#include <common.h>
#include <asm/io.h>
-#include <asm/ic/sc520.h>
+#include <asm/arch/sc520.h>
+#include <net.h>
+#include <netdev.h>
#ifdef CONFIG_HW_WATCHDOG
#include <watchdog.h>
DECLARE_GLOBAL_DATA_PTR;
-#undef SC520_CDP_DEBUG
-
-#ifdef SC520_CDP_DEBUG
-#define PRINTF(fmt,args...) printf (fmt ,##args)
-#else
-#define PRINTF(fmt,args...)
-#endif
-
unsigned long monitor_flash_len = CONFIG_SYS_MONITOR_LEN;
-void init_sc520_enet (void)
-{
- /* Set CPU Speed to 100MHz */
- write_mmcr_byte(SC520_CPUCTL, 1);
- gd->cpu_clk = 100000000;
-
- /* wait at least one millisecond */
- asm("movl $0x2000,%%ecx\n"
- "wait_loop: pushl %%ecx\n"
- "popl %%ecx\n"
- "loop wait_loop\n": : : "ecx");
-
- /* turn on the SDRAM write buffer */
- write_mmcr_byte(SC520_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);
+static void enet_setup_pars(void);
/*
* Miscellaneous platform dependent initializations
*/
-int board_init(void)
+int board_early_init_f(void)
{
- init_sc520_enet();
-
- write_mmcr_byte(SC520_GPCSRT, 0x01); /* GP Chip Select Recovery Time */
- write_mmcr_byte(SC520_GPCSPW, 0x07); /* GP Chip Select Pulse Width */
- write_mmcr_byte(SC520_GPCSOFF, 0x00); /* GP Chip Select Offset */
- write_mmcr_byte(SC520_GPRDW, 0x05); /* GP Read pulse width */
- write_mmcr_byte(SC520_GPRDOFF, 0x01); /* GP Read offset */
- write_mmcr_byte(SC520_GPWRW, 0x05); /* GP Write pulse width */
- write_mmcr_byte(SC520_GPWROFF, 0x01); /* GP Write offset */
-
- write_mmcr_word(SC520_PIODATA15_0, 0x0630); /* PIO15_PIO0 Data */
- write_mmcr_word(SC520_PIODATA31_16, 0x2000); /* PIO31_PIO16 Data */
- write_mmcr_word(SC520_PIODIR31_16, 0x2000); /* GPIO Direction */
- write_mmcr_word(SC520_PIODIR15_0, 0x87b5); /* GPIO Direction */
- write_mmcr_word(SC520_PIOPFS31_16, 0x0dfe); /* GPIO pin function 31-16 reg */
- write_mmcr_word(SC520_PIOPFS15_0, 0x200a); /* GPIO pin function 15-0 reg */
- write_mmcr_byte(SC520_CSPFS, 0x00f8); /* Chip Select Pin Function Select */
-
- write_mmcr_long(SC520_PAR2, 0x200713f8); /* Uart A (GPCS0, 0x013f8, 8 Bytes) */
- write_mmcr_long(SC520_PAR3, 0x2c0712f8); /* Uart B (GPCS3, 0x012f8, 8 Bytes) */
- write_mmcr_long(SC520_PAR4, 0x300711f8); /* Uart C (GPCS4, 0x011f8, 8 Bytes) */
- write_mmcr_long(SC520_PAR5, 0x340710f8); /* Uart D (GPCS5, 0x010f8, 8 Bytes) */
- write_mmcr_long(SC520_PAR6, 0xe3ffc000); /* SDRAM (0x00000000, 128MB) */
- write_mmcr_long(SC520_PAR7, 0xaa3fd000); /* StrataFlash (ROMCS1, 0x10000000, 16MB) */
- write_mmcr_long(SC520_PAR8, 0xca3fd100); /* StrataFlash (ROMCS2, 0x11000000, 16MB) */
- write_mmcr_long(SC520_PAR9, 0x4203d900); /* SRAM (GPCS0, 0x19000000, 1MB) */
- write_mmcr_long(SC520_PAR10, 0x4e03d910); /* SRAM (GPCS3, 0x19100000, 1MB) */
- write_mmcr_long(SC520_PAR11, 0x50018100); /* DP-RAM (GPCS4, 0x18100000, 4kB) */
- write_mmcr_long(SC520_PAR12, 0x54020000); /* CFLASH1 (0x200000000, 4kB) */
- write_mmcr_long(SC520_PAR13, 0x5c020001); /* CFLASH2 (0x200010000, 4kB) */
-/* write_mmcr_long(SC520_PAR14, 0x8bfff800); */ /* BOOTCS at 0x18000000 */
-/* write_mmcr_long(SC520_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);
+
+ enet_setup_pars();
/* Disable Watchdog */
- write_mmcr_word(0x0cb0, 0x3333);
- write_mmcr_word(0x0cb0, 0xcccc);
- write_mmcr_word(0x0cb0, 0x0000);
+ writew(0x3333, &sc520_mmcr->wdtmrctl);
+ writew(0xcccc, &sc520_mmcr->wdtmrctl);
+ writew(0x0000, &sc520_mmcr->wdtmrctl);
/* Chip Select Configuration */
- write_mmcr_word(SC520_BOOTCSCTL, 0x0033);
- write_mmcr_word(SC520_ROMCS1CTL, 0x0615);
- write_mmcr_word(SC520_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);
- write_mmcr_byte(SC520_ADDDECCTL, 0x02);
- write_mmcr_byte(SC520_UART1CTL, 0x07);
- write_mmcr_byte(SC520_SYSARBCTL,0x06);
- write_mmcr_word(SC520_SYSARBMENB, 0x0003);
+ writeb(CONFIG_SYS_SC520_ADDDECCTL, &sc520_mmcr->adddecctl);
+ writeb(CONFIG_SYS_SC520_UART1CTL, &sc520_mmcr->uart1ctl);
+ writeb(CONFIG_SYS_SC520_UART2CTL, &sc520_mmcr->uart2ctl);
- /* Crystal is 33.000MHz */
- gd->bus_clk = 33000000;
+ writeb(CONFIG_SYS_SC520_SYSARBCTL, &sc520_mmcr->sysarbctl);
+ writew(CONFIG_SYS_SC520_SYSARBMENB, &sc520_mmcr->sysarbmenb);
+
+ /* enable posted-writes */
+ writeb(CONFIG_SYS_SC520_HBCTL, &sc520_mmcr->hbctl);
return 0;
}
-int dram_init(void)
+static void enet_setup_pars(void)
{
- init_sc520_dram();
+ /*
+ * PARs 11 and 12 are 2MB SRAM @ 0x19000000
+ *
+ * These are setup now because older version of U-Boot have them
+ * mapped to a different PAR which gets clobbered which prevents
+ * using SRAM for warm-booting a new image
+ */
+ writel(CONFIG_SYS_SC520_SRAM1_PAR, &sc520_mmcr->par[11]);
+ writel(CONFIG_SYS_SC520_SRAM2_PAR, &sc520_mmcr->par[12]);
+
+ /* PARs 0 and 1 are Compact Flash slots (4kB each) */
+ writel(CONFIG_SYS_SC520_CF1_PAR, &sc520_mmcr->par[0]);
+ writel(CONFIG_SYS_SC520_CF2_PAR, &sc520_mmcr->par[1]);
+
+ /* PAR 2 is used for Cache-As-RAM */
+
+ /*
+ * PARs 5 through 8 are additional NS16550 UARTS
+ * 8 bytes each @ 0x013f8, 0x012f8, 0x011f8 and 0x010f8
+ */
+ writel(CONFIG_SYS_SC520_UARTA_PAR, &sc520_mmcr->par[5]);
+ writel(CONFIG_SYS_SC520_UARTB_PAR, &sc520_mmcr->par[6]);
+ writel(CONFIG_SYS_SC520_UARTC_PAR, &sc520_mmcr->par[7]);
+ writel(CONFIG_SYS_SC520_UARTD_PAR, &sc520_mmcr->par[8]);
+
+ /* PARs 9 and 10 are 32MB StrataFlash @ 0x10000000 */
+ writel(CONFIG_SYS_SC520_SF1_PAR, &sc520_mmcr->par[9]);
+ writel(CONFIG_SYS_SC520_SF2_PAR, &sc520_mmcr->par[10]);
+
+ /* PAR 13 is 4kB DPRAM @ 0x18100000 (implemented in FPGA) */
+ writel(CONFIG_SYS_SC520_DPRAM_PAR, &sc520_mmcr->par[13]);
+
+ /*
+ * PAR 14 is Low Level I/O (LEDs, Hex Switches etc)
+ * Already configured in board_init16 (eNET_start16.S)
+ *
+ * PAR 15 is Boot ROM
+ * Already configured in board_init16 (eNET_start16.S)
+ */
+}
+
+
+int board_early_init_r(void)
+{
+ /* CPU Speed to 100MHz */
+ gd->cpu_clk = 100000000;
+
+ /* Crystal is 33.000MHz */
+ gd->bus_clk = 33000000;
+
return 0;
}
major = minor = 0;
+ outb(0x00, LED_LATCH_ADDRESS);
+
+ register_timer_isr(enet_timer_isr);
+
printf("Serck Controls eNET\n");
return 0;
}
-ulong board_flash_get_legacy (ulong base, int banknum, flash_info_t * info)
+ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
{
if (banknum == 0) { /* non-CFI boot flash */
info->portwidth = FLASH_CFI_8BIT;
info->chipwidth = FLASH_CFI_BY8;
info->interface = FLASH_CFI_X8;
return 1;
- } else
+ } 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;
+
+ 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 / karo-tx-uboot.git / blobdiff