u-boot/arch/powerpc/cpu/mpc85xx/cpu_init_early.c
Prabhakar Kushwaha aa5a3d8d46 powerpc/mpc85xx: Use IFC accessor function
IFC registers can be of type Little Endian or big Endian depending upon
Freescale SoC. Here SoC defines the register type of IFC IP.

So use IFC acessor functions instead of in_be32().

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
2014-11-14 11:12:14 -08:00

188 lines
5.2 KiB
C

/*
* Copyright 2009-2012 Freescale Semiconductor, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/processor.h>
#include <asm/mmu.h>
#include <asm/fsl_law.h>
#include <asm/io.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 *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);
/*
* Clear initial global data
* we don't use memset so we can share this code with NAND_SPL
*/
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);
mas3 = FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS, 0, MAS3_SW|MAS3_SR);
mas7 = FSL_BOOKE_MAS7(CONFIG_SYS_CCSRBAR_PHYS);
write_tlb(mas0, mas1, mas2, mas3, mas7);
/*
* Work Around for IFC Erratum A-003549. This issue is P1010
* specific. LCLK(a free running clk signal) is muxed with IFC_CS3 on P1010 SOC
* Hence specifically selecting CS3.
*/
#ifdef CONFIG_SYS_FSL_ERRATUM_P1010_A003549
setbits_be32(&gur->pmuxcr, MPC85xx_PMUXCR_LCLK_IFC_CS3);
#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();
}