#include <common.h>
#include <asm/io.h>
#include <asm/ic/sc520.h>
+#include <net.h>
+#include <netdev.h>
#ifdef CONFIG_HW_WATCHDOG
#include <watchdog.h>
unsigned long monitor_flash_len = CONFIG_SYS_MONITOR_LEN;
-void init_sc520_enet (void)
-{
- /* Set CPU Speed to 100MHz */
- sc520_mmcr->cpuctl = 0x01;
-
- /* wait at least one millisecond */
- asm("movl $0x2000,%%ecx\n"
- "0: pushl %%ecx\n"
- "popl %%ecx\n"
- "loop 0b\n": : : "ecx");
-
- /* turn on the SDRAM write buffer */
- sc520_mmcr->dbctl = 0x11;
-
- /* turn on the cache and disable write through */
- asm("movl %%cr0, %%eax\n"
- "andl $0x9fffffff, %%eax\n"
- "movl %%eax, %%cr0\n" : : : "eax");
-}
+static void enet_timer_isr(void);
+static void enet_toggle_run_led(void);
/*
* Miscellaneous platform dependent initializations
*/
int board_early_init_f(void)
{
- init_sc520_enet();
-
- sc520_mmcr->gpcsrt = 0x01; /* GP Chip Select Recovery Time */
- sc520_mmcr->gpcspw = 0x07; /* GP Chip Select Pulse Width */
- sc520_mmcr->gpcsoff = 0x00; /* GP Chip Select Offset */
- sc520_mmcr->gprdw = 0x05; /* GP Read pulse width */
- sc520_mmcr->gprdoff = 0x01; /* GP Read offset */
- sc520_mmcr->gpwrw = 0x05; /* GP Write pulse width */
- sc520_mmcr->gpwroff = 0x01; /* GP Write offset */
-
- sc520_mmcr->piodata15_0 = 0x0630; /* PIO15_PIO0 Data */
- sc520_mmcr->piodata31_16 = 0x2000; /* PIO31_PIO16 Data */
- sc520_mmcr->piodir31_16 = 0x2000; /* GPIO Direction */
- sc520_mmcr->piodir15_0 = 0x87b5; /* GPIO Direction */
- sc520_mmcr->piopfs31_16 = 0x0dfe; /* GPIO pin function 31-16 reg */
- sc520_mmcr->piopfs15_0 = 0x200a; /* GPIO pin function 15-0 reg */
- sc520_mmcr->cspfs = 0x00f8; /* Chip Select Pin Function Select */
-
- sc520_mmcr->par[2] = 0x200713f8; /* Uart A (GPCS0, 0x013f8, 8 Bytes) */
- sc520_mmcr->par[3] = 0x2c0712f8; /* Uart B (GPCS3, 0x012f8, 8 Bytes) */
- sc520_mmcr->par[4] = 0x300711f8; /* Uart C (GPCS4, 0x011f8, 8 Bytes) */
- sc520_mmcr->par[5] = 0x340710f8; /* Uart D (GPCS5, 0x010f8, 8 Bytes) */
- sc520_mmcr->par[6] = 0xe3ffc000; /* SDRAM (0x00000000, 128MB) */
- sc520_mmcr->par[7] = 0xaa3fd000; /* StrataFlash (ROMCS1, 0x10000000, 16MB) */
- sc520_mmcr->par[8] = 0xca3fd100; /* StrataFlash (ROMCS2, 0x11000000, 16MB) */
- sc520_mmcr->par[9] = 0x4203d900; /* SRAM (GPCS0, 0x19000000, 1MB) */
- sc520_mmcr->par[10] = 0x4e03d910; /* SRAM (GPCS3, 0x19100000, 1MB) */
- sc520_mmcr->par[11] = 0x50018100; /* DP-RAM (GPCS4, 0x18100000, 4kB) */
- sc520_mmcr->par[12] = 0x54020000; /* CFLASH1 (0x200000000, 4kB) */
- sc520_mmcr->par[13] = 0x5c020001; /* CFLASH2 (0x200010000, 4kB) */
-/* sc520_mmcr->par14 = 0x8bfff800; */ /* BOOTCS at 0x18000000 */
-/* sc520_mmcr->par15 = 0x38201000; */ /* LEDs etc (GPCS6, 0x1000, 20 Bytes */
+ u16 pio_out_cfg = 0x0000;
+
+ /* Configure General Purpose Bus timing */
+ writeb(CONFIG_SYS_SC520_GPCSRT, &sc520_mmcr->gpcsrt);
+ writeb(CONFIG_SYS_SC520_GPCSPW, &sc520_mmcr->gpcspw);
+ writeb(CONFIG_SYS_SC520_GPCSOFF, &sc520_mmcr->gpcsoff);
+ writeb(CONFIG_SYS_SC520_GPRDW, &sc520_mmcr->gprdw);
+ writeb(CONFIG_SYS_SC520_GPRDOFF, &sc520_mmcr->gprdoff);
+ writeb(CONFIG_SYS_SC520_GPWRW, &sc520_mmcr->gpwrw);
+ writeb(CONFIG_SYS_SC520_GPWROFF, &sc520_mmcr->gpwroff);
+
+ /* Configure Programmable Input/Output Pins */
+ writew(CONFIG_SYS_SC520_PIODIR15_0, &sc520_mmcr->piodir15_0);
+ writew(CONFIG_SYS_SC520_PIODIR31_16, &sc520_mmcr->piodir31_16);
+ writew(CONFIG_SYS_SC520_PIOPFS31_16, &sc520_mmcr->piopfs31_16);
+ writew(CONFIG_SYS_SC520_PIOPFS15_0, &sc520_mmcr->piopfs15_0);
+ writeb(CONFIG_SYS_SC520_CSPFS, &sc520_mmcr->cspfs);
+ writeb(CONFIG_SYS_SC520_CLKSEL, &sc520_mmcr->clksel);
+
+ /*
+ * Turn off top board
+ * Set StrataFlash chips to 16-bit width
+ * Set StrataFlash chips to normal (non reset/power down) mode
+ */
+ pio_out_cfg |= CONFIG_SYS_ENET_TOP_BRD_PWR;
+ pio_out_cfg |= CONFIG_SYS_ENET_SF_WIDTH;
+ pio_out_cfg |= CONFIG_SYS_ENET_SF1_MODE;
+ pio_out_cfg |= CONFIG_SYS_ENET_SF2_MODE;
+ writew(pio_out_cfg, &sc520_mmcr->pioset15_0);
+
+ /* Turn off auxiliary power output */
+ writew(CONFIG_SYS_ENET_AUX_PWR, &sc520_mmcr->pioclr15_0);
+
+ /* Clear FPGA program mode */
+ writew(CONFIG_SYS_ENET_FPGA_PROG, &sc520_mmcr->pioset31_16);
+
+ /* Configure Programmable Address Regions */
+ writel(CONFIG_SYS_SC520_UARTA_PAR, &sc520_mmcr->par[2]);
+ writel(CONFIG_SYS_SC520_UARTB_PAR, &sc520_mmcr->par[3]);
+ writel(CONFIG_SYS_SC520_UARTC_PAR, &sc520_mmcr->par[4]);
+ writel(CONFIG_SYS_SC520_UARTD_PAR, &sc520_mmcr->par[5]);
+ writel(CONFIG_SYS_SC520_SDRAM_PAR, &sc520_mmcr->par[6]);
+ writel(CONFIG_SYS_SC520_SF1_PAR, &sc520_mmcr->par[7]);
+ writel(CONFIG_SYS_SC520_SF2_PAR, &sc520_mmcr->par[8]);
+ writel(CONFIG_SYS_SC520_SRAM1_PAR, &sc520_mmcr->par[9]);
+ writel(CONFIG_SYS_SC520_SRAM2_PAR, &sc520_mmcr->par[10]);
+ writel(CONFIG_SYS_SC520_DPRAM_PAR, &sc520_mmcr->par[11]);
+ writel(CONFIG_SYS_SC520_CF1_PAR, &sc520_mmcr->par[12]);
+ writel(CONFIG_SYS_SC520_CF2_PAR, &sc520_mmcr->par[13]);
+/* writel(CONFIG_SYS_SC520_BOOTCS_PAR, &sc520_mmcr->par14); */
+/* writel(CONFIG_SYS_SC520_LLIO_PAR, &sc520_mmcr->par15); */
/* Disable Watchdog */
- sc520_mmcr->wdtmrctl = 0x3333;
- sc520_mmcr->wdtmrctl = 0xcccc;
- sc520_mmcr->wdtmrctl = 0x0000;
+ writew(0x3333, &sc520_mmcr->wdtmrctl);
+ writew(0xcccc, &sc520_mmcr->wdtmrctl);
+ writew(0x0000, &sc520_mmcr->wdtmrctl);
/* Chip Select Configuration */
- sc520_mmcr->bootcsctl = 0x0033;
- sc520_mmcr->romcs1ctl = 0x0615;
- sc520_mmcr->romcs2ctl = 0x0615;
+ writew(CONFIG_SYS_SC520_BOOTCS_CTRL, &sc520_mmcr->bootcsctl);
+ writew(CONFIG_SYS_SC520_ROMCS1_CTRL, &sc520_mmcr->romcs1ctl);
+ writew(CONFIG_SYS_SC520_ROMCS2_CTRL, &sc520_mmcr->romcs2ctl);
+
+ writeb(CONFIG_SYS_SC520_ADDDECCTL, &sc520_mmcr->adddecctl);
+ writeb(CONFIG_SYS_SC520_UART1CTL, &sc520_mmcr->uart1ctl);
+ writeb(CONFIG_SYS_SC520_UART2CTL, &sc520_mmcr->uart2ctl);
+
+ writeb(CONFIG_SYS_SC520_SYSARBCTL, &sc520_mmcr->sysarbctl);
+ writew(CONFIG_SYS_SC520_SYSARBMENB, &sc520_mmcr->sysarbmenb);
- sc520_mmcr->adddecctl = 0x02;
- sc520_mmcr->uart1ctl = 0x07;
- sc520_mmcr->sysarbctl = 0x06;
- sc520_mmcr->sysarbmenb = 0x0003;
+ /* enable posted-writes */
+ writeb(CONFIG_SYS_SC520_HBCTL, &sc520_mmcr->hbctl);
return 0;
}
major = minor = 0;
+ outb(0x00, LED_LATCH_ADDRESS);
+
+ register_timer_isr (enet_timer_isr);
+
printf("Serck Controls eNET\n");
return 0;
} else
return 0;
}
+
+int board_eth_init(bd_t *bis)
+{
+ return pci_eth_init(bis);
+}
+
+void setup_pcat_compatibility()
+{
+ /* disable global interrupt mode */
+ writeb(0x40, &sc520_mmcr->picicr);
+
+ /* set all irqs to edge */
+ writeb(0x00, &sc520_mmcr->pic_mode[0]);
+ writeb(0x00, &sc520_mmcr->pic_mode[1]);
+ writeb(0x00, &sc520_mmcr->pic_mode[2]);
+
+ /*
+ * active low polarity on PIC interrupt pins,
+ * active high polarity on all other irq pins
+ */
+ writew(0x0000,&sc520_mmcr->intpinpol);
+
+ /*
+ * PIT 0 -> IRQ0
+ * RTC -> IRQ8
+ * FP error -> IRQ13
+ * UART1 -> IRQ4
+ * UART2 -> IRQ3
+ */
+ writeb(SC520_IRQ0, &sc520_mmcr->pit_int_map[0]);
+ writeb(SC520_IRQ8, &sc520_mmcr->rtcmap);
+ writeb(SC520_IRQ13, &sc520_mmcr->ferrmap);
+ writeb(SC520_IRQ4, &sc520_mmcr->uart_int_map[0]);
+ writeb(SC520_IRQ3, &sc520_mmcr->uart_int_map[1]);
+
+ /* Disable all other interrupt sources */
+ writeb(SC520_IRQ_DISABLED, &sc520_mmcr->gp_tmr_int_map[0]);
+ writeb(SC520_IRQ_DISABLED, &sc520_mmcr->gp_tmr_int_map[1]);
+ writeb(SC520_IRQ_DISABLED, &sc520_mmcr->gp_tmr_int_map[2]);
+ writeb(SC520_IRQ_DISABLED, &sc520_mmcr->pit_int_map[1]);
+ writeb(SC520_IRQ_DISABLED, &sc520_mmcr->pit_int_map[2]);
+ writeb(SC520_IRQ_DISABLED, &sc520_mmcr->ssimap);
+ writeb(SC520_IRQ_DISABLED, &sc520_mmcr->wdtmap);
+ writeb(SC520_IRQ_DISABLED, &sc520_mmcr->wpvmap);
+ writeb(SC520_IRQ_DISABLED, &sc520_mmcr->icemap);
+}
+
+void enet_timer_isr(void)
+{
+ static long enet_ticks = 0;
+
+ enet_ticks++;
+
+ /* Toggle Watchdog every 100ms */
+ if ((enet_ticks % 100) == 0)
+ hw_watchdog_reset();
+
+ /* Toggle Run LED every 500ms */
+ if ((enet_ticks % 500) == 0)
+ enet_toggle_run_led();
+}
+
+void hw_watchdog_reset(void)
+{
+ /* Watchdog Reset must be atomic */
+ long flag = disable_interrupts();
+
+ if (sc520_mmcr->piodata15_0 & WATCHDOG_PIO_BIT)
+ sc520_mmcr->pioclr15_0 = WATCHDOG_PIO_BIT;
+ else
+ sc520_mmcr->pioset15_0 = WATCHDOG_PIO_BIT;
+
+ if (flag)
+ enable_interrupts();
+}
+
+void enet_toggle_run_led(void)
+{
+ unsigned char leds_state= inb(LED_LATCH_ADDRESS);
+ if (leds_state & LED_RUN_BITMASK)
+ outb(leds_state &~ LED_RUN_BITMASK, LED_LATCH_ADDRESS);
+ else
+ outb(leds_state | LED_RUN_BITMASK, LED_LATCH_ADDRESS);
+}
projects / u-boot / blobdiff