From c2d943ffbfd3359b3b45d177b437379d2cb86fbf Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Thu, 29 Nov 2007 10:16:18 -0600 Subject: Move the MPC8540 ADS board under board/freescale. Minor path corrections needed to ensure buildability. Signed-off-by: Kumar Gala --- board/freescale/mpc8540ads/mpc8540ads.c | 348 ++++++++++++++++++++++++++++++++ 1 file changed, 348 insertions(+) create mode 100644 board/freescale/mpc8540ads/mpc8540ads.c (limited to 'board/freescale/mpc8540ads/mpc8540ads.c') diff --git a/board/freescale/mpc8540ads/mpc8540ads.c b/board/freescale/mpc8540ads/mpc8540ads.c new file mode 100644 index 00000000000..35f5eeaf032 --- /dev/null +++ b/board/freescale/mpc8540ads/mpc8540ads.c @@ -0,0 +1,348 @@ + /* + * Copyright 2004 Freescale Semiconductor. + * (C) Copyright 2002,2003, Motorola Inc. + * Xianghua Xiao, (X.Xiao@motorola.com) + * + * (C) Copyright 2002 Scott McNutt + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + + +#include +#include +#include +#include +#include +#include +#include + +#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER) +extern void ddr_enable_ecc(unsigned int dram_size); +#endif + +extern long int spd_sdram(void); + +void local_bus_init(void); +void sdram_init(void); +long int fixed_sdram(void); + + +int board_early_init_f (void) +{ + return 0; +} + +int checkboard (void) +{ + puts("Board: ADS\n"); + +#ifdef CONFIG_PCI + printf(" PCI1: 32 bit, %d MHz (compiled)\n", + CONFIG_SYS_CLK_FREQ / 1000000); +#else + printf(" PCI1: disabled\n"); +#endif + + /* + * Initialize local bus. + */ + local_bus_init(); + + return 0; +} + + +long int +initdram(int board_type) +{ + long dram_size = 0; + extern long spd_sdram (void); + + puts("Initializing\n"); + +#if defined(CONFIG_DDR_DLL) + { + volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR); + uint temp_ddrdll = 0; + + /* + * Work around to stabilize DDR DLL + */ + temp_ddrdll = gur->ddrdllcr; + gur->ddrdllcr = ((temp_ddrdll & 0xff) << 16) | 0x80000000; + asm("sync;isync;msync"); + } +#endif + +#if defined(CONFIG_SPD_EEPROM) + dram_size = spd_sdram (); +#else + dram_size = fixed_sdram (); +#endif + +#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER) + /* + * Initialize and enable DDR ECC. + */ + ddr_enable_ecc(dram_size); +#endif + + /* + * Initialize SDRAM. + */ + sdram_init(); + + puts(" DDR: "); + return dram_size; +} + + +/* + * Initialize Local Bus + */ + +void +local_bus_init(void) +{ + volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR); + volatile ccsr_lbc_t *lbc = (void *)(CFG_MPC85xx_LBC_ADDR); + + uint clkdiv; + uint lbc_hz; + sys_info_t sysinfo; + + /* + * Errata LBC11. + * Fix Local Bus clock glitch when DLL is enabled. + * + * If localbus freq is < 66Mhz, DLL bypass mode must be used. + * If localbus freq is > 133Mhz, DLL can be safely enabled. + * Between 66 and 133, the DLL is enabled with an override workaround. + */ + + get_sys_info(&sysinfo); + clkdiv = lbc->lcrr & 0x0f; + lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv; + + if (lbc_hz < 66) { + lbc->lcrr = CFG_LBC_LCRR | 0x80000000; /* DLL Bypass */ + + } else if (lbc_hz >= 133) { + lbc->lcrr = CFG_LBC_LCRR & (~0x80000000); /* DLL Enabled */ + + } else { + /* + * On REV1 boards, need to change CLKDIV before enable DLL. + * Default CLKDIV is 8, change it to 4 temporarily. + */ + uint pvr = get_pvr(); + uint temp_lbcdll = 0; + + if (pvr == PVR_85xx_REV1) { + /* FIXME: Justify the high bit here. */ + lbc->lcrr = 0x10000004; + } + + lbc->lcrr = CFG_LBC_LCRR & (~0x80000000); /* DLL Enabled */ + udelay(200); + + /* + * Sample LBC DLL ctrl reg, upshift it to set the + * override bits. + */ + temp_lbcdll = gur->lbcdllcr; + gur->lbcdllcr = (((temp_lbcdll & 0xff) << 16) | 0x80000000); + asm("sync;isync;msync"); + } +} + + +/* + * Initialize SDRAM memory on the Local Bus. + */ + +void +sdram_init(void) +{ + volatile ccsr_lbc_t *lbc = (void *)(CFG_MPC85xx_LBC_ADDR); + uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE; + + puts(" SDRAM: "); + print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n"); + + /* + * Setup SDRAM Base and Option Registers + */ + lbc->or2 = CFG_OR2_PRELIM; + lbc->br2 = CFG_BR2_PRELIM; + lbc->lbcr = CFG_LBC_LBCR; + asm("msync"); + + lbc->lsrt = CFG_LBC_LSRT; + lbc->mrtpr = CFG_LBC_MRTPR; + asm("sync"); + + /* + * Configure the SDRAM controller. + */ + lbc->lsdmr = CFG_LBC_LSDMR_1; + asm("sync"); + *sdram_addr = 0xff; + ppcDcbf((unsigned long) sdram_addr); + udelay(100); + + lbc->lsdmr = CFG_LBC_LSDMR_2; + asm("sync"); + *sdram_addr = 0xff; + ppcDcbf((unsigned long) sdram_addr); + udelay(100); + + lbc->lsdmr = CFG_LBC_LSDMR_3; + asm("sync"); + *sdram_addr = 0xff; + ppcDcbf((unsigned long) sdram_addr); + udelay(100); + + lbc->lsdmr = CFG_LBC_LSDMR_4; + asm("sync"); + *sdram_addr = 0xff; + ppcDcbf((unsigned long) sdram_addr); + udelay(100); + + lbc->lsdmr = CFG_LBC_LSDMR_5; + asm("sync"); + *sdram_addr = 0xff; + ppcDcbf((unsigned long) sdram_addr); + udelay(100); +} + + +#if defined(CFG_DRAM_TEST) +int testdram (void) +{ + uint *pstart = (uint *) CFG_MEMTEST_START; + uint *pend = (uint *) CFG_MEMTEST_END; + uint *p; + + printf("SDRAM test phase 1:\n"); + for (p = pstart; p < pend; p++) + *p = 0xaaaaaaaa; + + for (p = pstart; p < pend; p++) { + if (*p != 0xaaaaaaaa) { + printf ("SDRAM test fails at: %08x\n", (uint) p); + return 1; + } + } + + printf("SDRAM test phase 2:\n"); + for (p = pstart; p < pend; p++) + *p = 0x55555555; + + for (p = pstart; p < pend; p++) { + if (*p != 0x55555555) { + printf ("SDRAM test fails at: %08x\n", (uint) p); + return 1; + } + } + + printf("SDRAM test passed.\n"); + return 0; +} +#endif + + +#if !defined(CONFIG_SPD_EEPROM) +/************************************************************************* + * fixed sdram init -- doesn't use serial presence detect. + ************************************************************************/ +long int fixed_sdram (void) +{ + #ifndef CFG_RAMBOOT + volatile ccsr_ddr_t *ddr= (void *)(CFG_MPC85xx_DDR_ADDR); + + ddr->cs0_bnds = CFG_DDR_CS0_BNDS; + ddr->cs0_config = CFG_DDR_CS0_CONFIG; + ddr->timing_cfg_1 = CFG_DDR_TIMING_1; + ddr->timing_cfg_2 = CFG_DDR_TIMING_2; + ddr->sdram_mode = CFG_DDR_MODE; + ddr->sdram_interval = CFG_DDR_INTERVAL; + #if defined (CONFIG_DDR_ECC) + ddr->err_disable = 0x0000000D; + ddr->err_sbe = 0x00ff0000; + #endif + asm("sync;isync;msync"); + udelay(500); + #if defined (CONFIG_DDR_ECC) + /* Enable ECC checking */ + ddr->sdram_cfg = (CFG_DDR_CONTROL | 0x20000000); + #else + ddr->sdram_cfg = CFG_DDR_CONTROL; + #endif + asm("sync; isync; msync"); + udelay(500); + #endif + return CFG_SDRAM_SIZE * 1024 * 1024; +} +#endif /* !defined(CONFIG_SPD_EEPROM) */ + + +#if defined(CONFIG_PCI) +/* + * Initialize PCI Devices, report devices found. + */ + + +static struct pci_controller hose; + +#endif /* CONFIG_PCI */ + + +void +pci_init_board(void) +{ +#ifdef CONFIG_PCI + pci_mpc85xx_init(&hose); +#endif /* CONFIG_PCI */ +} + + +#if defined(CONFIG_OF_BOARD_SETUP) +void +ft_board_setup(void *blob, bd_t *bd) +{ + int node, tmp[2]; + const char *path; + + ft_cpu_setup(blob, bd); + + node = fdt_path_offset(blob, "/aliases"); + tmp[0] = 0; + if (node >= 0) { +#ifdef CONFIG_PCI + path = fdt_getprop(blob, node, "pci0", NULL); + if (path) { + tmp[1] = hose.last_busno - hose.first_busno; + do_fixup_by_path(blob, path, "bus-range", &tmp, 8, 1); + } +#endif + } +} +#endif -- cgit v1.2.3