ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/mips/txx9/generic/setup_tx4927.c b/marvell/linux/arch/mips/txx9/generic/setup_tx4927.c
new file mode 100644
index 0000000..46e9c41
--- /dev/null
+++ b/marvell/linux/arch/mips/txx9/generic/setup_tx4927.c
@@ -0,0 +1,337 @@
+/*
+ * TX4927 setup routines
+ * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
+ * and RBTX49xx patch from CELF patch archive.
+ *
+ * 2003-2005 (c) MontaVista Software, Inc.
+ * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/param.h>
+#include <linux/ptrace.h>
+#include <linux/mtd/physmap.h>
+#include <asm/reboot.h>
+#include <asm/traps.h>
+#include <asm/txx9irq.h>
+#include <asm/txx9tmr.h>
+#include <asm/txx9pio.h>
+#include <asm/txx9/generic.h>
+#include <asm/txx9/dmac.h>
+#include <asm/txx9/tx4927.h>
+
+static void __init tx4927_wdr_init(void)
+{
+ /* report watchdog reset status */
+ if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDRST)
+ pr_warn("Watchdog reset detected at 0x%lx\n",
+ read_c0_errorepc());
+ /* clear WatchDogReset (W1C) */
+ tx4927_ccfg_set(TX4927_CCFG_WDRST);
+ /* do reset on watchdog */
+ tx4927_ccfg_set(TX4927_CCFG_WR);
+}
+
+void __init tx4927_wdt_init(void)
+{
+ txx9_wdt_init(TX4927_TMR_REG(2) & 0xfffffffffULL);
+}
+
+static void tx4927_machine_restart(char *command)
+{
+ local_irq_disable();
+ pr_emerg("Rebooting (with %s watchdog reset)...\n",
+ (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDREXEN) ?
+ "external" : "internal");
+ /* clear watchdog status */
+ tx4927_ccfg_set(TX4927_CCFG_WDRST); /* W1C */
+ txx9_wdt_now(TX4927_TMR_REG(2) & 0xfffffffffULL);
+ while (!(____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDRST))
+ ;
+ mdelay(10);
+ if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_WDREXEN) {
+ pr_emerg("Rebooting (with internal watchdog reset)...\n");
+ /* External WDRST failed. Do internal watchdog reset */
+ tx4927_ccfg_clear(TX4927_CCFG_WDREXEN);
+ }
+ /* fallback */
+ (*_machine_halt)();
+}
+
+void show_registers(struct pt_regs *regs);
+static int tx4927_be_handler(struct pt_regs *regs, int is_fixup)
+{
+ int data = regs->cp0_cause & 4;
+ console_verbose();
+ pr_err("%cBE exception at %#lx\n", data ? 'D' : 'I', regs->cp0_epc);
+ pr_err("ccfg:%llx, toea:%llx\n",
+ (unsigned long long)____raw_readq(&tx4927_ccfgptr->ccfg),
+ (unsigned long long)____raw_readq(&tx4927_ccfgptr->toea));
+#ifdef CONFIG_PCI
+ tx4927_report_pcic_status();
+#endif
+ show_registers(regs);
+ panic("BusError!");
+}
+static void __init tx4927_be_init(void)
+{
+ board_be_handler = tx4927_be_handler;
+}
+
+static struct resource tx4927_sdram_resource[4];
+
+void __init tx4927_setup(void)
+{
+ int i;
+ __u32 divmode;
+ unsigned int cpuclk = 0;
+ u64 ccfg;
+
+ txx9_reg_res_init(TX4927_REV_PCODE(), TX4927_REG_BASE,
+ TX4927_REG_SIZE);
+ set_c0_config(TX49_CONF_CWFON);
+
+ /* SDRAMC,EBUSC are configured by PROM */
+ for (i = 0; i < 8; i++) {
+ if (!(TX4927_EBUSC_CR(i) & 0x8))
+ continue; /* disabled */
+ txx9_ce_res[i].start = (unsigned long)TX4927_EBUSC_BA(i);
+ txx9_ce_res[i].end =
+ txx9_ce_res[i].start + TX4927_EBUSC_SIZE(i) - 1;
+ request_resource(&iomem_resource, &txx9_ce_res[i]);
+ }
+
+ /* clocks */
+ ccfg = ____raw_readq(&tx4927_ccfgptr->ccfg);
+ if (txx9_master_clock) {
+ /* calculate gbus_clock and cpu_clock from master_clock */
+ divmode = (__u32)ccfg & TX4927_CCFG_DIVMODE_MASK;
+ switch (divmode) {
+ case TX4927_CCFG_DIVMODE_8:
+ case TX4927_CCFG_DIVMODE_10:
+ case TX4927_CCFG_DIVMODE_12:
+ case TX4927_CCFG_DIVMODE_16:
+ txx9_gbus_clock = txx9_master_clock * 4; break;
+ default:
+ txx9_gbus_clock = txx9_master_clock;
+ }
+ switch (divmode) {
+ case TX4927_CCFG_DIVMODE_2:
+ case TX4927_CCFG_DIVMODE_8:
+ cpuclk = txx9_gbus_clock * 2; break;
+ case TX4927_CCFG_DIVMODE_2_5:
+ case TX4927_CCFG_DIVMODE_10:
+ cpuclk = txx9_gbus_clock * 5 / 2; break;
+ case TX4927_CCFG_DIVMODE_3:
+ case TX4927_CCFG_DIVMODE_12:
+ cpuclk = txx9_gbus_clock * 3; break;
+ case TX4927_CCFG_DIVMODE_4:
+ case TX4927_CCFG_DIVMODE_16:
+ cpuclk = txx9_gbus_clock * 4; break;
+ }
+ txx9_cpu_clock = cpuclk;
+ } else {
+ if (txx9_cpu_clock == 0)
+ txx9_cpu_clock = 200000000; /* 200MHz */
+ /* calculate gbus_clock and master_clock from cpu_clock */
+ cpuclk = txx9_cpu_clock;
+ divmode = (__u32)ccfg & TX4927_CCFG_DIVMODE_MASK;
+ switch (divmode) {
+ case TX4927_CCFG_DIVMODE_2:
+ case TX4927_CCFG_DIVMODE_8:
+ txx9_gbus_clock = cpuclk / 2; break;
+ case TX4927_CCFG_DIVMODE_2_5:
+ case TX4927_CCFG_DIVMODE_10:
+ txx9_gbus_clock = cpuclk * 2 / 5; break;
+ case TX4927_CCFG_DIVMODE_3:
+ case TX4927_CCFG_DIVMODE_12:
+ txx9_gbus_clock = cpuclk / 3; break;
+ case TX4927_CCFG_DIVMODE_4:
+ case TX4927_CCFG_DIVMODE_16:
+ txx9_gbus_clock = cpuclk / 4; break;
+ }
+ switch (divmode) {
+ case TX4927_CCFG_DIVMODE_8:
+ case TX4927_CCFG_DIVMODE_10:
+ case TX4927_CCFG_DIVMODE_12:
+ case TX4927_CCFG_DIVMODE_16:
+ txx9_master_clock = txx9_gbus_clock / 4; break;
+ default:
+ txx9_master_clock = txx9_gbus_clock;
+ }
+ }
+ /* change default value to udelay/mdelay take reasonable time */
+ loops_per_jiffy = txx9_cpu_clock / HZ / 2;
+
+ /* CCFG */
+ tx4927_wdr_init();
+ /* clear BusErrorOnWrite flag (W1C) */
+ tx4927_ccfg_set(TX4927_CCFG_BEOW);
+ /* enable Timeout BusError */
+ if (txx9_ccfg_toeon)
+ tx4927_ccfg_set(TX4927_CCFG_TOE);
+
+ /* DMA selection */
+ txx9_clear64(&tx4927_ccfgptr->pcfg, TX4927_PCFG_DMASEL_ALL);
+
+ /* Use external clock for external arbiter */
+ if (!(____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCIARB))
+ txx9_clear64(&tx4927_ccfgptr->pcfg, TX4927_PCFG_PCICLKEN_ALL);
+
+ pr_info("%s -- %dMHz(M%dMHz) CRIR:%08x CCFG:%llx PCFG:%llx\n",
+ txx9_pcode_str, (cpuclk + 500000) / 1000000,
+ (txx9_master_clock + 500000) / 1000000,
+ (__u32)____raw_readq(&tx4927_ccfgptr->crir),
+ ____raw_readq(&tx4927_ccfgptr->ccfg),
+ ____raw_readq(&tx4927_ccfgptr->pcfg));
+
+ pr_info("%s SDRAMC --", txx9_pcode_str);
+ for (i = 0; i < 4; i++) {
+ __u64 cr = TX4927_SDRAMC_CR(i);
+ unsigned long base, size;
+ if (!((__u32)cr & 0x00000400))
+ continue; /* disabled */
+ base = (unsigned long)(cr >> 49) << 21;
+ size = (((unsigned long)(cr >> 33) & 0x7fff) + 1) << 21;
+ pr_cont(" CR%d:%016llx", i, cr);
+ tx4927_sdram_resource[i].name = "SDRAM";
+ tx4927_sdram_resource[i].start = base;
+ tx4927_sdram_resource[i].end = base + size - 1;
+ tx4927_sdram_resource[i].flags = IORESOURCE_MEM;
+ request_resource(&iomem_resource, &tx4927_sdram_resource[i]);
+ }
+ pr_cont(" TR:%09llx\n", ____raw_readq(&tx4927_sdramcptr->tr));
+
+ /* TMR */
+ /* disable all timers */
+ for (i = 0; i < TX4927_NR_TMR; i++)
+ txx9_tmr_init(TX4927_TMR_REG(i) & 0xfffffffffULL);
+
+ /* PIO */
+ __raw_writel(0, &tx4927_pioptr->maskcpu);
+ __raw_writel(0, &tx4927_pioptr->maskext);
+
+ _machine_restart = tx4927_machine_restart;
+ board_be_init = tx4927_be_init;
+}
+
+void __init tx4927_time_init(unsigned int tmrnr)
+{
+ if (____raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_TINTDIS)
+ txx9_clockevent_init(TX4927_TMR_REG(tmrnr) & 0xfffffffffULL,
+ TXX9_IRQ_BASE + TX4927_IR_TMR(tmrnr),
+ TXX9_IMCLK);
+}
+
+void __init tx4927_sio_init(unsigned int sclk, unsigned int cts_mask)
+{
+ int i;
+
+ for (i = 0; i < 2; i++)
+ txx9_sio_init(TX4927_SIO_REG(i) & 0xfffffffffULL,
+ TXX9_IRQ_BASE + TX4927_IR_SIO(i),
+ i, sclk, (1 << i) & cts_mask);
+}
+
+void __init tx4927_mtd_init(int ch)
+{
+ struct physmap_flash_data pdata = {
+ .width = TX4927_EBUSC_WIDTH(ch) / 8,
+ };
+ unsigned long start = txx9_ce_res[ch].start;
+ unsigned long size = txx9_ce_res[ch].end - start + 1;
+
+ if (!(TX4927_EBUSC_CR(ch) & 0x8))
+ return; /* disabled */
+ txx9_physmap_flash_init(ch, start, size, &pdata);
+}
+
+void __init tx4927_dmac_init(int memcpy_chan)
+{
+ struct txx9dmac_platform_data plat_data = {
+ .memcpy_chan = memcpy_chan,
+ .have_64bit_regs = true,
+ };
+
+ txx9_dmac_init(0, TX4927_DMA_REG & 0xfffffffffULL,
+ TXX9_IRQ_BASE + TX4927_IR_DMA(0), &plat_data);
+}
+
+void __init tx4927_aclc_init(unsigned int dma_chan_out,
+ unsigned int dma_chan_in)
+{
+ u64 pcfg = __raw_readq(&tx4927_ccfgptr->pcfg);
+ __u64 dmasel_mask = 0, dmasel = 0;
+ unsigned long flags;
+
+ if (!(pcfg & TX4927_PCFG_SEL2))
+ return;
+ /* setup DMASEL (playback:ACLC ch0, capture:ACLC ch1) */
+ switch (dma_chan_out) {
+ case 0:
+ dmasel_mask |= TX4927_PCFG_DMASEL0_MASK;
+ dmasel |= TX4927_PCFG_DMASEL0_ACL0;
+ break;
+ case 2:
+ dmasel_mask |= TX4927_PCFG_DMASEL2_MASK;
+ dmasel |= TX4927_PCFG_DMASEL2_ACL0;
+ break;
+ default:
+ return;
+ }
+ switch (dma_chan_in) {
+ case 1:
+ dmasel_mask |= TX4927_PCFG_DMASEL1_MASK;
+ dmasel |= TX4927_PCFG_DMASEL1_ACL1;
+ break;
+ case 3:
+ dmasel_mask |= TX4927_PCFG_DMASEL3_MASK;
+ dmasel |= TX4927_PCFG_DMASEL3_ACL1;
+ break;
+ default:
+ return;
+ }
+ local_irq_save(flags);
+ txx9_clear64(&tx4927_ccfgptr->pcfg, dmasel_mask);
+ txx9_set64(&tx4927_ccfgptr->pcfg, dmasel);
+ local_irq_restore(flags);
+ txx9_aclc_init(TX4927_ACLC_REG & 0xfffffffffULL,
+ TXX9_IRQ_BASE + TX4927_IR_ACLC,
+ 0, dma_chan_out, dma_chan_in);
+}
+
+static void __init tx4927_stop_unused_modules(void)
+{
+ __u64 pcfg, rst = 0, ckd = 0;
+ char buf[128];
+
+ buf[0] = '\0';
+ local_irq_disable();
+ pcfg = ____raw_readq(&tx4927_ccfgptr->pcfg);
+ if (!(pcfg & TX4927_PCFG_SEL2)) {
+ rst |= TX4927_CLKCTR_ACLRST;
+ ckd |= TX4927_CLKCTR_ACLCKD;
+ strcat(buf, " ACLC");
+ }
+ if (rst | ckd) {
+ txx9_set64(&tx4927_ccfgptr->clkctr, rst);
+ txx9_set64(&tx4927_ccfgptr->clkctr, ckd);
+ }
+ local_irq_enable();
+ if (buf[0])
+ pr_info("%s: stop%s\n", txx9_pcode_str, buf);
+}
+
+static int __init tx4927_late_init(void)
+{
+ if (txx9_pcode != 0x4927)
+ return -ENODEV;
+ tx4927_stop_unused_modules();
+ return 0;
+}
+late_initcall(tx4927_late_init);