mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 17:08:52 +09:00
216 lines
6.7 KiB
C
216 lines
6.7 KiB
C
/*
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* (C) Copyright 2006
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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 <libfdt.h>
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#include <fdt_support.h>
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#include <spd_sdram.h>
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#include <asm/ppc4xx-emac.h>
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#include <miiphy.h>
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#include <asm/processor.h>
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#include <asm/4xx_pci.h>
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DECLARE_GLOBAL_DATA_PTR;
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extern int alpr_fpga_init(void);
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int board_early_init_f (void)
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{
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/*-------------------------------------------------------------------------
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* Initialize EBC CONFIG
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*-------------------------------------------------------------------------*/
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mtebc(EBC0_CFG, EBC_CFG_LE_UNLOCK |
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EBC_CFG_PTD_DISABLE | EBC_CFG_RTC_64PERCLK |
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EBC_CFG_ATC_PREVIOUS | EBC_CFG_DTC_PREVIOUS |
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EBC_CFG_CTC_PREVIOUS | EBC_CFG_EMC_NONDEFAULT |
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EBC_CFG_PME_DISABLE | EBC_CFG_PR_32);
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/*--------------------------------------------------------------------
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* Setup the interrupt controller polarities, triggers, etc.
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*-------------------------------------------------------------------*/
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/*
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* Because of the interrupt handling rework to handle 440GX interrupts
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* with the common code, we needed to change names of the UIC registers.
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* Here the new relationship:
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*
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* U-Boot name 440GX name
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* -----------------------
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* UIC0 UICB0
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* UIC1 UIC0
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* UIC2 UIC1
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* UIC3 UIC2
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*/
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mtdcr (UIC1SR, 0xffffffff); /* clear all */
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mtdcr (UIC1ER, 0x00000000); /* disable all */
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mtdcr (UIC1CR, 0x00000009); /* SMI & UIC1 crit are critical */
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mtdcr (UIC1PR, 0xfffffe03); /* per manual */
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mtdcr (UIC1TR, 0x01c00000); /* per manual */
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mtdcr (UIC1VR, 0x00000001); /* 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, 0xffffe0ff); /* per ref-board manual */
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mtdcr (UIC2TR, 0x00ffc000); /* per ref-board manual */
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mtdcr (UIC2VR, 0x00000001); /* 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, 0x00ff8c0f); /* per ref-board manual */
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mtdcr (UIC3VR, 0x00000001); /* int31 highest, base=0x000 */
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mtdcr (UIC3SR, 0xffffffff); /* clear all */
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mtdcr (UIC0SR, 0xfc000000); /* clear all */
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mtdcr (UIC0ER, 0x00000000); /* disable all */
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mtdcr (UIC0CR, 0x00000000); /* all non-critical */
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mtdcr (UIC0PR, 0xfc000000); /* */
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mtdcr (UIC0TR, 0x00000000); /* */
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mtdcr (UIC0VR, 0x00000001); /* */
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/* Setup shutdown/SSD empty interrupt as inputs */
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out32(GPIO0_TCR, in32(GPIO0_TCR) & ~(CONFIG_SYS_GPIO_SHUTDOWN | CONFIG_SYS_GPIO_SSD_EMPTY));
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out32(GPIO0_ODR, in32(GPIO0_ODR) & ~(CONFIG_SYS_GPIO_SHUTDOWN | CONFIG_SYS_GPIO_SSD_EMPTY));
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/* Setup GPIO/IRQ multiplexing */
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mtsdr(SDR0_PFC0, 0x01a33e00);
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return 0;
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}
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int last_stage_init(void)
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{
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unsigned short reg;
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/*
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* Configure LED's of both Marvell 88E1111 PHY's
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*
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* This has to be done after the 4xx ethernet driver is loaded,
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* so "last_stage_init()" is the right place.
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*/
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miiphy_read("ppc_4xx_eth2", CONFIG_PHY2_ADDR, 0x18, ®);
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reg |= 0x0001;
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miiphy_write("ppc_4xx_eth2", CONFIG_PHY2_ADDR, 0x18, reg);
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miiphy_read("ppc_4xx_eth3", CONFIG_PHY3_ADDR, 0x18, ®);
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reg |= 0x0001;
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miiphy_write("ppc_4xx_eth3", CONFIG_PHY3_ADDR, 0x18, reg);
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return 0;
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}
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static int board_rev(void)
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{
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/* Setup as input */
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out32(GPIO0_TCR, in32(GPIO0_TCR) & ~(CONFIG_SYS_GPIO_REV0 | CONFIG_SYS_GPIO_REV1));
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out32(GPIO0_ODR, in32(GPIO0_ODR) & ~(CONFIG_SYS_GPIO_REV0 | CONFIG_SYS_GPIO_REV1));
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return (in32(GPIO0_IR) >> 16) & 0x3;
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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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printf ("Board: ALPR");
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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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printf(" (Rev. %d)\n", board_rev());
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return (0);
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}
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#if defined(CONFIG_PCI)
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/*
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* Override weak pci_pre_init()
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*/
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int pci_pre_init(struct pci_controller *hose)
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{
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if (__pci_pre_init(hose) == 0)
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return 0;
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/* FPGA Init */
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alpr_fpga_init();
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return 1;
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}
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/*************************************************************************
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* Override weak is_pci_host()
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*
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* This routine is called to determine if a pci scan should be
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* performed. With various hardware environments (especially cPCI and
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* PPMC) it's insufficient to depend on the state of the arbiter enable
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* bit in the strap register, or generic host/adapter assumptions.
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*
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* Rather than hard-code a bad assumption in the general 440 code, the
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* 440 pci code requires the board to decide at runtime.
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*
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* Return 0 for adapter mode, non-zero for host (monarch) mode.
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*
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*
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************************************************************************/
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static void wait_for_pci_ready(void)
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{
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/*
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* Configure EREADY as input
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*/
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out32(GPIO0_TCR, in32(GPIO0_TCR) & ~CONFIG_SYS_GPIO_EREADY);
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udelay(1000);
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for (;;) {
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if (in32(GPIO0_IR) & CONFIG_SYS_GPIO_EREADY)
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return;
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}
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}
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int is_pci_host(struct pci_controller *hose)
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{
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wait_for_pci_ready();
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return 1; /* return 1 for host controller */
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}
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#endif /* defined(CONFIG_PCI) */
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/*************************************************************************
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* pci_master_init
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*
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************************************************************************/
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#if defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_MASTER_INIT)
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void pci_master_init(struct pci_controller *hose)
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{
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/*--------------------------------------------------------------------------+
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| PowerPC440 PCI Master configuration.
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| Map PLB/processor addresses to PCI memory space.
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| PLB address 0xA0000000-0xCFFFFFFF ==> PCI address 0x80000000-0xCFFFFFFF
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| Use byte reversed out routines to handle endianess.
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| Make this region non-prefetchable.
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+--------------------------------------------------------------------------*/
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out32r( PCIL0_POM0SA, 0 ); /* disable */
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out32r( PCIL0_POM1SA, 0 ); /* disable */
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out32r( PCIL0_POM2SA, 0 ); /* disable */
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out32r(PCIL0_POM0LAL, CONFIG_SYS_PCI_MEMBASE); /* PMM0 Local Address */
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out32r(PCIL0_POM0LAH, 0x00000003); /* PMM0 Local Address */
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out32r(PCIL0_POM0PCIAL, CONFIG_SYS_PCI_MEMBASE); /* PMM0 PCI Low Address */
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out32r(PCIL0_POM0PCIAH, 0x00000000); /* PMM0 PCI High Address */
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out32r(PCIL0_POM0SA, ~(0x10000000 - 1) | 1); /* 256MB + enable region */
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out32r(PCIL0_POM1LAL, CONFIG_SYS_PCI_MEMBASE2); /* PMM0 Local Address */
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out32r(PCIL0_POM1LAH, 0x00000003); /* PMM0 Local Address */
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out32r(PCIL0_POM1PCIAL, CONFIG_SYS_PCI_MEMBASE2); /* PMM0 PCI Low Address */
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out32r(PCIL0_POM1PCIAH, 0x00000000); /* PMM0 PCI High Address */
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out32r(PCIL0_POM1SA, ~(0x10000000 - 1) | 1); /* 256MB + enable region */
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}
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#endif /* defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_MASTER_INIT) */
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