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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>
222 lines
5.9 KiB
C
222 lines
5.9 KiB
C
/*
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* (C) Copyright 2009
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* Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
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*
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* Based on board/amcc/canyonlands/canyonlands.c
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* (C) Copyright 2008
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* Stefan Roese, DENX Software Engineering, sr@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 <asm/ppc440.h>
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#include <libfdt.h>
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#include <fdt_support.h>
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#include <i2c.h>
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#include <asm/processor.h>
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#include <asm/io.h>
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#include <asm/mmu.h>
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#include <asm/4xx_pcie.h>
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#include <asm/ppc4xx-gpio.h>
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extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
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DECLARE_GLOBAL_DATA_PTR;
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#define CONFIG_SYS_BCSR3_PCIE 0x10
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int board_early_init_f(void)
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{
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/*
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* Setup the interrupt controller polarities, triggers, etc.
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*/
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mtdcr(UIC0SR, 0xffffffff); /* clear all */
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mtdcr(UIC0ER, 0x00000000); /* disable all */
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mtdcr(UIC0CR, 0x00000005); /* ATI & UIC1 crit are critical */
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mtdcr(UIC0PR, 0xffffffff); /* per ref-board manual */
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mtdcr(UIC0TR, 0x00000000); /* per ref-board manual */
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mtdcr(UIC0VR, 0x00000000); /* int31 highest, base=0x000 */
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mtdcr(UIC0SR, 0xffffffff); /* clear all */
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mtdcr(UIC1SR, 0xffffffff); /* clear all */
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mtdcr(UIC1ER, 0x00000000); /* disable all */
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mtdcr(UIC1CR, 0x00000000); /* all non-critical */
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mtdcr(UIC1PR, 0xffffffff); /* per ref-board manual */
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mtdcr(UIC1TR, 0x00000000); /* per ref-board manual */
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mtdcr(UIC1VR, 0x00000000); /* int31 highest, base=0x000 */
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mtdcr(UIC1SR, 0xffffffff); /* clear all */
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mtdcr(UIC2SR, 0xffffffff); /* clear all */
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mtdcr(UIC2ER, 0x00000000); /* disable all */
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mtdcr(UIC2CR, 0x00000000); /* all non-critical */
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mtdcr(UIC2PR, 0xffffffff); /* per ref-board manual */
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mtdcr(UIC2TR, 0x00000000); /* per ref-board manual */
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mtdcr(UIC2VR, 0x00000000); /* int31 highest, base=0x000 */
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mtdcr(UIC2SR, 0xffffffff); /* clear all */
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mtdcr(UIC3SR, 0xffffffff); /* clear all */
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mtdcr(UIC3ER, 0x00000000); /* disable all */
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mtdcr(UIC3CR, 0x00000000); /* all non-critical */
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mtdcr(UIC3PR, 0xffffffff); /* per ref-board manual */
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mtdcr(UIC3TR, 0x00000000); /* per ref-board manual */
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mtdcr(UIC3VR, 0x00000000); /* int31 highest, base=0x000 */
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mtdcr(UIC3SR, 0xffffffff); /* clear all */
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/*
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* Configure PFC (Pin Function Control) registers
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* enable GPIO 49-63
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* UART0: 4 pins
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*/
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mtsdr(SDR0_PFC0, 0x00007fff);
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mtsdr(SDR0_PFC1, 0x00040000);
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/* Enable PCI host functionality in SDR0_PCI0 */
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mtsdr(SDR0_PCI0, 0xe0000000);
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mtsdr(SDR0_SRST1, 0); /* Pull AHB out of reset default=1 */
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/* Setup PLB4-AHB bridge based on the system address map */
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mtdcr(AHB_TOP, 0x8000004B);
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mtdcr(AHB_BOT, 0x8000004B);
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/*
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* Configure USB-STP pins as alternate and not GPIO
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* It seems to be neccessary to configure the STP pins as GPIO
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* input at powerup (perhaps while USB reset is asserted). So
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* we configure those pins to their "real" function now.
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*/
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gpio_config(16, GPIO_OUT, GPIO_ALT1, GPIO_OUT_1);
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gpio_config(19, GPIO_OUT, GPIO_ALT1, GPIO_OUT_1);
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/* Trigger board component reset */
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out_le16((void *)CONFIG_SYS_IO_BASE, 0xffff);
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out_le16((void *)CONFIG_SYS_IO_BASE + 0x100, 0xffff);
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udelay(50);
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out_le16((void *)CONFIG_SYS_IO_BASE, 0xffbf);
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out_le16((void *)CONFIG_SYS_IO_BASE + 0x100, 0xffbf);
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udelay(50);
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out_le16((void *)CONFIG_SYS_IO_BASE, 0xffff);
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out_le16((void *)CONFIG_SYS_IO_BASE + 0x100, 0xffff);
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return 0;
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}
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int get_cpu_num(void)
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{
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int cpu = NA_OR_UNKNOWN_CPU;
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return cpu;
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}
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int checkboard(void)
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{
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char buf[64];
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int i = getenv_f("serial#", buf, sizeof(buf));
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#ifdef CONFIG_DEVCONCENTER
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printf("Board: DevCon-Center");
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#else
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printf("Board: Intip");
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#endif
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if (i > 0) {
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puts(", serial# ");
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puts(buf);
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}
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putc('\n');
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return 0;
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}
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int board_early_init_r(void)
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{
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/*
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* CompactCenter has 64MBytes, DevCon-Center 128MBytes of NOR FLASH
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* (Spansion 29GL512), but the boot EBC mapping only supports a maximum
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* of 16MBytes (4.ff00.0000 - 4.ffff.ffff).
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* To solve this problem, the FLASH has to get remapped to another
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* EBC address which accepts bigger regions:
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*
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* 0xfn00.0000 -> 4.cn00.0000
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*/
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u32 bxcr_bw = (CONFIG_SYS_FLASH_SIZE == 128 << 20) ?
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EBC_BXCR_BS_128MB : EBC_BXCR_BS_64MB;
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/* Remap the NOR FLASH to 0xcn00.0000 ... 0xcfff.ffff */
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mtebc(PB0CR, CONFIG_SYS_FLASH_BASE_PHYS_L
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| bxcr_bw
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| EBC_BXCR_BU_RW
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| EBC_BXCR_BW_16BIT);
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/* Remove TLB entry of boot EBC mapping */
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remove_tlb(CONFIG_SYS_BOOT_BASE_ADDR, 16 << 20);
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/* Add TLB entry for 0xfn00.0000 -> 0x4.cn00.0000 */
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program_tlb(CONFIG_SYS_FLASH_BASE_PHYS, CONFIG_SYS_FLASH_BASE,
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CONFIG_SYS_FLASH_SIZE, TLB_WORD2_I_ENABLE);
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/*
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* Now accessing of the whole 64Mbytes of NOR FLASH at virtual address
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* 0xfc00.0000 is possible
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*/
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/*
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* Clear potential errors resulting from auto-calibration.
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* If not done, then we could get an interrupt later on when
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* exceptions are enabled.
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*/
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set_mcsr(get_mcsr());
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return 0;
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}
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int misc_init_r(void)
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{
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u32 sdr0_srst1 = 0;
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u32 eth_cfg;
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/*
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* Set EMAC mode/configuration (GMII, SGMII, RGMII...).
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* This is board specific, so let's do it here.
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*/
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mfsdr(SDR0_ETH_CFG, eth_cfg);
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/* disable SGMII mode */
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eth_cfg &= ~(SDR0_ETH_CFG_SGMII2_ENABLE |
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SDR0_ETH_CFG_SGMII1_ENABLE |
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SDR0_ETH_CFG_SGMII0_ENABLE);
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/* Set the for 2 RGMII mode */
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/* GMC0 EMAC4_0, GMC0 EMAC4_1, RGMII Bridge 0 */
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eth_cfg &= ~SDR0_ETH_CFG_GMC0_BRIDGE_SEL;
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eth_cfg |= SDR0_ETH_CFG_GMC1_BRIDGE_SEL;
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mtsdr(SDR0_ETH_CFG, eth_cfg);
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/*
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* The AHB Bridge core is held in reset after power-on or reset
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* so enable it now
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*/
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mfsdr(SDR0_SRST1, sdr0_srst1);
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sdr0_srst1 &= ~SDR0_SRST1_AHB;
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mtsdr(SDR0_SRST1, sdr0_srst1);
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return 0;
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}
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#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
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extern void __ft_board_setup(void *blob, bd_t *bd);
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int ft_board_setup(void *blob, bd_t *bd)
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{
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__ft_board_setup(blob, bd);
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fdt_find_and_setprop(blob, "/plb/pciex@d00000000", "status",
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"disabled", sizeof("disabled"), 1);
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fdt_find_and_setprop(blob, "/plb/sata@bffd1000", "status",
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"disabled", sizeof("disabled"), 1);
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return 0;
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}
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#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
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