers */