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https://github.com/brain-hackers/u-boot-brain
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![Simon Glass](/assets/img/avatar_default.png)
This function can fail if the device tree runs out of space. Rather than silently booting with an incomplete device tree, allow the failure to be detected. Unfortunately this involves changing a lot of places in the code. I have not changed behvaiour to return an error where one is not currently returned, to avoid unexpected breakage. Eventually it would be nice to allow boards to register functions to be called to update the device tree. This would avoid all the many functions to do this. However it's not clear yet if this should be done using driver model or with a linker list. This work is left for later. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Anatolij Gustschin <agust@denx.de>
205 lines
5.1 KiB
C
205 lines
5.1 KiB
C
/*
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* Copyright (C) Freescale Semiconductor, Inc. 2006-2007
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*
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* Author: Scott Wood <scottwood@freescale.com>
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*
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* (C) Copyright 2010
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* Heiko Schocher, DENX Software Engineering, hs@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <libfdt.h>
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#include <pci.h>
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#include <mpc83xx.h>
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#include <ns16550.h>
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#include <nand.h>
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#include <asm/bitops.h>
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#include <asm/io.h>
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DECLARE_GLOBAL_DATA_PTR;
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extern void disable_addr_trans (void);
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extern void enable_addr_trans (void);
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int checkboard(void)
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{
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puts("Board: ve8313\n");
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return 0;
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}
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static long fixed_sdram(void)
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{
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u32 msize = CONFIG_SYS_DDR_SIZE * 1024 * 1024;
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#ifndef CONFIG_SYS_RAMBOOT
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volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
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u32 msize_log2 = __ilog2(msize);
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out_be32(&im->sysconf.ddrlaw[0].bar,
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(CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000));
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out_be32(&im->sysconf.ddrlaw[0].ar, (LBLAWAR_EN | (msize_log2 - 1)));
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out_be32(&im->sysconf.ddrcdr, CONFIG_SYS_DDRCDR_VALUE);
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/*
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* Erratum DDR3 requires a 50ms delay after clearing DDRCDR[DDR_cfg],
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* or the DDR2 controller may fail to initialize correctly.
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*/
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__udelay(50000);
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#if ((CONFIG_SYS_DDR_SDRAM_BASE & 0x00FFFFFF) != 0)
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#warning Chip select bounds is only configurable in 16MB increments
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#endif
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out_be32(&im->ddr.csbnds[0].csbnds,
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((CONFIG_SYS_DDR_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
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(((CONFIG_SYS_DDR_SDRAM_BASE + msize - 1) >> CSBNDS_EA_SHIFT) &
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CSBNDS_EA));
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out_be32(&im->ddr.cs_config[0], CONFIG_SYS_DDR_CS0_CONFIG);
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/* Currently we use only one CS, so disable the other bank. */
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out_be32(&im->ddr.cs_config[1], 0);
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out_be32(&im->ddr.sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CNTL);
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out_be32(&im->ddr.timing_cfg_3, CONFIG_SYS_DDR_TIMING_3);
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out_be32(&im->ddr.timing_cfg_1, CONFIG_SYS_DDR_TIMING_1);
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out_be32(&im->ddr.timing_cfg_2, CONFIG_SYS_DDR_TIMING_2);
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out_be32(&im->ddr.timing_cfg_0, CONFIG_SYS_DDR_TIMING_0);
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out_be32(&im->ddr.sdram_cfg, CONFIG_SYS_SDRAM_CFG);
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out_be32(&im->ddr.sdram_cfg2, CONFIG_SYS_SDRAM_CFG2);
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out_be32(&im->ddr.sdram_mode, CONFIG_SYS_DDR_MODE);
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out_be32(&im->ddr.sdram_mode2, CONFIG_SYS_DDR_MODE_2);
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out_be32(&im->ddr.sdram_interval, CONFIG_SYS_DDR_INTERVAL);
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sync();
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/* enable DDR controller */
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setbits_be32(&im->ddr.sdram_cfg, SDRAM_CFG_MEM_EN);
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/* now check the real size */
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disable_addr_trans ();
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msize = get_ram_size (CONFIG_SYS_DDR_BASE, msize);
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enable_addr_trans ();
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#endif
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return msize;
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}
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phys_size_t initdram(int board_type)
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{
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volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
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volatile fsl_lbc_t *lbc = &im->im_lbc;
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u32 msize;
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if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
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return -1;
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/* DDR SDRAM - Main SODIMM */
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msize = fixed_sdram();
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/* Local Bus setup lbcr and mrtpr */
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out_be32(&lbc->lbcr, CONFIG_SYS_LBC_LBCR);
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out_be32(&lbc->mrtpr, CONFIG_SYS_LBC_MRTPR);
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sync();
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/* return total bus SDRAM size(bytes) -- DDR */
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return msize;
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}
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#define VE8313_WDT_EN 0x00020000
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#define VE8313_WDT_TRIG 0x00040000
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int board_early_init_f (void)
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{
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volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
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volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)im->gpio;
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#if defined(CONFIG_HW_WATCHDOG)
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/* enable WDT */
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clrbits_be32(&gpio->dat, VE8313_WDT_EN | VE8313_WDT_TRIG);
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#else
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/* disable WDT */
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setbits_be32(&gpio->dat, VE8313_WDT_EN | VE8313_WDT_TRIG);
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#endif
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/* set WDT pins as output */
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setbits_be32(&gpio->dir, VE8313_WDT_EN | VE8313_WDT_TRIG);
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return 0;
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}
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#if defined(CONFIG_HW_WATCHDOG)
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void hw_watchdog_reset(void)
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{
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volatile immap_t *im = (volatile immap_t *)CONFIG_SYS_IMMR;
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volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)im->gpio;
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unsigned long reg;
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reg = in_be32(&gpio->dat);
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if (reg & VE8313_WDT_TRIG)
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clrbits_be32(&gpio->dat, VE8313_WDT_TRIG);
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else
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setbits_be32(&gpio->dat, VE8313_WDT_TRIG);
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}
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#endif
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#if defined(CONFIG_PCI)
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static struct pci_region pci_regions[] = {
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{
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bus_start: CONFIG_SYS_PCI1_MEM_BASE,
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phys_start: CONFIG_SYS_PCI1_MEM_PHYS,
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size: CONFIG_SYS_PCI1_MEM_SIZE,
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flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
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},
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{
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bus_start: CONFIG_SYS_PCI1_MMIO_BASE,
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phys_start: CONFIG_SYS_PCI1_MMIO_PHYS,
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size: CONFIG_SYS_PCI1_MMIO_SIZE,
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flags: PCI_REGION_MEM
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},
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{
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bus_start: CONFIG_SYS_PCI1_IO_BASE,
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phys_start: CONFIG_SYS_PCI1_IO_PHYS,
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size: CONFIG_SYS_PCI1_IO_SIZE,
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flags: PCI_REGION_IO
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}
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};
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void pci_init_board(void)
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{
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volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
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volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
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volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
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struct pci_region *reg[] = { pci_regions };
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/* Enable all 3 PCI_CLK_OUTPUTs. */
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setbits_be32(&clk->occr, 0xe0000000);
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/*
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* Configure PCI Local Access Windows
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*/
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out_be32(&pci_law[0].bar, CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR);
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out_be32(&pci_law[0].ar, LBLAWAR_EN | LBLAWAR_512MB);
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out_be32(&pci_law[1].bar, CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR);
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out_be32(&pci_law[1].ar, LBLAWAR_EN | LBLAWAR_1MB);
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mpc83xx_pci_init(1, reg);
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}
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#endif
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#if defined(CONFIG_OF_BOARD_SETUP)
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int ft_board_setup(void *blob, bd_t *bd)
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{
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ft_cpu_setup(blob, bd);
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#ifdef CONFIG_PCI
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ft_pci_setup(blob, bd);
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#endif
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return 0;
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}
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#endif
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