ppc4xx: Add GDsys PowerPC 440 ETX board support.

Board support for the Guntermann & Drunck PowerPC 440 ETX module.
Based on the AMCC Yosemite board support by Stefan Roese.

Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 325 insertions, 0 deletions

diff --git a/board/gdsys/gdppc440etx/gdppc440etx.c b/board/gdsys/gdppc440etx/gdppc440etx.c
new file mode 100644
index 0000000000..e1890fff33
--- /dev/null
+++ b/board/gdsys/gdppc440etx/gdppc440etx.c
@@ -0,0 +1,325 @@
+/*
+ * (C) Copyright 2008
+ * Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
+ *
+ * Based on board/amcc/yosemite/yosemite.c
+ * (C) Copyright 2006-2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * 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 <common.h>
+#include <ppc4xx.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* info for FLASH chips */
+extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
+
+int board_early_init_f(void)
+{
+	register uint reg;
+
+	/*
+	 * Setup the external bus controller/chip selects
+	 */
+	mfebc(xbcfg, reg);
+	mtebc(xbcfg, reg | 0x04000000);		/* Set ATC */
+
+	/*
+	 * Setup the GPIO pins
+	 */
+
+	/* setup Address lines for flash size 64Meg. */
+	out32(GPIO0_OSRL, in32(GPIO0_OSRL) | 0x54000000);
+	out32(GPIO0_TSRL, in32(GPIO0_TSRL) | 0x54000000);
+	out32(GPIO0_ISR1L, in32(GPIO0_ISR1L) | 0x54000000);
+
+	/* setup emac */
+	out32(GPIO0_TCR, in32(GPIO0_TCR) | 0xC080);
+	out32(GPIO0_TSRL, in32(GPIO0_TSRL) | 0x40);
+	out32(GPIO0_ISR1L, in32(GPIO0_ISR1L) | 0x55);
+	out32(GPIO0_OSRH, in32(GPIO0_OSRH) | 0x50004000);
+	out32(GPIO0_ISR1H, in32(GPIO0_ISR1H) | 0x00440000);
+
+	/* UART0 and UART1*/
+	out32(GPIO1_TCR, in32(GPIO1_TCR)     | 0x16000000);
+	out32(GPIO1_OSRL, in32(GPIO1_OSRL)   | 0x02180000);
+	out32(GPIO1_ISR1L, in32(GPIO1_ISR1L) | 0x00400000);
+	out32(GPIO1_ISR2L, in32(GPIO1_ISR2L) | 0x04010000);
+
+	/* disable boot-eeprom WP */
+	out32(GPIO0_OSRL, in32(GPIO0_OSRL) & ~0x00C00000);
+	out32(GPIO0_TSRL, in32(GPIO0_TSRL) & ~0x00C00000);
+	out32(GPIO0_ISR1L, in32(GPIO0_ISR1L) & ~0x00C00000);
+	out32(GPIO0_TCR, in32(GPIO0_TCR) | 0x08000000);
+	out32(GPIO0_OR, in32(GPIO0_OR) & ~0x08000000);
+
+	/* external interrupts IRQ0...3 */
+	out32(GPIO1_TCR, in32(GPIO1_TCR) & ~0x00f00000);
+	out32(GPIO1_TSRL, in32(GPIO1_TSRL) & ~0x00005500);
+	out32(GPIO1_ISR1L, in32(GPIO1_ISR1L) | 0x00005500);
+
+
+	/*
+	 * Setup the interrupt controller polarities, triggers, etc.
+	 */
+	mtdcr(uic0sr, 0xffffffff);	/* clear all */
+	mtdcr(uic0er, 0x00000000);	/* disable all */
+	mtdcr(uic0cr, 0x00000009);	/* ATI & UIC1 crit are critical */
+	mtdcr(uic0pr, 0xfffffe13);	/* per ref-board manual */
+	mtdcr(uic0tr, 0x01c00008);	/* per ref-board manual */
+	mtdcr(uic0vr, 0x00000001);	/* int31 highest, base=0x000 */
+	mtdcr(uic0sr, 0xffffffff);	/* clear all */
+
+	mtdcr(uic1sr, 0xffffffff);	/* clear all */
+	mtdcr(uic1er, 0x00000000);	/* disable all */
+	mtdcr(uic1cr, 0x00000000);	/* all non-critical */
+	mtdcr(uic1pr, 0xffffe0ff);	/* per ref-board manual */
+	mtdcr(uic1tr, 0x00ffc000);	/* per ref-board manual */
+	mtdcr(uic1vr, 0x00000001);	/* int31 highest, base=0x000 */
+	mtdcr(uic1sr, 0xffffffff);	/* clear all */
+
+	/*
+	 * Setup other serial configuration
+	 */
+	mfsdr(sdr_pci0, reg);
+	mtsdr(sdr_pci0, 0x80000000 | reg);	/* PCI arbiter enabled */
+	mtsdr(sdr_pfc0, 0x00003e00);	/* Pin function */
+	mtsdr(sdr_pfc1, 0x00048000);	/* Pin function: UART0 has 4 pins */
+
+	return 0;
+}
+
+int misc_init_r(void)
+{
+	uint pbcr;
+	int size_val;
+	uint sz;
+
+	/* Re-do sizing to get full correct info */
+	mfebc(pb0cr, pbcr);
+
+	if (gd->bd->bi_flashsize > 0x08000000)
+		panic("Max. flash banksize is 128 MB!\n");
+
+	for (sz = gd->bd->bi_flashsize, size_val = 7;
+	    ((sz & 0x08000000) == 0) && (size_val > 0); --size_val)
+		sz <<= 1;
+
+	pbcr = (pbcr & 0x0001ffff) | gd->bd->bi_flashstart | (size_val << 17);
+	mtebc(pb0cr, pbcr);
+
+	/* adjust flash start and offset */
+	gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
+	gd->bd->bi_flashoffset = 0;
+
+	/* Monitor protection ON by default */
+	(void)flash_protect(FLAG_PROTECT_SET,
+			    -CONFIG_SYS_MONITOR_LEN,
+			    0xffffffff,
+			    &flash_info[0]);
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	char *s = getenv("serial#");
+	u8 rev;
+	u8 val;
+
+	printf("Board: GDPPC440ETX - G&D PPC440EP/GR ETX-module");
+
+	if (s != NULL) {
+		puts(", serial# ");
+		puts(s);
+	}
+	putc('\n');
+
+	return 0;
+}
+
+/*
+ * pci_pre_init
+ *
+ * This routine is called just prior to registering the hose and gives
+ * the board the opportunity to check things. Returning a value of zero
+ * indicates that things are bad & PCI initialization should be aborted.
+ *
+ *	Different boards may wish to customize the pci controller structure
+ *	(add regions, override default access routines, etc) or perform
+ *	certain pre-initialization actions.
+ *
+ */
+#if defined(CONFIG_PCI)
+int pci_pre_init(struct pci_controller *hose)
+{
+	unsigned long addr;
+
+	/*
+	 * Set priority for all PLB3 devices to 0.
+	 * Set PLB3 arbiter to fair mode.
+	 */
+	mfsdr(sdr_amp1, addr);
+	mtsdr(sdr_amp1, (addr & 0x000000FF) | 0x0000FF00);
+	addr = mfdcr(plb3_acr);
+	mtdcr(plb3_acr, addr | 0x80000000);
+
+	/*
+	 * Set priority for all PLB4 devices to 0.
+	 */
+	mfsdr(sdr_amp0, addr);
+	mtsdr(sdr_amp0, (addr & 0x000000FF) | 0x0000FF00);
+	addr = mfdcr(plb4_acr) | 0xa0000000;	/* Was 0x8---- */
+	mtdcr(plb4_acr, addr);
+
+	/*
+	 * Set Nebula PLB4 arbiter to fair mode.
+	 */
+	/* Segment0 */
+	addr = (mfdcr(plb0_acr) & ~plb0_acr_ppm_mask) | plb0_acr_ppm_fair;
+	addr = (addr & ~plb0_acr_hbu_mask) | plb0_acr_hbu_enabled;
+	addr = (addr & ~plb0_acr_rdp_mask) | plb0_acr_rdp_4deep;
+	addr = (addr & ~plb0_acr_wrp_mask) | plb0_acr_wrp_2deep;
+	mtdcr(plb0_acr, addr);
+
+	/* Segment1 */
+	addr = (mfdcr(plb1_acr) & ~plb1_acr_ppm_mask) | plb1_acr_ppm_fair;
+	addr = (addr & ~plb1_acr_hbu_mask) | plb1_acr_hbu_enabled;
+	addr = (addr & ~plb1_acr_rdp_mask) | plb1_acr_rdp_4deep;
+	addr = (addr & ~plb1_acr_wrp_mask) | plb1_acr_wrp_2deep;
+	mtdcr(plb1_acr, addr);
+
+	/* enable 66 MHz ext. Clock */
+	out32(GPIO1_TCR, in32(GPIO1_TCR) | 0x00008000);
+	out32(GPIO1_OR, in32(GPIO1_OR) | 0x00008000);
+
+	return 1;
+}
+#endif	/* defined(CONFIG_PCI) */
+
+/*
+ * pci_target_init
+ *
+ * The bootstrap configuration provides default settings for the pci
+ * inbound map (PIM). But the bootstrap config choices are limited and
+ * may not be sufficient for a given board.
+ *
+ */
+#if defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_TARGET_INIT)
+void pci_target_init(struct pci_controller *hose)
+{
+	/*
+	 * Set up Direct MMIO registers
+	 */
+
+	/*
+	 * PowerPC440 EP PCI Master configuration.
+	 * Map one 1Gig range of PLB/processor addresses to PCI memory space.
+	 *       PLB address 0xA0000000-0xDFFFFFFF
+	 *   ==> PCI address 0xA0000000-0xDFFFFFFF
+	 *   Use byte reversed out routines to handle endianess.
+	 * Make this region non-prefetchable.
+	 */
+	out32r(PCIX0_PMM0MA, 0x00000000); 	/* disabled b4 setting */
+	out32r(PCIX0_PMM0LA, CONFIG_SYS_PCI_MEMBASE);
+	out32r(PCIX0_PMM0PCILA, CONFIG_SYS_PCI_MEMBASE);
+	out32r(PCIX0_PMM0PCIHA, 0x00000000);
+	out32r(PCIX0_PMM0MA, 0xE0000001); /* 512M, no prefetch, enable region */
+
+	out32r(PCIX0_PMM1MA, 0x00000000);	/* disabled b4 setting */
+	out32r(PCIX0_PMM1LA, CONFIG_SYS_PCI_MEMBASE2);
+	out32r(PCIX0_PMM1PCILA, CONFIG_SYS_PCI_MEMBASE2);
+	out32r(PCIX0_PMM1PCIHA, 0x00000000);
+	out32r(PCIX0_PMM1MA, 0xE0000001); /* 512M, no prefetch, enable region */
+
+	out32r(PCIX0_PTM1MS, 0x00000001);
+	out32r(PCIX0_PTM1LA, 0);
+	out32r(PCIX0_PTM2MS, 0);
+	out32r(PCIX0_PTM2LA, 0);
+
+	/*
+	 * Set up Configuration registers
+	 */
+
+	/* Program the board's subsystem id/vendor id */
+	pci_write_config_word(0, PCI_SUBSYSTEM_VENDOR_ID,
+			      CONFIG_SYS_PCI_SUBSYS_VENDORID);
+	pci_write_config_word(0, PCI_SUBSYSTEM_ID, CONFIG_SYS_PCI_SUBSYS_ID);
+
+	/* Configure command register as bus master */
+	pci_write_config_word(0, PCI_COMMAND, PCI_COMMAND_MASTER);
+
+	/* 240nS PCI clock */
+	pci_write_config_word(0, PCI_LATENCY_TIMER, 1);
+
+	/* No error reporting */
+	pci_write_config_word(0, PCI_ERREN, 0);
+
+	pci_write_config_dword(0, PCI_BRDGOPT2, 0x00000101);
+
+}
+#endif	/* defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_TARGET_INIT) */
+
+/*
+ *  pci_master_init
+ *
+ */
+#if defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_MASTER_INIT)
+void pci_master_init(struct pci_controller *hose)
+{
+	unsigned short temp_short;
+
+	/*
+	 * Write the PowerPC440 EP PCI Configuration regs.
+	 *   Enable PowerPC440 EP to be a master on the PCI bus (PMM).
+	 *   Enable PowerPC440 EP to act as a PCI memory target (PTM).
+	 */
+	pci_read_config_word(0, PCI_COMMAND, &temp_short);
+	pci_write_config_word(0, PCI_COMMAND,
+			      temp_short | PCI_COMMAND_MASTER |
+			      PCI_COMMAND_MEMORY);
+}
+#endif	/* defined(CONFIG_PCI) && defined(CONFIG_SYS_PCI_MASTER_INIT) */
+
+/*
+ *  is_pci_host
+ *
+ *	This routine is called to determine if a pci scan should be
+ *	performed. With various hardware environments (especially cPCI and
+ *	PPMC) it's insufficient to depend on the state of the arbiter enable
+ *	bit in the strap register, or generic host/adapter assumptions.
+ *
+ *	Rather than hard-code a bad assumption in the general 440 code, the
+ *	440 pci code requires the board to decide at runtime.
+ *
+ *	Return 0 for adapter mode, non-zero for host (monarch) mode.
+ *
+ *
+ */
+#if defined(CONFIG_PCI)
+int is_pci_host(struct pci_controller *hose)
+{
+	return 1;
+}
+#endif	/* defined(CONFIG_PCI) */