2 * Copyright 2009-2012 Freescale Semiconductor, Inc
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 #include <asm/processor.h>
23 #include <asm/fsl_law.h>
26 DECLARE_GLOBAL_DATA_PTR;
28 #if defined(CONFIG_SYS_FSL_ERRATUM_IFC_A003399) && !defined(CONFIG_SYS_RAMBOOT)
31 struct fsl_ifc *ifc_regs = (void *)CONFIG_SYS_IFC_ADDR;
32 u32 _mas0, _mas1, _mas2, _mas3, _mas7;
33 phys_addr_t flash_phys = CONFIG_SYS_FLASH_BASE_PHYS;
36 * Adjust the TLB we were running out of to match the phys addr of the
37 * chip select we are adjusting and will return to.
39 flash_phys += (~CONFIG_SYS_AMASK0) + 1 - 4*1024*1024;
41 _mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(15);
42 _mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_IPROT |
43 MAS1_TSIZE(BOOKE_PAGESZ_4M);
44 _mas2 = FSL_BOOKE_MAS2(CONFIG_SYS_TEXT_BASE, MAS2_I|MAS2_G);
45 _mas3 = FSL_BOOKE_MAS3(flash_phys, 0, MAS3_SW|MAS3_SR|MAS3_SX);
46 _mas7 = FSL_BOOKE_MAS7(flash_phys);
54 asm volatile("isync;msync;tlbwe;isync");
56 #if defined(CONFIG_SYS_PPC_E500_DEBUG_TLB)
58 * TLB entry for debuggging in AS1
59 * Create temporary TLB entry in AS0 to handle debug exception
60 * As on debug exception MSR is cleared i.e. Address space is changed
61 * to 0. A TLB entry (in AS0) is required to handle debug exception generated
64 * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
65 * bacause flash's physical address is going to change as
66 * CONFIG_SYS_FLASH_BASE_PHYS.
68 _mas0 = MAS0_TLBSEL(1) |
69 MAS0_ESEL(CONFIG_SYS_PPC_E500_DEBUG_TLB);
70 _mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_IPROT |
71 MAS1_TSIZE(BOOKE_PAGESZ_4M);
72 _mas2 = FSL_BOOKE_MAS2(CONFIG_SYS_TEXT_BASE, MAS2_I|MAS2_G);
73 _mas3 = FSL_BOOKE_MAS3(flash_phys, 0, MAS3_SW|MAS3_SR|MAS3_SX);
74 _mas7 = FSL_BOOKE_MAS7(flash_phys);
82 asm volatile("isync;msync;tlbwe;isync");
85 /* Change flash's physical address */
86 out_be32(&(ifc_regs->cspr_cs[0].cspr), CONFIG_SYS_CSPR0);
87 out_be32(&(ifc_regs->csor_cs[0].csor), CONFIG_SYS_CSOR0);
88 out_be32(&(ifc_regs->amask_cs[0].amask), CONFIG_SYS_AMASK0);
94 /* We run cpu_init_early_f in AS = 1 */
95 void cpu_init_early_f(void)
97 u32 mas0, mas1, mas2, mas3, mas7;
99 #ifdef CONFIG_SYS_FSL_ERRATUM_P1010_A003549
100 ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
102 #if defined(CONFIG_SYS_FSL_ERRATUM_IFC_A003399) && !defined(CONFIG_SYS_RAMBOOT)
103 ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
105 void (*setup_ifc_sram)(void);
108 /* Pointer is writable since we allocated a register for it */
109 gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
112 * Clear initial global data
113 * we don't use memset so we can share this code with NAND_SPL
115 for (i = 0; i < sizeof(gd_t); i++)
118 mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(13);
119 mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_TSIZE(BOOKE_PAGESZ_1M);
120 mas2 = FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G);
121 mas3 = FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS, 0, MAS3_SW|MAS3_SR);
122 mas7 = FSL_BOOKE_MAS7(CONFIG_SYS_CCSRBAR_PHYS);
124 write_tlb(mas0, mas1, mas2, mas3, mas7);
127 * Work Around for IFC Erratum A-003549. This issue is P1010
128 * specific. LCLK(a free running clk signal) is muxed with IFC_CS3 on P1010 SOC
129 * Hence specifically selecting CS3.
131 #ifdef CONFIG_SYS_FSL_ERRATUM_P1010_A003549
132 setbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_LCLK_IFC_CS3);
138 * Work Around for IFC Erratum A003399, issue will hit only when execution
141 #if defined(CONFIG_SYS_FSL_ERRATUM_IFC_A003399) && !defined(CONFIG_SYS_RAMBOOT)
142 #define SRAM_BASE_ADDR (0x00000000)
144 mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(9);
145 mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS |
146 MAS1_TSIZE(BOOKE_PAGESZ_1M);
147 mas2 = FSL_BOOKE_MAS2(SRAM_BASE_ADDR, MAS2_I);
148 mas3 = FSL_BOOKE_MAS3(SRAM_BASE_ADDR, 0, MAS3_SX|MAS3_SW|MAS3_SR);
149 mas7 = FSL_BOOKE_MAS7(0);
151 write_tlb(mas0, mas1, mas2, mas3, mas7);
153 out_be32(&l2cache->l2srbar0, SRAM_BASE_ADDR);
155 out_be32(&l2cache->l2errdis,
156 (MPC85xx_L2ERRDIS_MBECC | MPC85xx_L2ERRDIS_SBECC));
158 out_be32(&l2cache->l2ctl,
159 (MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2SRAM_ENTIRE));
162 * Copy the code in setup_ifc to L2SRAM. Do a word copy
163 * because NOR Flash on P1010 does not support byte
164 * access (Erratum IFC-A002769)
166 setup_ifc_sram = (void *)SRAM_BASE_ADDR;
167 dst = (u32 *) SRAM_BASE_ADDR;
168 src = (u32 *) setup_ifc;
169 for (i = 0; i < 1024; i++)
175 clrbits_be32(&l2cache->l2ctl,
177 MPC85xx_L2CTL_L2SRAM_ENTIRE));
178 out_be32(&l2cache->l2srbar0, 0x0);