--- /dev/null
+/*
+ * (C) Copyright 2005
+ * John Otken, jotken@softadvances.com
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/ppc4xx.h>
+#include <asm/processor.h>
+#include <asm/ppc4xx-isram.h>
+#include <spd_sdram.h>
+#include "epld.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
+
+
+/*************************************************************************
+ * int board_early_init_f()
+ *
+ ************************************************************************/
+int board_early_init_f(void)
+{
+ u32 mfr;
+
+ mtebc( PB0AP, 0x03800000 ); /* set chip selects */
+ mtebc( PB0CR, 0xffc58000 ); /* ebc0_b0cr, 4MB at 0xffc00000 CS0 */
+ mtebc( PB1AP, 0x03800000 );
+ mtebc( PB1CR, 0xff018000 ); /* ebc0_b1cr, 1MB at 0xff000000 CS1 */
+ mtebc( PB2AP, 0x03800000 );
+ mtebc( PB2CR, 0xff838000 ); /* ebc0_b2cr, 2MB at 0xff800000 CS2 */
+
+ mtdcr( UIC1SR, 0xffffffff ); /* Clear all interrupts */
+ mtdcr( UIC1ER, 0x00000000 ); /* disable all interrupts */
+ mtdcr( UIC1CR, 0x00000000 ); /* Set Critical / Non Critical interrupts */
+ mtdcr( UIC1PR, 0x7fff83ff ); /* Set Interrupt Polarities */
+ mtdcr( UIC1TR, 0x001f8000 ); /* Set Interrupt Trigger Levels */
+ mtdcr( UIC1VR, 0x00000001 ); /* Set Vect base=0,INT31 Highest priority */
+ mtdcr( UIC1SR, 0x00000000 ); /* clear all interrupts */
+ mtdcr( UIC1SR, 0xffffffff );
+
+ mtdcr( UIC0SR, 0xffffffff ); /* Clear all interrupts */
+ mtdcr( UIC0ER, 0x00000000 ); /* disable all interrupts excepted cascade */
+ mtdcr( UIC0CR, 0x00000001 ); /* Set Critical / Non Critical interrupts */
+ mtdcr( UIC0PR, 0xffffffff ); /* Set Interrupt Polarities */
+ mtdcr( UIC0TR, 0x01000004 ); /* Set Interrupt Trigger Levels */
+ mtdcr( UIC0VR, 0x00000001 ); /* Set Vect base=0,INT31 Highest priority */
+ mtdcr( UIC0SR, 0x00000000 ); /* clear all interrupts */
+ mtdcr( UIC0SR, 0xffffffff );
+
+ mfsdr(SDR0_MFR, mfr);
+ mfr |= SDR0_MFR_FIXD; /* Workaround for PCI/DMA */
+ mtsdr(SDR0_MFR, mfr);
+
+ return 0;
+}
+
+
+/*************************************************************************
+ * int misc_init_r()
+ *
+ ************************************************************************/
+int misc_init_r(void)
+{
+ volatile epld_t *x = (epld_t *) CONFIG_SYS_EPLD_BASE;
+
+ /* set modes of operation */
+ x->ethuart |= EPLD2_ETH_MODE_10 | EPLD2_ETH_MODE_100 |
+ EPLD2_ETH_MODE_1000 | EPLD2_ETH_DUPLEX_MODE;
+ /* clear ETHERNET_AUTO_NEGO bit to turn on autonegotiation */
+ x->ethuart &= ~EPLD2_ETH_AUTO_NEGO;
+
+ /* put Ethernet+PHY in reset */
+ x->ethuart &= ~EPLD2_RESET_ETH_N;
+ udelay(10000);
+ /* take Ethernet+PHY out of reset */
+ x->ethuart |= EPLD2_RESET_ETH_N;
+
+ return 0;
+}
+
+
+/*************************************************************************
+ * int checkboard()
+ *
+ ************************************************************************/
+int checkboard(void)
+{
+ char buf[64];
+ int i = getenv_f("serial#", buf, sizeof(buf));
+
+ printf("Board: Luan - AMCC PPC440SP Evaluation Board");
+
+ if (i > 0) {
+ puts(", serial# ");
+ puts(buf);
+ }
+ putc('\n');
+
+ return 0;
+}
+
+/*
+ * Override the default functions in arch/powerpc/cpu/ppc4xx/44x_spd_ddr2.c with
+ * board specific values.
+ */
+u32 ddr_clktr(u32 default_val) {
+ return (SDRAM_CLKTR_CLKP_180_DEG_ADV);
+}
+
+/*************************************************************************
+ * hw_watchdog_reset
+ *
+ * This routine is called to reset (keep alive) the watchdog timer
+ *
+ ************************************************************************/
+#if defined(CONFIG_HW_WATCHDOG)
+void hw_watchdog_reset(void)
+{
+}
+#endif
+
+
+/*************************************************************************
+ * int on_off()
+ *
+ ************************************************************************/
+static int on_off( const char *s )
+{
+ if (strcmp(s, "on") == 0) {
+ return 1;
+ } else if (strcmp(s, "off") == 0) {
+ return 0;
+ }
+ return -1;
+}
+
+
+/*************************************************************************
+ * void l2cache_disable()
+ *
+ ************************************************************************/
+static void l2cache_disable(void)
+{
+ mtdcr( L2_CACHE_CFG, 0 );
+}
+
+
+/*************************************************************************
+ * void l2cache_enable()
+ *
+ ************************************************************************/
+static void l2cache_enable(void) /* see p258 7.4.1 Enabling L2 Cache */
+{
+ mtdcr( L2_CACHE_CFG, 0x80000000 ); /* enable L2_MODE L2_CFG[L2M] */
+
+ mtdcr( L2_CACHE_ADDR, 0 ); /* set L2_ADDR with all zeros */
+
+ mtdcr( L2_CACHE_CMD, 0x80000000 ); /* issue HCLEAR command via L2_CMD */
+
+ while (!(mfdcr( L2_CACHE_STAT ) & 0x80000000 )) ;; /* poll L2_SR for completion */
+
+ mtdcr( L2_CACHE_CMD, 0x10000000 ); /* clear cache errors L2_CMD[CCP] */
+
+ mtdcr( L2_CACHE_CMD, 0x08000000 ); /* clear tag errors L2_CMD[CTE] */
+
+ mtdcr( L2_CACHE_SNP0, 0 ); /* snoop registers */
+ mtdcr( L2_CACHE_SNP1, 0 );
+
+ __asm__ volatile ("sync"); /* msync */
+
+ mtdcr( L2_CACHE_CFG, 0xe0000000 ); /* inst and data use L2 */
+
+ __asm__ volatile ("sync");
+}
+
+
+/*************************************************************************
+ * int l2cache_status()
+ *
+ ************************************************************************/
+static int l2cache_status(void)
+{
+ return (mfdcr( L2_CACHE_CFG ) & 0x60000000) != 0;
+}
+
+
+/*************************************************************************
+ * int do_l2cache()
+ *
+ ************************************************************************/
+int do_l2cache( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] )
+{
+ switch (argc) {
+ case 2: /* on / off */
+ switch (on_off(argv[1])) {
+ case 0: l2cache_disable();
+ break;
+ case 1: l2cache_enable();
+ break;
+ }
+ /* FALL TROUGH */
+ case 1: /* get status */
+ printf ("L2 Cache is %s\n",
+ l2cache_status() ? "ON" : "OFF");
+ return 0;
+ default:
+ return cmd_usage(cmdtp);
+ }
+
+ return 0;
+}
+
+
+U_BOOT_CMD(
+ l2cache, 2, 1, do_l2cache,
+ "enable or disable L2 cache",
+ "[on, off]\n"
+ " - enable or disable L2 cache"
+);
Code Review / kvmfornfv.git / blobdiff