/*
- * Copyright 2009 Freescale Semiconductor, Inc
+ * Copyright 2009-2012 Freescale Semiconductor, Inc
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
DECLARE_GLOBAL_DATA_PTR;
+#ifdef CONFIG_A003399_NOR_WORKAROUND
+void setup_ifc(void)
+{
+ struct fsl_ifc *ifc_regs = (void *)CONFIG_SYS_IFC_ADDR;
+ u32 _mas0, _mas1, _mas2, _mas3, _mas7;
+ phys_addr_t flash_phys = CONFIG_SYS_FLASH_BASE_PHYS;
+
+ /*
+ * Adjust the TLB we were running out of to match the phys addr of the
+ * chip select we are adjusting and will return to.
+ */
+ flash_phys += (~CONFIG_SYS_AMASK0) + 1 - 4*1024*1024;
+
+ _mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(15);
+ _mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_IPROT |
+ MAS1_TSIZE(BOOKE_PAGESZ_4M);
+ _mas2 = FSL_BOOKE_MAS2(CONFIG_SYS_TEXT_BASE, MAS2_I|MAS2_G);
+ _mas3 = FSL_BOOKE_MAS3(flash_phys, 0, MAS3_SW|MAS3_SR|MAS3_SX);
+ _mas7 = FSL_BOOKE_MAS7(flash_phys);
+
+ mtspr(MAS0, _mas0);
+ mtspr(MAS1, _mas1);
+ mtspr(MAS2, _mas2);
+ mtspr(MAS3, _mas3);
+ mtspr(MAS7, _mas7);
+
+ asm volatile("isync;msync;tlbwe;isync");
+
+#if defined(CONFIG_SYS_PPC_E500_DEBUG_TLB)
+/*
+ * TLB entry for debuggging in AS1
+ * Create temporary TLB entry in AS0 to handle debug exception
+ * As on debug exception MSR is cleared i.e. Address space is changed
+ * to 0. A TLB entry (in AS0) is required to handle debug exception generated
+ * in AS1.
+ *
+ * TLB entry is created for IVPR + IVOR15 to map on valid OP code address
+ * bacause flash's physical address is going to change as
+ * CONFIG_SYS_FLASH_BASE_PHYS.
+ */
+ _mas0 = MAS0_TLBSEL(1) |
+ MAS0_ESEL(CONFIG_SYS_PPC_E500_DEBUG_TLB);
+ _mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_IPROT |
+ MAS1_TSIZE(BOOKE_PAGESZ_4M);
+ _mas2 = FSL_BOOKE_MAS2(CONFIG_SYS_TEXT_BASE, MAS2_I|MAS2_G);
+ _mas3 = FSL_BOOKE_MAS3(flash_phys, 0, MAS3_SW|MAS3_SR|MAS3_SX);
+ _mas7 = FSL_BOOKE_MAS7(flash_phys);
+
+ mtspr(MAS0, _mas0);
+ mtspr(MAS1, _mas1);
+ mtspr(MAS2, _mas2);
+ mtspr(MAS3, _mas3);
+ mtspr(MAS7, _mas7);
+
+ asm volatile("isync;msync;tlbwe;isync");
+#endif
+
+ /* Change flash's physical address */
+ ifc_out32(&(ifc_regs->cspr_cs[0].cspr), CONFIG_SYS_CSPR0);
+ ifc_out32(&(ifc_regs->csor_cs[0].csor), CONFIG_SYS_CSOR0);
+ ifc_out32(&(ifc_regs->amask_cs[0].amask), CONFIG_SYS_AMASK0);
+
+ return ;
+}
+#endif
+
/* We run cpu_init_early_f in AS = 1 */
-void cpu_init_early_f(void)
+void cpu_init_early_f(void *fdt)
{
u32 mas0, mas1, mas2, mas3, mas7;
int i;
#ifdef CONFIG_SYS_FSL_ERRATUM_P1010_A003549
ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
#endif
+#ifdef CONFIG_A003399_NOR_WORKAROUND
+ ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
+ u32 *dst, *src;
+ void (*setup_ifc_sram)(void);
+#endif
/* Pointer is writable since we allocated a register for it */
gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
for (i = 0; i < sizeof(gd_t); i++)
((char *)gd)[i] = 0;
+#ifdef CONFIG_QEMU_E500
+ /*
+ * CONFIG_SYS_CCSRBAR_PHYS below may use gd->fdt_blob on ePAPR systems,
+ * so we need to populate it before it accesses it.
+ */
+ gd->fdt_blob = fdt;
+#endif
+
mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(13);
mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS | MAS1_TSIZE(BOOKE_PAGESZ_1M);
mas2 = FSL_BOOKE_MAS2(CONFIG_SYS_CCSRBAR, MAS2_I|MAS2_G);
#endif
init_laws();
+
+/*
+ * Work Around for IFC Erratum A003399, issue will hit only when execution
+ * from NOR Flash
+ */
+#ifdef CONFIG_A003399_NOR_WORKAROUND
+#define SRAM_BASE_ADDR (0x00000000)
+ /* TLB for SRAM */
+ mas0 = MAS0_TLBSEL(1) | MAS0_ESEL(9);
+ mas1 = MAS1_VALID | MAS1_TID(0) | MAS1_TS |
+ MAS1_TSIZE(BOOKE_PAGESZ_1M);
+ mas2 = FSL_BOOKE_MAS2(SRAM_BASE_ADDR, MAS2_I);
+ mas3 = FSL_BOOKE_MAS3(SRAM_BASE_ADDR, 0, MAS3_SX|MAS3_SW|MAS3_SR);
+ mas7 = FSL_BOOKE_MAS7(0);
+
+ write_tlb(mas0, mas1, mas2, mas3, mas7);
+
+ out_be32(&l2cache->l2srbar0, SRAM_BASE_ADDR);
+
+ out_be32(&l2cache->l2errdis,
+ (MPC85xx_L2ERRDIS_MBECC | MPC85xx_L2ERRDIS_SBECC));
+
+ out_be32(&l2cache->l2ctl,
+ (MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2SRAM_ENTIRE));
+
+ /*
+ * Copy the code in setup_ifc to L2SRAM. Do a word copy
+ * because NOR Flash on P1010 does not support byte
+ * access (Erratum IFC-A002769)
+ */
+ setup_ifc_sram = (void *)SRAM_BASE_ADDR;
+ dst = (u32 *) SRAM_BASE_ADDR;
+ src = (u32 *) setup_ifc;
+ for (i = 0; i < 1024; i++) {
+ /* cppcheck-suppress nullPointer */
+ *dst++ = *src++;
+ }
+
+ /* cppcheck-suppress nullPointer */
+ setup_ifc_sram();
+
+ /* CLEANUP */
+ clrbits_be32(&l2cache->l2ctl,
+ (MPC85xx_L2CTL_L2E |
+ MPC85xx_L2CTL_L2SRAM_ENTIRE));
+ out_be32(&l2cache->l2srbar0, 0x0);
+#endif
+
invalidate_tlb(1);
+
+#if defined(CONFIG_SYS_PPC_E500_DEBUG_TLB) && \
+ !(defined(CONFIG_SPL_INIT_MINIMAL) && defined(CONFIG_SPL_BUILD)) && \
+ !defined(CONFIG_NAND_SPL)
+ disable_tlb(CONFIG_SYS_PPC_E500_DEBUG_TLB);
+#endif
+
init_tlbs();
}
projects / karo-tx-uboot.git / blobdiff