mirror of
https://github.com/AsahiLinux/u-boot
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1f90be6f34
CPLD's system reset register on P1/P2 RDB boards is not autocleared after flipping it. If this register is set to one in 100ms after reset starts then CPLD triggers another CPU reset. This means that trying to reset board via CPLD system reset register cause reboot loop. To prevent this reboot loop, the only workaround is to try to clear CPLD's system reset register as early as possible. U-Boot is already doing it in its board_early_init_f() function, which seems to be enough as register is cleared prior CPLD triggers another reset. But board_early_init_f() is not called from SPL and therefore usage of SPL can cause reboot loop. To prevent reboot loop when using SPL, call board_early_init_f() function in SPL too. For accessing CPLD memory space it is needed to have CPLD entry in TLB. With this change it is possible to trigger board reset via CPLD's system reset register on P2020 RDB board. Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Peng Fan <peng.fan@nxp.com>
106 lines
3.3 KiB
C
106 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2010-2011 Freescale Semiconductor, Inc.
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*/
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#include <common.h>
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#include <asm/mmu.h>
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struct fsl_e_tlb_entry tlb_table[] = {
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/* TLB 0 - for temp stack in cache */
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SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR,
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CONFIG_SYS_INIT_RAM_ADDR_PHYS,
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MAS3_SX|MAS3_SW|MAS3_SR, 0,
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0, 0, BOOKE_PAGESZ_4K, 0),
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SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 4 * 1024 ,
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CONFIG_SYS_INIT_RAM_ADDR_PHYS + 4 * 1024,
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MAS3_SX|MAS3_SW|MAS3_SR, 0,
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0, 0, BOOKE_PAGESZ_4K, 0),
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SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 8 * 1024 ,
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CONFIG_SYS_INIT_RAM_ADDR_PHYS + 8 * 1024,
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MAS3_SX|MAS3_SW|MAS3_SR, 0,
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0, 0, BOOKE_PAGESZ_4K, 0),
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SET_TLB_ENTRY(0, CONFIG_SYS_INIT_RAM_ADDR + 12 * 1024 ,
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CONFIG_SYS_INIT_RAM_ADDR_PHYS + 12 * 1024,
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MAS3_SX|MAS3_SW|MAS3_SR, 0,
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0, 0, BOOKE_PAGESZ_4K, 0),
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/* TLB 1 */
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/* *I*** - Covers boot page */
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SET_TLB_ENTRY(1, 0xfffff000, 0xfffff000,
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MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I,
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0, 0, BOOKE_PAGESZ_4K, 1),
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/* *I*G* - CCSRBAR */
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SET_TLB_ENTRY(1, CONFIG_SYS_CCSRBAR, CONFIG_SYS_CCSRBAR_PHYS,
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MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
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0, 1, BOOKE_PAGESZ_1M, 1),
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#ifndef CONFIG_SPL_BUILD
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/* W**G* - Flash/promjet, localbus */
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/* This will be changed to *I*G* after relocation to RAM. */
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SET_TLB_ENTRY(1, CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE_PHYS,
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MAS3_SX|MAS3_SR, MAS2_W|MAS2_G,
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0, 2, BOOKE_PAGESZ_64M, 1),
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#ifdef CONFIG_PCI
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/* *I*G* - PCI memory 1.5G */
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SET_TLB_ENTRY(1, CONFIG_SYS_PCIE1_MEM_VIRT, CONFIG_SYS_PCIE1_MEM_PHYS,
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MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
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0, 3, BOOKE_PAGESZ_1G, 1),
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/* *I*G* - PCI I/O effective: 192K */
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SET_TLB_ENTRY(1, CONFIG_SYS_PCIE1_IO_VIRT, CONFIG_SYS_PCIE1_IO_PHYS,
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MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
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0, 4, BOOKE_PAGESZ_256K, 1),
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#endif
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#ifdef CONFIG_VSC7385_ENET
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/* *I*G - VSC7385 Switch */
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SET_TLB_ENTRY(1, CONFIG_SYS_VSC7385_BASE, CONFIG_SYS_VSC7385_BASE_PHYS,
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MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
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0, 5, BOOKE_PAGESZ_1M, 1),
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#endif
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#endif /* not SPL */
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SET_TLB_ENTRY(1, CONFIG_SYS_CPLD_BASE, CONFIG_SYS_CPLD_BASE_PHYS,
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MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
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0, 6, BOOKE_PAGESZ_1M, 1),
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#ifdef CONFIG_SYS_NAND_BASE
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/* *I*G - NAND */
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SET_TLB_ENTRY(1, CONFIG_SYS_NAND_BASE, CONFIG_SYS_NAND_BASE_PHYS,
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MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
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0, 7, BOOKE_PAGESZ_1M, 1),
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#endif
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#if defined(CONFIG_SYS_RAMBOOT) || !CONFIG_IS_ENABLED(COMMON_INIT_DDR)
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/* **M** - 1G DDR for eSDHC/eSPI/NAND boot */
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SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE, CONFIG_SYS_DDR_SDRAM_BASE,
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MAS3_SX|MAS3_SW|MAS3_SR, MAS2_M,
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0, 8, BOOKE_PAGESZ_1G, 1),
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#if defined(CONFIG_TARGET_P1020RDB_PD)
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/* **M** - 2G DDR on P1020MBG, map the second 1G */
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SET_TLB_ENTRY(1, CONFIG_SYS_DDR_SDRAM_BASE + 0x40000000,
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CONFIG_SYS_DDR_SDRAM_BASE + 0x40000000,
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MAS3_SX|MAS3_SW|MAS3_SR, MAS2_M,
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0, 9, BOOKE_PAGESZ_1G, 1),
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#endif
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#endif /* RAMBOOT/SPL */
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#ifdef CONFIG_SYS_INIT_L2_ADDR
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/* ***G - L2SRAM */
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SET_TLB_ENTRY(1, CONFIG_SYS_INIT_L2_ADDR, CONFIG_SYS_INIT_L2_ADDR_PHYS,
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MAS3_SX|MAS3_SW|MAS3_SR, MAS2_G,
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0, 11, BOOKE_PAGESZ_256K, 1),
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#if CONFIG_SYS_L2_SIZE >= (256 << 10)
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SET_TLB_ENTRY(1, CONFIG_SYS_INIT_L2_ADDR + 0x40000,
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CONFIG_SYS_INIT_L2_ADDR_PHYS + 0x40000,
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MAS3_SX|MAS3_SW|MAS3_SR, MAS2_G,
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0, 12, BOOKE_PAGESZ_256K, 1)
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#endif
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#endif
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};
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int num_tlb_entries = ARRAY_SIZE(tlb_table);
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