upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/board/exmeritus/hww1u1a/hww1u1a.c

268 lines
6.4 KiB

/*
* Copyright 2009-2011 eXMeritus, A Boeing Company
* Copyright 2007-2009 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
#include <pci.h>
#include <asm/processor.h>
#include <asm/mmu.h>
#include <asm/cache.h>
#include <asm/immap_85xx.h>
#include <asm/fsl_pci.h>
#include <fsl_ddr_sdram.h>
#include <asm/io.h>
#include <miiphy.h>
#include <libfdt.h>
#include <linux/ctype.h>
#include <fdt_support.h>
#include <fsl_mdio.h>
#include <tsec.h>
#include <asm/fsl_law.h>
#include <netdev.h>
#include <malloc.h>
#include <i2c.h>
#include <pca953x.h>
#include "gpios.h"
DECLARE_GLOBAL_DATA_PTR;
int checkboard(void)
{
unsigned int gpio_high = 0;
unsigned int gpio_low = 0;
unsigned int gpio_in = 0;
unsigned int i;
struct ccsr_ddr __iomem *ddr;
puts("Board: HWW-1U-1A ");
/*
* First just figure out which CPU we're on, then use that to
* configure the lists of other GPIOs to be programmed.
*/
mpc85xx_gpio_set_in(GPIO_CPU_ID);
if (hww1u1a_is_cpu_a()) {
puts("CPU A\n");
/* We want to turn on some LEDs */
gpio_high |= GPIO_CPUA_CPU_READY;
gpio_low |= GPIO_CPUA_DEBUG_LED1;
gpio_low |= GPIO_CPUA_DEBUG_LED2;
/* Disable the unused transmitters */
gpio_low |= GPIO_CPUA_TDIS1A;
gpio_high |= GPIO_CPUA_TDIS1B;
gpio_low |= GPIO_CPUA_TDIS2A;
gpio_high |= GPIO_CPUA_TDIS2B;
} else {
puts("CPU B\n");
/* We want to turn on some LEDs */
gpio_high |= GPIO_CPUB_CPU_READY;
gpio_low |= GPIO_CPUB_DEBUG_LED1;
gpio_low |= GPIO_CPUB_DEBUG_LED2;
/* Enable the appropriate receivers */
gpio_high |= GPIO_CPUB_RMUX_SEL0A;
gpio_high |= GPIO_CPUB_RMUX_SEL0B;
gpio_low |= GPIO_CPUB_RMUX_SEL1A;
gpio_low |= GPIO_CPUB_RMUX_SEL1B;
}
/* These GPIOs are common */
gpio_in |= IRQ_I2CINT | IRQ_FANINT | IRQ_DIMM_EVENT;
gpio_low |= GPIO_RS422_RE;
gpio_high |= GPIO_RS422_DE;
/* Ok, now go ahead and program all of those in one go */
mpc85xx_gpio_set(gpio_high|gpio_low|gpio_in,
gpio_high|gpio_low,
gpio_high);
/*
* If things have been taken out of reset early (for example, by one
* of the BDI3000 debuggers), then we need to put them back in reset
* and delay a while before we continue.
*/
if (mpc85xx_gpio_get(GPIO_RESETS)) {
ddr = (struct ccsr_ddr __iomem *)CONFIG_SYS_FSL_DDR_ADDR;
puts("Debugger detected... extra device reset enabled!\n");
/* Put stuff into reset and disable the DDR controller */
mpc85xx_gpio_set_low(GPIO_RESETS);
out_be32(&ddr->sdram_cfg, 0x00000000);
puts(" Waiting 1 sec for reset...");
for (i = 0; i < 10; i++) {
udelay(100000);
puts(".");
}
puts("\n");
}
/* Now bring everything back out of reset again */
mpc85xx_gpio_set_high(GPIO_RESETS);
return 0;
}
/*
* This little shell function just returns whether or not it's CPU A.
* It can be used to select the right device-tree when booting, etc.
*/
int do_hww1u1a_test_cpu_a(cmd_tbl_t *cmdtp, int flag,
int argc, char * const argv[])
{
if (argc > 1)
cmd_usage(cmdtp);
if (hww1u1a_is_cpu_a())
return 0;
else
return 1;
}
U_BOOT_CMD(
test_cpu_a, 1, 0, do_hww1u1a_test_cpu_a,
"Test if this is CPU A (versus B) on the eXMeritus HWW-1U-1A board",
""
);
/* Create a prompt-like string: "uboot@HOSTNAME% " */
#define PROMPT_PREFIX "uboot@exm"
#define PROMPT_SUFFIX "% "
/* This function returns a PS1 prompt based on the serial number */
static char *hww1u1a_prompt;
const char *hww1u1a_get_ps1(void)
{
unsigned long len, i, j;
const char *serialnr;
/* If our prompt was already set, just use that */
if (hww1u1a_prompt)
return hww1u1a_prompt;
/* Use our serial number if present, otherwise a default */
serialnr = getenv("serial#");
if (!serialnr || !serialnr[0])
serialnr = "999999-X";
/*
* We will turn the serial number into a hostname by:
* (A) Delete all non-alphanumerics.
* (B) Lowercase all letters.
* (C) Prefix "exm".
* (D) Suffix "a" for CPU A and "b" for CPU B.
*/
for (i = 0, len = 0; serialnr[i]; i++) {
if (isalnum(serialnr[i]))
len++;
}
len += sizeof(PROMPT_PREFIX PROMPT_SUFFIX) + 1; /* Includes NUL */
hww1u1a_prompt = malloc(len);
if (!hww1u1a_prompt)
return PROMPT_PREFIX "UNKNOWN(ENOMEM)" PROMPT_SUFFIX;
/* Now actually fill it in */
i = 0;
/* Handle the prefix */
for (j = 0; j < sizeof(PROMPT_PREFIX) - 1; j++)
hww1u1a_prompt[i++] = PROMPT_PREFIX[j];
/* Now the serial# part of the hostname */
for (j = 0; serialnr[j]; j++)
if (isalnum(serialnr[j]))
hww1u1a_prompt[i++] = tolower(serialnr[j]);
/* Now the CPU id ("a" or "b") */
hww1u1a_prompt[i++] = hww1u1a_is_cpu_a() ? 'a' : 'b';
/* Finally the suffix */
for (j = 0; j < sizeof(PROMPT_SUFFIX); j++)
hww1u1a_prompt[i++] = PROMPT_SUFFIX[j];
/* This should all have added up, but just in case */
hww1u1a_prompt[len - 1] = '\0';
/* Now we're done */
return hww1u1a_prompt;
}
void pci_init_board(void)
{
fsl_pcie_init_board(0);
}
int board_early_init_r(void)
{
const unsigned int flashbase = CONFIG_SYS_FLASH_BASE;
int flash_esel = find_tlb_idx((void *)flashbase, 1);
/*
* Remap bootflash region to caching-inhibited
* so that flash can be erased properly.
*/
/* Flush d-cache and invalidate i-cache of any FLASH data */
flush_dcache();
invalidate_icache();
if (flash_esel == -1) {
/* very unlikely unless something is messed up */
puts("Error: Could not find TLB for FLASH BASE\n");
flash_esel = 2; /* give our best effort to continue */
} else {
/* invalidate existing TLB entry for FLASH */
disable_tlb(flash_esel);
}
set_tlb(1, flashbase, CONFIG_SYS_FLASH_BASE_PHYS,
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
0, flash_esel, BOOKE_PAGESZ_256M, 1);
return 0;
}
int board_eth_init(bd_t *bis)
{
struct tsec_info_struct tsec_info[4];
struct fsl_pq_mdio_info mdio_info;
SET_STD_TSEC_INFO(tsec_info[0], 1);
SET_STD_TSEC_INFO(tsec_info[1], 2);
SET_STD_TSEC_INFO(tsec_info[2], 3);
if (hww1u1a_is_cpu_a())
tsec_info[2].phyaddr = TSEC3_PHY_ADDR_CPUA;
else
tsec_info[2].phyaddr = TSEC3_PHY_ADDR_CPUB;
mdio_info.regs = (struct tsec_mii_mng *)CONFIG_SYS_MDIO_BASE_ADDR;
mdio_info.name = DEFAULT_MII_NAME;
fsl_pq_mdio_init(bis, &mdio_info);
tsec_eth_init(bis, tsec_info, 3);
return pci_eth_init(bis);
}
void ft_board_setup(void *blob, bd_t *bd)
{
phys_addr_t base;
phys_size_t size;
ft_cpu_setup(blob, bd);
base = getenv_bootm_low();
size = getenv_bootm_size();
fdt_fixup_memory(blob, (u64)base, (u64)size);
FT_FSL_PCI_SETUP;
}