static u8 exchange_bit(u8 val, u8 cs)
{
/* place the data */
OCELOT_FPGA_WRITE((val << 2) | cs, EEPROM_MODE);
burn_clocks();
/* turn the clock on */
OCELOT_FPGA_WRITE((val << 2) | cs | 0x2, EEPROM_MODE);
burn_clocks();
/* turn the clock off and read-strobe */
OCELOT_FPGA_WRITE((val << 2) | cs | 0x10, EEPROM_MODE);
/* return the data */
return ((OCELOT_FPGA_READ(EEPROM_MODE) >> 3) & 0x1);
}
/* unmask an interrupt -- 0 is enable, 1 is disable */
static inline void unmask_uart_irq(unsigned int irq)
{
uint8_t value;
value = OCELOT_FPGA_READ(UART_INTMASK);
value &= ~(1 << (irq - 74));
OCELOT_FPGA_WRITE(value, UART_INTMASK);
/* read the value back to assure that it's really been written */
value = OCELOT_FPGA_READ(UART_INTMASK);
}
/* unmask an interrupt -- 0 is enable, 1 is disable */
static inline void unmask_cpci_irq(unsigned int irq)
{
uint32_t value;
value = OCELOT_FPGA_READ(INTMASK);
value &= ~(1 << (irq - CPCI_IRQ_BASE));
OCELOT_FPGA_WRITE(value, INTMASK);
/* read the value back to assure that it's really been written */
value = OCELOT_FPGA_READ(INTMASK);
}
void __init momenco_ocelot_c_setup(void)
{
unsigned int tmpword;
board_time_init = momenco_time_init;
_machine_restart = momenco_ocelot_restart;
_machine_halt = momenco_ocelot_halt;
_machine_power_off = momenco_ocelot_power_off;
/*
* initrd_start = (ulong)ocelot_initrd_start;
* initrd_end = (ulong)ocelot_initrd_start + (ulong)ocelot_initrd_size;
* initrd_below_start_ok = 1;
*/
/* do handoff reconfiguration */
PMON_v2_setup();
/* shut down ethernet ports, just to be sure our memory doesn't get
* corrupted by random ethernet traffic.
*/
MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0), 0xff << 8);
MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1), 0xff << 8);
MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0), 0xff << 8);
MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1), 0xff << 8);
do {}
while (MV_READ_DATA(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0)) & 0xff);
do {}
while (MV_READ_DATA(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1)) & 0xff);
do {}
while (MV_READ_DATA(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0)) & 0xff);
do {}
while (MV_READ_DATA(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1)) & 0xff);
MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0), MV_READ_DATA(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0)) & ~1);
MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1), MV_READ_DATA(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1)) & ~1);
/* Turn off the Bit-Error LED */
OCELOT_FPGA_WRITE(0x80, CLR);
tmpword = OCELOT_FPGA_READ(BOARDREV);
#ifdef CONFIG_CPU_SR71000
if (tmpword < 26)
printk("Momenco Ocelot-CS: Board Assembly Rev. %c\n",
'A'+tmpword);
else
printk("Momenco Ocelot-CS: Board Assembly Revision #0x%x\n",
tmpword);
#else
if (tmpword < 26)
printk("Momenco Ocelot-C: Board Assembly Rev. %c\n",
'A'+tmpword);
else
printk("Momenco Ocelot-C: Board Assembly Revision #0x%x\n",
tmpword);
#endif
tmpword = OCELOT_FPGA_READ(FPGA_REV);
printk("FPGA Rev: %d.%d\n", tmpword>>4, tmpword&15);
tmpword = OCELOT_FPGA_READ(RESET_STATUS);
printk("Reset reason: 0x%x\n", tmpword);
switch (tmpword) {
case 0x1:
printk(" - Power-up reset\n");
break;
case 0x2:
printk(" - Push-button reset\n");
break;
case 0x4:
printk(" - cPCI bus reset\n");
break;
case 0x8:
printk(" - Watchdog reset\n");
break;
case 0x10:
printk(" - Software reset\n");
break;
default:
printk(" - Unknown reset cause\n");
}
reset_reason = tmpword;
OCELOT_FPGA_WRITE(0xff, RESET_STATUS);
tmpword = OCELOT_FPGA_READ(CPCI_ID);
printk("cPCI ID register: 0x%02x\n", tmpword);
printk(" - Slot number: %d\n", tmpword & 0x1f);
printk(" - PCI bus present: %s\n", tmpword & 0x40 ? "yes" : "no");
printk(" - System Slot: %s\n", tmpword & 0x20 ? "yes" : "no");
tmpword = OCELOT_FPGA_READ(BOARD_STATUS);
printk("Board Status register: 0x%02x\n", tmpword);
printk(" - User jumper: %s\n", (tmpword & 0x80)?"installed":"absent");
printk(" - Boot flash write jumper: %s\n", (tmpword&0x40)?"installed":"absent");
printk(" - L3 Cache size: %d MiB\n", (1<<((tmpword&12) >> 2))&~1);
printk(" - SDRAM size: %d MiB\n", 1<<(6+(tmpword&3)));
switch(tmpword &3) {
case 3:
/* 512MiB */
add_memory_region(0x0, 0x200<<20, BOOT_MEM_RAM);
break;
case 2:
/* 256MiB */
add_memory_region(0x0, 0x100<<20, BOOT_MEM_RAM);
break;
case 1:
/* 128MiB */
add_memory_region(0x0, 0x80<<20, BOOT_MEM_RAM);
break;
case 0:
/* 1GiB -- needs CONFIG_HIGHMEM */
add_memory_region(0x0, 0x400<<20, BOOT_MEM_RAM);
break;
}
}
void __init plat_setup(void)
{
unsigned int tmpword;
board_time_init = momenco_time_init;
_machine_restart = momenco_ocelot_restart;
_machine_halt = momenco_ocelot_halt;
pm_power_off = momenco_ocelot_power_off;
/* Wired TLB entries */
setup_wired_tlb_entries();
/* shut down ethernet ports, just to be sure our memory doesn't get
* corrupted by random ethernet traffic.
*/
MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0), 0xff << 8);
MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1), 0xff << 8);
MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0), 0xff << 8);
MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1), 0xff << 8);
do {}
while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0)) & 0xff);
do {}
while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1)) & 0xff);
do {}
while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0)) & 0xff);
do {}
while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1)) & 0xff);
MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0),
MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0)) & ~1);
MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1),
MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1)) & ~1);
/* Turn off the Bit-Error LED */
OCELOT_FPGA_WRITE(0x80, CLR);
tmpword = OCELOT_FPGA_READ(BOARDREV);
if (tmpword < 26)
printk("Momenco Ocelot-3: Board Assembly Rev. %c\n",
'A'+tmpword);
else
printk("Momenco Ocelot-3: Board Assembly Revision #0x%x\n",
tmpword);
tmpword = OCELOT_FPGA_READ(FPGA_REV);
printk("FPGA Rev: %d.%d\n", tmpword>>4, tmpword&15);
tmpword = OCELOT_FPGA_READ(RESET_STATUS);
printk("Reset reason: 0x%x\n", tmpword);
switch (tmpword) {
case 0x1:
printk(" - Power-up reset\n");
break;
case 0x2:
printk(" - Push-button reset\n");
break;
case 0x4:
printk(" - cPCI bus reset\n");
break;
case 0x8:
printk(" - Watchdog reset\n");
break;
case 0x10:
printk(" - Software reset\n");
break;
default:
printk(" - Unknown reset cause\n");
}
reset_reason = tmpword;
OCELOT_FPGA_WRITE(0xff, RESET_STATUS);
tmpword = OCELOT_FPGA_READ(CPCI_ID);
printk("cPCI ID register: 0x%02x\n", tmpword);
printk(" - Slot number: %d\n", tmpword & 0x1f);
printk(" - PCI bus present: %s\n", tmpword & 0x40 ? "yes" : "no");
printk(" - System Slot: %s\n", tmpword & 0x20 ? "yes" : "no");
tmpword = OCELOT_FPGA_READ(BOARD_STATUS);
printk("Board Status register: 0x%02x\n", tmpword);
printk(" - User jumper: %s\n", (tmpword & 0x80)?"installed":"absent");
printk(" - Boot flash write jumper: %s\n", (tmpword&0x40)?"installed":"absent");
printk(" - L3 cache size: %d MB\n", (1<<((tmpword&12) >> 2))&~1);
/* Support for 128 MB memory */
add_memory_region(0x0, 0x08000000, BOOT_MEM_RAM);
}