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u-boot/board/sbc8548/sbc8548.c
Simon Glass e895a4b06f fdt: Allow ft_board_setup() to report failure 
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>
2014-11-21 04:43:15 +01:00

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6.9 KiB
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/*
* Copyright 2007,2009 Wind River Systems, Inc. <www.windriver.com>
*
* Copyright 2007 Embedded Specialties, Inc.
*
* Copyright 2004, 2007 Freescale Semiconductor.
*
* (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <pci.h>
#include <asm/processor.h>
#include <asm/immap_85xx.h>
#include <asm/fsl_pci.h>
#include <fsl_ddr_sdram.h>
#include <asm/fsl_serdes.h>
#include <spd_sdram.h>
#include <netdev.h>
#include <tsec.h>
#include <miiphy.h>
#include <libfdt.h>
#include <fdt_support.h>
DECLARE_GLOBAL_DATA_PTR;
void local_bus_init(void);
int board_early_init_f (void)
{
return 0;
}
int checkboard (void)
{
volatile ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR);
volatile u_char *rev= (void *)CONFIG_SYS_BD_REV;
printf ("Board: Wind River SBC8548 Rev. 0x%01x\n",
in_8(rev) >> 4);
/*
* Initialize local bus.
*/
local_bus_init ();
out_be32(&ecm->eedr, 0xffffffff); /* clear ecm errors */
out_be32(&ecm->eeer, 0xffffffff); /* enable ecm errors */
return 0;
}
/*
* Initialize Local Bus
*/
void
local_bus_init(void)
{
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
uint clkdiv, lbc_mhz, lcrr = CONFIG_SYS_LBC_LCRR;
sys_info_t sysinfo;
get_sys_info(&sysinfo);
lbc_mhz = sysinfo.freq_localbus / 1000000;
clkdiv = sysinfo.freq_systembus / sysinfo.freq_localbus;
debug("LCRR=0x%x, CD=%d, MHz=%d\n", lcrr, clkdiv, lbc_mhz);
out_be32(&gur->lbiuiplldcr1, 0x00078080);
if (clkdiv == 16) {
out_be32(&gur->lbiuiplldcr0, 0x7c0f1bf0);
} else if (clkdiv == 8) {
out_be32(&gur->lbiuiplldcr0, 0x6c0f1bf0);
} else if (clkdiv == 4) {
out_be32(&gur->lbiuiplldcr0, 0x5c0f1bf0);
}
/*
* Local Bus Clock > 83.3 MHz. According to timing
* specifications set LCRR[EADC] to 2 delay cycles.
*/
if (lbc_mhz > 83) {
lcrr &= ~LCRR_EADC;
lcrr |= LCRR_EADC_2;
}
/*
* According to MPC8548ERMAD Rev. 1.3, 13.3.1.16, 13-30
* disable PLL bypass for Local Bus Clock > 83 MHz.
*/
if (lbc_mhz >= 66)
lcrr &= (~LCRR_DBYP); /* DLL Enabled */
else
lcrr |= LCRR_DBYP; /* DLL Bypass */
out_be32(&lbc->lcrr, lcrr);
asm("sync;isync;msync");
/*
* According to MPC8548ERMAD Rev.1.3 read back LCRR
* and terminate with isync
*/
lcrr = in_be32(&lbc->lcrr);
asm ("isync;");
/* let DLL stabilize */
udelay(500);
out_be32(&lbc->ltesr, 0xffffffff); /* Clear LBC error IRQs */
out_be32(&lbc->lteir, 0xffffffff); /* Enable LBC error IRQs */
}
/*
* Initialize SDRAM memory on the Local Bus.
*/
void lbc_sdram_init(void)
{
#if defined(CONFIG_SYS_LBC_SDRAM_SIZE)
uint idx;
const unsigned long size = CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024;
volatile fsl_lbc_t *lbc = LBC_BASE_ADDR;
uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
uint *sdram_addr2 = (uint *)(CONFIG_SYS_LBC_SDRAM_BASE + size/2);
puts(" SDRAM: ");
print_size(size, "\n");
/*
* Setup SDRAM Base and Option Registers
*/
set_lbc_or(3, CONFIG_SYS_OR3_PRELIM);
set_lbc_br(3, CONFIG_SYS_BR3_PRELIM);
set_lbc_or(4, CONFIG_SYS_OR4_PRELIM);
set_lbc_br(4, CONFIG_SYS_BR4_PRELIM);
out_be32(&lbc->lbcr, CONFIG_SYS_LBC_LBCR);
asm("msync");
out_be32(&lbc->lsrt, CONFIG_SYS_LBC_LSRT);
out_be32(&lbc->mrtpr, CONFIG_SYS_LBC_MRTPR);
asm("msync");
/*
* Issue PRECHARGE ALL command.
*/
out_be32(&lbc->lsdmr, CONFIG_SYS_LBC_LSDMR_PCHALL);
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
*sdram_addr2 = 0xff;
ppcDcbf((unsigned long) sdram_addr2);
udelay(100);
/*
* Issue 8 AUTO REFRESH commands.
*/
for (idx = 0; idx < 8; idx++) {
out_be32(&lbc->lsdmr, CONFIG_SYS_LBC_LSDMR_ARFRSH);
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
*sdram_addr2 = 0xff;
ppcDcbf((unsigned long) sdram_addr2);
udelay(100);
}
/*
* Issue 8 MODE-set command.
*/
out_be32(&lbc->lsdmr, CONFIG_SYS_LBC_LSDMR_MRW);
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
*sdram_addr2 = 0xff;
ppcDcbf((unsigned long) sdram_addr2);
udelay(100);
/*
* Issue RFEN command.
*/
out_be32(&lbc->lsdmr, CONFIG_SYS_LBC_LSDMR_RFEN);
asm("sync;msync");
*sdram_addr = 0xff;
ppcDcbf((unsigned long) sdram_addr);
*sdram_addr2 = 0xff;
ppcDcbf((unsigned long) sdram_addr2);
udelay(200); /* Overkill. Must wait > 200 bus cycles */
#endif /* enable SDRAM init */
}
#if defined(CONFIG_SYS_DRAM_TEST)
int
testdram(void)
{
uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START;
uint *pend = (uint *) CONFIG_SYS_MEMTEST_END;
uint *p;
printf("Testing DRAM from 0x%08x to 0x%08x\n",
CONFIG_SYS_MEMTEST_START,
CONFIG_SYS_MEMTEST_END);
printf("DRAM test phase 1:\n");
for (p = pstart; p < pend; p++)
*p = 0xaaaaaaaa;
for (p = pstart; p < pend; p++) {
if (*p != 0xaaaaaaaa) {
printf ("DRAM test fails at: %08x\n", (uint) p);
return 1;
}
}
printf("DRAM test phase 2:\n");
for (p = pstart; p < pend; p++)
*p = 0x55555555;
for (p = pstart; p < pend; p++) {
if (*p != 0x55555555) {
printf ("DRAM test fails at: %08x\n", (uint) p);
return 1;
}
}
printf("DRAM test passed.\n");
return 0;
}
#endif
#ifdef CONFIG_PCI1
static struct pci_controller pci1_hose;
#endif /* CONFIG_PCI1 */
#ifdef CONFIG_PCI
void
pci_init_board(void)
{
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
int first_free_busno = 0;
#ifdef CONFIG_PCI1
struct fsl_pci_info pci_info;
u32 devdisr = in_be32(&gur->devdisr);
u32 pordevsr = in_be32(&gur->pordevsr);
u32 porpllsr = in_be32(&gur->porpllsr);
if (!(devdisr & MPC85xx_DEVDISR_PCI1)) {
uint pci_32 = pordevsr & MPC85xx_PORDEVSR_PCI1_PCI32;
uint pci_arb = pordevsr & MPC85xx_PORDEVSR_PCI1_ARB;
uint pci_clk_sel = porpllsr & MPC85xx_PORDEVSR_PCI1_SPD;
uint pci_speed = CONFIG_SYS_CLK_FREQ; /* get_clock_freq() */
printf("PCI: Host, %d bit, %s MHz, %s, %s\n",
(pci_32) ? 32 : 64,
(pci_speed == 33000000) ? "33" :
(pci_speed == 66000000) ? "66" : "unknown",
pci_clk_sel ? "sync" : "async",
pci_arb ? "arbiter" : "external-arbiter");
SET_STD_PCI_INFO(pci_info, 1);
set_next_law(pci_info.mem_phys,
law_size_bits(pci_info.mem_size), pci_info.law);
set_next_law(pci_info.io_phys,
law_size_bits(pci_info.io_size), pci_info.law);
first_free_busno = fsl_pci_init_port(&pci_info,
&pci1_hose, first_free_busno);
} else {
printf("PCI: disabled\n");
}
puts("\n");
#else
setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI1); /* disable */
#endif
setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI2); /* disable PCI2 */
fsl_pcie_init_board(first_free_busno);
}
#endif
int board_eth_init(bd_t *bis)
{
tsec_standard_init(bis);
pci_eth_init(bis);
return 0; /* otherwise cpu_eth_init gets run */
}
int last_stage_init(void)
{
return 0;
}
#if defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, bd_t *bd)
{
ft_cpu_setup(blob, bd);
#ifdef CONFIG_FSL_PCI_INIT
FT_FSL_PCI_SETUP;
#endif
return 0;
}
#endif
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