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https://github.com/brain-hackers/u-boot-brain
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![Timur Tabi](/assets/img/avatar_default.png)
Refactor and document the Freescale PIXIS code, used on most 85xx and 86xx boards. This makes the code easier to read and more flexible. Delete pixis.h, because none of the exported functions were actually being used by any other file. Make all of the functions in pixis.c 'static'. Remove "#include pixis.h" from every file that has it. Remove some unnecessary #includes. Make 'pixis_base' into a macro, so that we don't need to define it in every function. Add "while(1);" loops at the end of functions that reset the board, so that execution doesn't continue while the reset is in progress. Replace in_8/out_8 calls with clrbits_8, setbits_8, or clrsetbits_8, where appropriate. Replace ulong/uint with their spelled-out equivalents. Remove unnecessary typecasts, changing the types of some variables if necessary. Add CONFIG_SYS_PIXIS_VCFGEN0_ENABLE and CONFIG_SYS_PIXIS_VBOOT_ENABLE to make it easier for specific boards to support variations in the PIXIS registers sets. No current boards appears to need this feature. Fix the definition of CONFIG_SYS_PIXIS_VBOOT_MASK for the MPC8610 HPCD. Apparently, "pixis_reset altbank" has never worked on this board. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
379 lines
8.5 KiB
C
379 lines
8.5 KiB
C
/*
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* Copyright 2006, 2007 Freescale Semiconductor.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <pci.h>
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#include <asm/processor.h>
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#include <asm/immap_86xx.h>
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#include <asm/fsl_pci.h>
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#include <asm/fsl_ddr_sdram.h>
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#include <asm/io.h>
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#include <libfdt.h>
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#include <fdt_support.h>
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#include <netdev.h>
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phys_size_t fixed_sdram(void);
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int board_early_init_f(void)
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{
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return 0;
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}
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int checkboard(void)
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{
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u8 vboot;
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u8 *pixis_base = (u8 *)PIXIS_BASE;
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printf ("Board: MPC8641HPCN, Sys ID: 0x%02x, "
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"Sys Ver: 0x%02x, FPGA Ver: 0x%02x, ",
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in_8(pixis_base + PIXIS_ID), in_8(pixis_base + PIXIS_VER),
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in_8(pixis_base + PIXIS_PVER));
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vboot = in_8(pixis_base + PIXIS_VBOOT);
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if (vboot & PIXIS_VBOOT_FMAP)
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printf ("vBank: %d\n", ((vboot & PIXIS_VBOOT_FBANK) >> 6));
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else
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puts ("Promjet\n");
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#ifdef CONFIG_PHYS_64BIT
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printf (" 36-bit physical address map\n");
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#endif
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return 0;
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}
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phys_size_t
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initdram(int board_type)
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{
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phys_size_t dram_size = 0;
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#if defined(CONFIG_SPD_EEPROM)
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dram_size = fsl_ddr_sdram();
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#else
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dram_size = fixed_sdram();
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#endif
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setup_ddr_bat(dram_size);
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puts(" DDR: ");
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return dram_size;
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}
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#if !defined(CONFIG_SPD_EEPROM)
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/*
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* Fixed sdram init -- doesn't use serial presence detect.
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*/
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phys_size_t
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fixed_sdram(void)
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{
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#if !defined(CONFIG_SYS_RAMBOOT)
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volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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volatile ccsr_ddr_t *ddr = &immap->im_ddr1;
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ddr->cs0_bnds = CONFIG_SYS_DDR_CS0_BNDS;
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ddr->cs0_config = CONFIG_SYS_DDR_CS0_CONFIG;
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ddr->timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
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ddr->timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
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ddr->timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
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ddr->timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
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ddr->sdram_mode = CONFIG_SYS_DDR_MODE_1;
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ddr->sdram_mode_2 = CONFIG_SYS_DDR_MODE_2;
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ddr->sdram_interval = CONFIG_SYS_DDR_INTERVAL;
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ddr->sdram_data_init = CONFIG_SYS_DDR_DATA_INIT;
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ddr->sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL;
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ddr->sdram_ocd_cntl = CONFIG_SYS_DDR_OCD_CTRL;
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ddr->sdram_ocd_status = CONFIG_SYS_DDR_OCD_STATUS;
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#if defined (CONFIG_DDR_ECC)
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ddr->err_disable = 0x0000008D;
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ddr->err_sbe = 0x00ff0000;
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#endif
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asm("sync;isync");
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udelay(500);
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#if defined (CONFIG_DDR_ECC)
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/* Enable ECC checking */
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ddr->sdram_cfg = (CONFIG_SYS_DDR_CONTROL | 0x20000000);
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#else
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ddr->sdram_cfg = CONFIG_SYS_DDR_CONTROL;
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ddr->sdram_cfg_2 = CONFIG_SYS_DDR_CONTROL2;
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#endif
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asm("sync; isync");
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udelay(500);
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#endif
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return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
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}
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#endif /* !defined(CONFIG_SPD_EEPROM) */
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#if defined(CONFIG_PCI)
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static struct pci_controller pci1_hose;
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#endif /* CONFIG_PCI */
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#ifdef CONFIG_PCI2
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static struct pci_controller pci2_hose;
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#endif /* CONFIG_PCI2 */
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int first_free_busno = 0;
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void pci_init_board(void)
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{
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#ifdef CONFIG_PCI1
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{
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volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCI1_ADDR;
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struct pci_controller *hose = &pci1_hose;
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struct pci_region *r = hose->regions;
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volatile immap_t *immap = (immap_t *) CONFIG_SYS_CCSRBAR;
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volatile ccsr_gur_t *gur = &immap->im_gur;
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uint devdisr = gur->devdisr;
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uint io_sel = (gur->pordevsr & MPC8641_PORDEVSR_IO_SEL)
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>> MPC8641_PORDEVSR_IO_SEL_SHIFT;
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int pcie_configured = is_fsl_pci_cfg(LAW_TRGT_IF_PCIE_1, io_sel);
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#ifdef DEBUG
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uint host1_agent = (gur->porbmsr & MPC8641_PORBMSR_HA)
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>> MPC8641_PORBMSR_HA_SHIFT;
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uint pex1_agent = (host1_agent == 0) || (host1_agent == 1);
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#endif
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if (pcie_configured && !(devdisr & MPC86xx_DEVDISR_PCIEX1)) {
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debug("PCI-EXPRESS 1: %s \n", pex1_agent ? "Agent" : "Host");
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debug("0x%08x=0x%08x ", &pci->pme_msg_det, pci->pme_msg_det);
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if (pci->pme_msg_det) {
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pci->pme_msg_det = 0xffffffff;
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debug(" with errors. Clearing. Now 0x%08x",
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pci->pme_msg_det);
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}
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debug("\n");
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/* outbound memory */
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pci_set_region(r++,
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CONFIG_SYS_PCI1_MEM_BUS,
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CONFIG_SYS_PCI1_MEM_PHYS,
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CONFIG_SYS_PCI1_MEM_SIZE,
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PCI_REGION_MEM);
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/* outbound io */
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pci_set_region(r++,
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CONFIG_SYS_PCI1_IO_BUS,
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CONFIG_SYS_PCI1_IO_PHYS,
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CONFIG_SYS_PCI1_IO_SIZE,
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PCI_REGION_IO);
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hose->region_count = r - hose->regions;
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hose->first_busno=first_free_busno;
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fsl_pci_init(hose, (u32)&pci->cfg_addr, (u32)&pci->cfg_data);
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first_free_busno=hose->last_busno+1;
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printf (" PCI-EXPRESS 1 on bus %02x - %02x\n",
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hose->first_busno,hose->last_busno);
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/*
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* Activate ULI1575 legacy chip by performing a fake
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* memory access. Needed to make ULI RTC work.
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*/
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in_be32((unsigned *) ((char *)(CONFIG_SYS_PCI1_MEM_VIRT
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+ CONFIG_SYS_PCI1_MEM_SIZE - 0x1000000)));
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} else {
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puts("PCI-EXPRESS 1: Disabled\n");
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}
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}
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#else
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puts("PCI-EXPRESS1: Disabled\n");
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#endif /* CONFIG_PCI1 */
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#ifdef CONFIG_PCI2
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{
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volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCI2_ADDR;
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struct pci_controller *hose = &pci2_hose;
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struct pci_region *r = hose->regions;
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/* outbound memory */
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pci_set_region(r++,
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CONFIG_SYS_PCI2_MEM_BUS,
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CONFIG_SYS_PCI2_MEM_PHYS,
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CONFIG_SYS_PCI2_MEM_SIZE,
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PCI_REGION_MEM);
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/* outbound io */
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pci_set_region(r++,
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CONFIG_SYS_PCI2_IO_BUS,
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CONFIG_SYS_PCI2_IO_PHYS,
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CONFIG_SYS_PCI2_IO_SIZE,
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PCI_REGION_IO);
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hose->region_count = r - hose->regions;
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hose->first_busno=first_free_busno;
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fsl_pci_init(hose, (u32)&pci->cfg_addr, (u32)&pci->cfg_data);
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first_free_busno=hose->last_busno+1;
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printf (" PCI-EXPRESS 2 on bus %02x - %02x\n",
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hose->first_busno,hose->last_busno);
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}
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#else
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puts("PCI-EXPRESS 2: Disabled\n");
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#endif /* CONFIG_PCI2 */
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}
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#if defined(CONFIG_OF_BOARD_SETUP)
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void
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ft_board_setup(void *blob, bd_t *bd)
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{
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int off;
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u64 *tmp;
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u32 *addrcells;
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ft_cpu_setup(blob, bd);
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#ifdef CONFIG_PCI1
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ft_fsl_pci_setup(blob, "pci0", &pci1_hose);
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#endif
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#ifdef CONFIG_PCI2
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ft_fsl_pci_setup(blob, "pci1", &pci2_hose);
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#endif
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/*
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* Warn if it looks like the device tree doesn't match u-boot.
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* This is just an estimation, based on the location of CCSR,
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* which is defined by the "reg" property in the soc node.
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*/
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off = fdt_path_offset(blob, "/soc8641");
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addrcells = (u32 *)fdt_getprop(blob, 0, "#address-cells", NULL);
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tmp = (u64 *)fdt_getprop(blob, off, "reg", NULL);
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if (tmp) {
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u64 addr;
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if (addrcells && (*addrcells == 1))
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addr = *(u32 *)tmp;
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else
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addr = *tmp;
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if (addr != CONFIG_SYS_CCSRBAR_PHYS)
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printf("WARNING: The CCSRBAR address in your .dts "
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"does not match the address of the CCSR "
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"in u-boot. This means your .dts might "
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"be old.\n");
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}
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}
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#endif
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/*
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* get_board_sys_clk
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* Reads the FPGA on board for CONFIG_SYS_CLK_FREQ
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*/
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unsigned long
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get_board_sys_clk(ulong dummy)
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{
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u8 i, go_bit, rd_clks;
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ulong val = 0;
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u8 *pixis_base = (u8 *)PIXIS_BASE;
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go_bit = in_8(pixis_base + PIXIS_VCTL);
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go_bit &= 0x01;
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rd_clks = in_8(pixis_base + PIXIS_VCFGEN0);
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rd_clks &= 0x1C;
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/*
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* Only if both go bit and the SCLK bit in VCFGEN0 are set
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* should we be using the AUX register. Remember, we also set the
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* GO bit to boot from the alternate bank on the on-board flash
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*/
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if (go_bit) {
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if (rd_clks == 0x1c)
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i = in_8(pixis_base + PIXIS_AUX);
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else
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i = in_8(pixis_base + PIXIS_SPD);
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} else {
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i = in_8(pixis_base + PIXIS_SPD);
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}
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i &= 0x07;
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switch (i) {
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case 0:
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val = 33000000;
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break;
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case 1:
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val = 40000000;
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break;
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case 2:
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val = 50000000;
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break;
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case 3:
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val = 66000000;
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break;
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case 4:
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val = 83000000;
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break;
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case 5:
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val = 100000000;
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break;
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case 6:
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val = 134000000;
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break;
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case 7:
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val = 166000000;
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break;
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}
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return val;
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}
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int board_eth_init(bd_t *bis)
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{
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/* Initialize TSECs */
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cpu_eth_init(bis);
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return pci_eth_init(bis);
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}
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void board_reset(void)
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{
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u8 *pixis_base = (u8 *)PIXIS_BASE;
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out_8(pixis_base + PIXIS_RST, 0);
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while (1)
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;
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}
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#ifdef CONFIG_MP
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extern void cpu_mp_lmb_reserve(struct lmb *lmb);
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void board_lmb_reserve(struct lmb *lmb)
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{
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cpu_mp_lmb_reserve(lmb);
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}
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#endif
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