[ppc4xx] Add initial lwmon5 board support

This patch adds initial support for the Liebherr lwmon5 board euqipped
with an AMCC 440EPx PowerPC.

Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 464 insertions, 0 deletions

diff --git a/board/lwmon5/lwmon5.c b/board/lwmon5/lwmon5.c
new file mode 100644
index 0000000..69b45ac
--- /dev/null
+++ b/board/lwmon5/lwmon5.c
@@ -0,0 +1,464 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * 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 <asm/processor.h>
+#include <ppc440.h>
+#include <asm/gpio.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips	*/
+
+ulong flash_get_size (ulong base, int banknum);
+
+int board_early_init_f(void)
+{
+	u32 sdr0_pfc1, sdr0_pfc2;
+	u32 reg;
+
+        /* PLB Write pipelining disabled. Denali Core workaround */
+      	mtdcr(plb0_acr, 0xDE000000);
+      	mtdcr(plb1_acr, 0xDE000000);
+
+	/*--------------------------------------------------------------------
+	 * Setup the interrupt controller polarities, triggers, etc.
+	 *-------------------------------------------------------------------*/
+	mtdcr(uic0sr, 0xffffffff);  /* clear all. if write with 1 then the status is cleared  */
+	mtdcr(uic0er, 0x00000000);  /* disable all */
+	mtdcr(uic0cr, 0x00000000);  /* we have not critical interrupts at the moment */
+	mtdcr(uic0pr, 0xfffff7ff);  /* Adjustment of the polarity */
+	mtdcr(uic0tr, 0x00000810);  /* per ref-board manual */
+	mtdcr(uic0vr, 0x00000000);  /* int31 highest, base=0x000 is within DDRAM */
+	mtdcr(uic0sr, 0xffffffff);  /* clear all */
+
+	mtdcr(uic1sr, 0xffffffff);  /* clear all */
+	mtdcr(uic1er, 0x00000000);  /* disable all */
+	mtdcr(uic1cr, 0x00000000);  /* all non-critical */
+	mtdcr(uic1pr, 0xFFFFC7AD);  /* Adjustment of the polarity */
+	mtdcr(uic1tr, 0x0600384A);  /* per ref-board manual */
+	mtdcr(uic1vr, 0x00000000);  /* int31 highest, base=0x000 is within DDRAM */
+	mtdcr(uic1sr, 0xffffffff);  /* clear all */
+
+	mtdcr(uic2sr, 0xffffffff);  /* clear all */
+	mtdcr(uic2er, 0x00000000);  /* disable all */
+	mtdcr(uic2cr, 0x00000000);  /* all non-critical */
+	mtdcr(uic2pr, 0x27C00000);  /* Adjustment of the polarity */
+	mtdcr(uic2tr, 0xDFC00000);  /* per ref-board manual */
+	mtdcr(uic2vr, 0x00000000);  /* int31 highest, base=0x000 is within DDRAM */
+	mtdcr(uic2sr, 0xffffffff);  /* clear all. Why this??? */
+
+	/* Trace Pins are disabled. SDR0_PFC0 Register */
+	mtsdr(SDR0_PFC0, 0x0);
+
+	/* select Ethernet pins */
+	mfsdr(SDR0_PFC1, sdr0_pfc1);
+	/* SMII via ZMII */
+	sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_SELECT_MASK) |
+		SDR0_PFC1_SELECT_CONFIG_6;
+	mfsdr(SDR0_PFC2, sdr0_pfc2);
+	sdr0_pfc2 = (sdr0_pfc2 & ~SDR0_PFC2_SELECT_MASK) |
+		SDR0_PFC2_SELECT_CONFIG_6;
+
+	/* enable SPI (SCP) */
+	sdr0_pfc1 = (sdr0_pfc1 & ~SDR0_PFC1_SIS_MASK) | SDR0_PFC1_SIS_SCP_SEL;
+
+	mtsdr(SDR0_PFC2, sdr0_pfc2);
+	mtsdr(SDR0_PFC1, sdr0_pfc1);
+
+	mtsdr(SDR0_PFC4, 0x80000000);
+
+	/* PCI arbiter disabled */
+        /* PCI Host Configuration disbaled */
+	mfsdr(sdr_pci0, reg);
+        reg = 0;
+	mtsdr(sdr_pci0, 0x00000000 | reg);
+
+	gpio_write_bit(CFG_GPIO_FLASH_WP, 1);
+
+	return 0;
+}
+
+/*---------------------------------------------------------------------------+
+  | misc_init_r.
+  +---------------------------------------------------------------------------*/
+int misc_init_r(void)
+{
+	u32 pbcr;
+	int size_val = 0;
+	u32 reg;
+	unsigned long usb2d0cr = 0;
+	unsigned long usb2phy0cr, usb2h0cr = 0;
+	unsigned long sdr0_pfc1;
+
+	/*
+	 * FLASH stuff...
+	 */
+
+	/* Re-do sizing to get full correct info */
+
+	/* adjust flash start and offset */
+	gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
+	gd->bd->bi_flashoffset = 0;
+
+	mfebc(pb0cr, pbcr);
+	switch (gd->bd->bi_flashsize) {
+	case 1 << 20:
+		size_val = 0;
+		break;
+	case 2 << 20:
+		size_val = 1;
+		break;
+	case 4 << 20:
+		size_val = 2;
+		break;
+	case 8 << 20:
+		size_val = 3;
+		break;
+	case 16 << 20:
+		size_val = 4;
+		break;
+	case 32 << 20:
+		size_val = 5;
+		break;
+	case 64 << 20:
+		size_val = 6;
+		break;
+	case 128 << 20:
+		size_val = 7;
+		break;
+	}
+	pbcr = (pbcr & 0x0001ffff) | gd->bd->bi_flashstart | (size_val << 17);
+	mtebc(pb0cr, pbcr);
+
+	/*
+	 * Re-check to get correct base address
+	 */
+	flash_get_size(gd->bd->bi_flashstart, 0);
+
+	/* Monitor protection ON by default */
+	(void)flash_protect(FLAG_PROTECT_SET,
+			    -CFG_MONITOR_LEN,
+			    0xffffffff,
+			    &flash_info[0]);
+
+	/* Env protection ON by default */
+	(void)flash_protect(FLAG_PROTECT_SET,
+			    CFG_ENV_ADDR_REDUND,
+			    CFG_ENV_ADDR_REDUND + 2*CFG_ENV_SECT_SIZE - 1,
+			    &flash_info[0]);
+
+	/*
+	 * USB suff...
+	 */
+	/* SDR Setting */
+	mfsdr(SDR0_PFC1, sdr0_pfc1);
+	mfsdr(SDR0_USB0, usb2d0cr);
+	mfsdr(SDR0_USB2PHY0CR, usb2phy0cr);
+	mfsdr(SDR0_USB2H0CR, usb2h0cr);
+
+	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_XOCLK_MASK;
+	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_XOCLK_EXTERNAL;	/*0*/
+	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_WDINT_MASK;
+	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_WDINT_16BIT_30MHZ;	/*1*/
+	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DVBUS_MASK;
+	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DVBUS_PURDIS;		/*0*/
+	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_DWNSTR_MASK;
+	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_DWNSTR_HOST;		/*1*/
+	usb2phy0cr = usb2phy0cr &~SDR0_USB2PHY0CR_UTMICN_MASK;
+	usb2phy0cr = usb2phy0cr | SDR0_USB2PHY0CR_UTMICN_HOST;		/*1*/
+
+	/* An 8-bit/60MHz interface is the only possible alternative
+	   when connecting the Device to the PHY */
+	usb2h0cr   = usb2h0cr &~SDR0_USB2H0CR_WDINT_MASK;
+	usb2h0cr   = usb2h0cr | SDR0_USB2H0CR_WDINT_16BIT_30MHZ;	/*1*/
+
+	mtsdr(SDR0_PFC1, sdr0_pfc1);
+	mtsdr(SDR0_USB0, usb2d0cr);
+	mtsdr(SDR0_USB2PHY0CR, usb2phy0cr);
+	mtsdr(SDR0_USB2H0CR, usb2h0cr);
+
+	/*
+	 * Clear resets
+	 */
+	udelay (1000);
+	mtsdr(SDR0_SRST1, 0x00000000);
+	udelay (1000);
+	mtsdr(SDR0_SRST0, 0x00000000);
+
+	printf("USB:   Host(int phy) Device(ext phy)\n");
+
+	/*
+	 * Clear PLB4A0_ACR[WRP]
+	 * This fix will make the MAL burst disabling patch for the Linux
+	 * EMAC driver obsolete.
+	 */
+	reg = mfdcr(plb4_acr) & ~PLB4_ACR_WRP;
+	mtdcr(plb4_acr, reg);
+
+	/*
+	 * Reset Lime controller
+	 */
+	gpio_write_bit(CFG_GPIO_LIME_S, 1);
+	udelay(500);
+	gpio_write_bit(CFG_GPIO_LIME_RST, 1);
+
+	/*
+	 * Reset PHY's
+	 */
+	gpio_write_bit(CFG_GPIO_PHY0_RST, 0);
+	gpio_write_bit(CFG_GPIO_PHY1_RST, 0);
+	udelay(100);
+	gpio_write_bit(CFG_GPIO_PHY0_RST, 1);
+	gpio_write_bit(CFG_GPIO_PHY1_RST, 1);
+
+	/*
+	 * Reset USB hub
+	 */
+	gpio_write_bit(CFG_GPIO_HUB_RST, 0);
+	udelay(100);
+	gpio_write_bit(CFG_GPIO_HUB_RST, 1);
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	char *s = getenv("serial#");
+
+	printf("Board: lwmon5");
+
+	if (s != NULL) {
+		puts(", serial# ");
+		puts(s);
+	}
+	putc('\n');
+
+	return (0);
+}
+
+#if defined(CFG_DRAM_TEST)
+int testdram(void)
+{
+	unsigned long *mem = (unsigned long *)0;
+	const unsigned long kend = (1024 / sizeof(unsigned long));
+	unsigned long k, n;
+
+	mtmsr(0);
+
+	for (k = 0; k < CFG_MBYTES_SDRAM;
+	     ++k, mem += (1024 / sizeof(unsigned long))) {
+		if ((k & 1023) == 0) {
+			printf("%3d MB\r", k / 1024);
+		}
+
+		memset(mem, 0xaaaaaaaa, 1024);
+		for (n = 0; n < kend; ++n) {
+			if (mem[n] != 0xaaaaaaaa) {
+				printf("SDRAM test fails at: %08x\n",
+				       (uint) & mem[n]);
+				return 1;
+			}
+		}
+
+		memset(mem, 0x55555555, 1024);
+		for (n = 0; n < kend; ++n) {
+			if (mem[n] != 0x55555555) {
+				printf("SDRAM test fails at: %08x\n",
+				       (uint) & mem[n]);
+				return 1;
+			}
+		}
+	}
+	printf("SDRAM test passes\n");
+	return 0;
+}
+#endif
+
+/*************************************************************************
+ *  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) && defined(CFG_PCI_PRE_INIT)
+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);
+
+	return 1;
+}
+#endif				/* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */
+
+/*************************************************************************
+ *  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(CFG_PCI_TARGET_INIT)
+void pci_target_init(struct pci_controller *hose)
+{
+	/*--------------------------------------------------------------------------+
+	 * Set up Direct MMIO registers
+	 *--------------------------------------------------------------------------*/
+	/*--------------------------------------------------------------------------+
+	  | PowerPC440EPX 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);	/* PMM0 Mask/Attribute - disabled b4 setting */
+	out32r(PCIX0_PMM0LA, CFG_PCI_MEMBASE);	/* PMM0 Local Address */
+	out32r(PCIX0_PMM0PCILA, CFG_PCI_MEMBASE);	/* PMM0 PCI Low Address */
+	out32r(PCIX0_PMM0PCIHA, 0x00000000);	/* PMM0 PCI High Address */
+	out32r(PCIX0_PMM0MA, 0xE0000001);	/* 512M + No prefetching, and enable region */
+
+	out32r(PCIX0_PMM1MA, 0x00000000);	/* PMM0 Mask/Attribute - disabled b4 setting */
+	out32r(PCIX0_PMM1LA, CFG_PCI_MEMBASE2); /* PMM0 Local Address */
+	out32r(PCIX0_PMM1PCILA, CFG_PCI_MEMBASE2);	/* PMM0 PCI Low Address */
+	out32r(PCIX0_PMM1PCIHA, 0x00000000);	/* PMM0 PCI High Address */
+	out32r(PCIX0_PMM1MA, 0xE0000001);	/* 512M + No prefetching, and enable region */
+
+	out32r(PCIX0_PTM1MS, 0x00000001);	/* Memory Size/Attribute */
+	out32r(PCIX0_PTM1LA, 0);	/* Local Addr. Reg */
+	out32r(PCIX0_PTM2MS, 0);	/* Memory Size/Attribute */
+	out32r(PCIX0_PTM2LA, 0);	/* Local Addr. Reg */
+
+	/*--------------------------------------------------------------------------+
+	 * Set up Configuration registers
+	 *--------------------------------------------------------------------------*/
+
+	/* Program the board's subsystem id/vendor id */
+	pci_write_config_word(0, PCI_SUBSYSTEM_VENDOR_ID,
+			      CFG_PCI_SUBSYS_VENDORID);
+	pci_write_config_word(0, PCI_SUBSYSTEM_ID, CFG_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(CFG_PCI_TARGET_INIT) */
+
+/*************************************************************************
+ *  pci_master_init
+ *
+ ************************************************************************/
+#if defined(CONFIG_PCI) && defined(CFG_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(CFG_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)
+{
+	/* Cactus is always configured as host. */
+	return (1);
+}
+#endif				/* defined(CONFIG_PCI) */
+
+void hw_watchdog_reset(void)
+{
+	int val;
+
+	/*
+	 * Toggle watchdog output
+	 */
+	val = gpio_read_out_bit(CFG_GPIO_WATCHDOG) == 0 ? 1 : 0;
+	gpio_write_bit(CFG_GPIO_WATCHDOG, val);
+}