u-boot-brain/board/keymile/km83xx/km83xx.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2006 Freescale Semiconductor, Inc.
 *                    Dave Liu <daveliu@freescale.com>
 *
 * Copyright (C) 2007 Logic Product Development, Inc.
 *                    Peter Barada <peterb@logicpd.com>
 *
 * Copyright (C) 2007 MontaVista Software, Inc.
 *                    Anton Vorontsov <avorontsov@ru.mvista.com>
 *
 * (C) Copyright 2008 - 2010
 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
 */

#include <common.h>
#include <env.h>
#include <fdt_support.h>
#include <init.h>
#include <ioports.h>
#include <log.h>
#include <mpc83xx.h>
#include <i2c.h>
#include <miiphy.h>
#include <asm/io.h>
#include <asm/mmu.h>
#include <asm/processor.h>
#include <pci.h>
#include <linux/delay.h>
#include <linux/libfdt.h>
#include <post.h>

#include "../common/common.h"

DECLARE_GLOBAL_DATA_PTR;

static uchar ivm_content[CONFIG_SYS_IVM_EEPROM_MAX_LEN];

static int piggy_present(void)
{
	struct km_bec_fpga __iomem *base =
		(struct km_bec_fpga __iomem *)CONFIG_SYS_KMBEC_FPGA_BASE;

	return in_8(&base->bprth) & PIGGY_PRESENT;
}

int ethernet_present(void)
{
	return piggy_present();
}

int board_early_init_r(void)
{
	struct km_bec_fpga *base =
		(struct km_bec_fpga *)CONFIG_SYS_KMBEC_FPGA_BASE;

#if defined(CONFIG_ARCH_MPC8360)
	unsigned short	svid;
	/*
	 * Because of errata in the UCCs, we have to write to the reserved
	 * registers to slow the clocks down.
	 */
	svid =  SVR_REV(mfspr(SVR));
	switch (svid) {
	case 0x0020:
		/*
		 * MPC8360ECE.pdf QE_ENET10 table 4:
		 * IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2)
		 * IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1)
		 */
		setbits_be32((void *)(CONFIG_SYS_IMMR + 0x14a8), 0x0c003000);
		break;
	case 0x0021:
		/*
		 * MPC8360ECE.pdf QE_ENET10 table 4:
		 * IMMR + 0x14AC[24:27] = 1010
		 */
		clrsetbits_be32((void *)(CONFIG_SYS_IMMR + 0x14ac),
			0x00000050, 0x000000a0);
		break;
	}
#endif

	/* enable the PHY on the PIGGY */
	setbits_8(&base->pgy_eth, 0x01);
	/* enable the Unit LED (green) */
	setbits_8(&base->oprth, WRL_BOOT);
	/* enable Application Buffer */
	setbits_8(&base->oprtl, OPRTL_XBUFENA);

	return 0;
}

int misc_init_r(void)
{
	ivm_read_eeprom(ivm_content, CONFIG_SYS_IVM_EEPROM_MAX_LEN,
			CONFIG_PIGGY_MAC_ADDRESS_OFFSET);
	return 0;
}

int last_stage_init(void)
{
#if defined(CONFIG_TARGET_KMCOGE5NE)
	struct bfticu_iomap *base =
		(struct bfticu_iomap *)CONFIG_SYS_BFTIC3_BASE;
	u8 dip_switch = in_8((u8 *)&(base->mswitch)) & BFTICU_DIPSWITCH_MASK;

	if (dip_switch != 0) {
		/* start bootloader */
		puts("DIP:   Enabled\n");
		env_set("actual_bank", "0");
	}
#endif
	set_km_env();
	return 0;
}

static int fixed_sdram(void)
{
	immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
	u32 msize = 0;
	u32 ddr_size;
	u32 ddr_size_log2;

	out_be32(&im->sysconf.ddrlaw[0].ar, (LAWAR_EN | 0x1e));
	out_be32(&im->ddr.csbnds[0].csbnds, (CONFIG_SYS_DDR_CS0_BNDS) | 0x7f);
	out_be32(&im->ddr.cs_config[0], CONFIG_SYS_DDR_CS0_CONFIG);
	out_be32(&im->ddr.timing_cfg_0, CONFIG_SYS_DDR_TIMING_0);
	out_be32(&im->ddr.timing_cfg_1, CONFIG_SYS_DDR_TIMING_1);
	out_be32(&im->ddr.timing_cfg_2, CONFIG_SYS_DDR_TIMING_2);
	out_be32(&im->ddr.timing_cfg_3, CONFIG_SYS_DDR_TIMING_3);
	out_be32(&im->ddr.sdram_cfg, CONFIG_SYS_DDR_SDRAM_CFG);
	out_be32(&im->ddr.sdram_cfg2, CONFIG_SYS_DDR_SDRAM_CFG2);
	out_be32(&im->ddr.sdram_mode, CONFIG_SYS_DDR_MODE);
	out_be32(&im->ddr.sdram_mode2, CONFIG_SYS_DDR_MODE2);
	out_be32(&im->ddr.sdram_interval, CONFIG_SYS_DDR_INTERVAL);
	out_be32(&im->ddr.sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CNTL);
	udelay(200);
	setbits_be32(&im->ddr.sdram_cfg, SDRAM_CFG_MEM_EN);

	msize = CONFIG_SYS_DDR_SIZE << 20;
	disable_addr_trans();
	msize = get_ram_size(CONFIG_SYS_SDRAM_BASE, msize);
	enable_addr_trans();
	msize /= (1024 * 1024);
	if (CONFIG_SYS_DDR_SIZE != msize) {
		for (ddr_size = msize << 20, ddr_size_log2 = 0;
			(ddr_size > 1);
			ddr_size = ddr_size >> 1, ddr_size_log2++)
			if (ddr_size & 1)
				return -1;
		out_be32(&im->sysconf.ddrlaw[0].ar,
			(LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE)));
		out_be32(&im->ddr.csbnds[0].csbnds,
			(((msize / 16) - 1) & 0xff));
	}

	return msize;
}

int dram_init(void)
{
	immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
	u32 msize = 0;

	if ((in_be32(&im->sysconf.immrbar) & IMMRBAR_BASE_ADDR) != (u32)im)
		return -ENXIO;

	out_be32(&im->sysconf.ddrlaw[0].bar,
		CONFIG_SYS_SDRAM_BASE & LAWBAR_BAR);
	msize = fixed_sdram();

#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
	/*
	 * Initialize DDR ECC byte
	 */
	ddr_enable_ecc(msize * 1024 * 1024);
#endif

	/* return total bus SDRAM size(bytes)  -- DDR */
	gd->ram_size = msize * 1024 * 1024;

	return 0;
}

int checkboard(void)
{
	puts("Board: ABB " CONFIG_SYS_CONFIG_NAME);

	if (piggy_present())
		puts(" with PIGGY.");
	puts("\n");
	return 0;
}

int ft_board_setup(void *blob, struct bd_info *bd)
{
	ft_cpu_setup(blob, bd);

	return 0;
}

#if defined(CONFIG_HUSH_INIT_VAR)
int hush_init_var(void)
{
	ivm_analyze_eeprom(ivm_content, CONFIG_SYS_IVM_EEPROM_MAX_LEN);
	return 0;
}
#endif

#if defined(CONFIG_POST)
int post_hotkeys_pressed(void)
{
	int testpin = 0;
	struct km_bec_fpga *base =
		(struct km_bec_fpga *)CONFIG_SYS_KMBEC_FPGA_BASE;
	int testpin_reg = in_8(&base->CONFIG_TESTPIN_REG);
	testpin = (testpin_reg & CONFIG_TESTPIN_MASK) != 0;
	debug("post_hotkeys_pressed: %d\n", !testpin);
	return testpin;
}

ulong post_word_load(void)
{
	void* addr = (ulong *) (CPM_POST_WORD_ADDR);
	debug("post_word_load 0x%08lX:  0x%08X\n", (ulong)addr, in_le32(addr));
	return in_le32(addr);

}
void post_word_store(ulong value)
{
	void* addr = (ulong *) (CPM_POST_WORD_ADDR);
	debug("post_word_store 0x%08lX: 0x%08lX\n", (ulong)addr, value);
	out_le32(addr, value);
}

int arch_memory_test_prepare(u32 *vstart, u32 *size, phys_addr_t *phys_offset)
{
	/*
	 * These match CONFIG_SYS_MEMTEST_START and
	 * (CONFIG_SYS_MEMTEST_END - CONFIG_SYS_MEMTEST_START)
	 */
	*vstart = 0x00100000;
	*size = 0xe00000;
	debug("arch_memory_test_prepare 0x%08X 0x%08X\n", *vstart, *size);

	return 0;
}
#endif