1 /*
2  * Copyright 2009 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <common.h>
8 #include <asm/processor.h>
9 #include <asm/global_data.h>
10 #include <fsl_ifc.h>
11 #include <asm/io.h>
12 
13 DECLARE_GLOBAL_DATA_PTR;
14 
15 ulong cpu_init_f(void)
16 {
17 #ifdef CONFIG_SYS_INIT_L2_ADDR
18 	ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
19 
20 	out_be32(&l2cache->l2srbar0, CONFIG_SYS_INIT_L2_ADDR);
21 
22 	/* set MBECCDIS=1, SBECCDIS=1 */
23 	out_be32(&l2cache->l2errdis,
24 		(MPC85xx_L2ERRDIS_MBECC | MPC85xx_L2ERRDIS_SBECC));
25 
26 	/* set L2E=1 & L2SRAM=001 */
27 	out_be32(&l2cache->l2ctl,
28 		(MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2SRAM_ENTIRE));
29 #endif
30 
31 	return 0;
32 }
33 
34 #ifndef CONFIG_SYS_FSL_TBCLK_DIV
35 #define CONFIG_SYS_FSL_TBCLK_DIV 8
36 #endif
37 
38 void udelay(unsigned long usec)
39 {
40 	u32 ticks_per_usec = gd->bus_clk / (CONFIG_SYS_FSL_TBCLK_DIV * 1000000);
41 	u32 ticks = ticks_per_usec * usec;
42 	u32 s = mfspr(SPRN_TBRL);
43 
44 	while ((mfspr(SPRN_TBRL) - s) < ticks);
45 }
46