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-rw-r--r--bsps/mips/include/libcpu/au1x00.h445
1 files changed, 445 insertions, 0 deletions
diff --git a/bsps/mips/include/libcpu/au1x00.h b/bsps/mips/include/libcpu/au1x00.h
new file mode 100644
index 0000000000..a85a39ed48
--- /dev/null
+++ b/bsps/mips/include/libcpu/au1x00.h
@@ -0,0 +1,445 @@
+/**
+ * @file
+ *
+ * AMD AU1X00 specific information
+ */
+
+/*
+ * Copyright (c) 2005 by Cogent Computer Systems
+ * Written by Jay Monkman <jtm@lopingdog.com>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef __AU1X00_H__
+#define __AU1X00_H__
+
+#define bit(x) (1 << (x))
+
+/* Au1x00 CP0 registers
+ */
+#define CP0_Index $0
+#define CP0_Random $1
+#define CP0_EntryLo0 $2
+#define CP0_EntryLo1 $3
+#define CP0_Context $4
+#define CP0_PageMask $5
+#define CP0_Wired $6
+#define CP0_BadVAddr $8
+#define CP0_Count $9
+#define CP0_EntryHi $10
+#define CP0_Compare $11
+#define CP0_Status $12
+#define CP0_Cause $13
+#define CP0_EPC $14
+#define CP0_PRId $15
+#define CP0_Config $16
+#define CP0_Config0 $16
+#define CP0_Config1 $16,1
+#define CP0_LLAddr $17
+#define CP0_WatchLo $18
+#define CP0_IWatchLo $18,1
+#define CP0_WatchHi $19
+#define CP0_IWatchHi $19,1
+#define CP0_Scratch $22
+#define CP0_Debug $23
+#define CP0_DEPC $24
+#define CP0_PerfCnt $25
+#define CP0_PerfCtrl $25,1
+#define CP0_DTag $28
+#define CP0_DData $28,1
+#define CP0_ITag $29
+#define CP0_IData $29,1
+#define CP0_ErrorEPC $30
+#define CP0_DESave $31
+
+/* Addresses common to all AU1x00 CPUs */
+#define AU1X00_MEM_ADDR 0xB4000000
+#define AU1X00_AC97_ADDR 0xB0000000
+#define AU1X00_USBH_ADDR 0xB0100000
+#define AU1X00_USBD_ADDR 0xB0200000
+#define AU1X00_MACDMA0_ADDR 0xB4004000
+#define AU1X00_MACDMA1_ADDR 0xB4004200
+#define AU1X00_UART0_ADDR 0xB1100000
+#define AU1X00_UART3_ADDR 0xB1400000
+#define AU1X00_SYS_ADDR 0xB1900000
+#define AU1X00_GPIO2_ADDR 0xB1700000
+#define AU1X00_IC0_ADDR 0xB0400000
+#define AU1X00_IC1_ADDR 0xB1800000
+
+/* Au1100 base addresses (in KSEG1 region) */
+#define AU1100_MAC0_ADDR 0xB0500000
+#define AU1100_MACEN_ADDR 0xB0520000
+
+/* Au1500 base addresses (in KSEG1 region) */
+#define AU1500_MAC0_ADDR 0xB1500000
+#define AU1500_MAC1_ADDR 0xB1510000
+#define AU1500_MACEN_ADDR 0xB1520000
+#define AU1500_PCI_ADDR 0xB4005000
+
+/* Au1x00 gpio2 register offsets
+ */
+#define gpio2_dir 0x0000
+#define gpio2_output 0x0008
+#define gpio2_pinstate 0x000c
+#define gpio2_inten 0x0010
+#define gpio2_enable 0x0014
+
+/* Au1x00 memory controller register offsets
+ */
+#define mem_sdmode0 0x0000
+#define mem_sdmode1 0x0004
+#define mem_sdmode2 0x0008
+#define mem_sdaddr0 0x000C
+#define mem_sdaddr1 0x0010
+#define mem_sdaddr2 0x0014
+#define mem_sdrefcfg 0x0018
+#define mem_sdprecmd 0x001C
+#define mem_sdautoref 0x0020
+#define mem_sdwrmd0 0x0024
+#define mem_sdwrmd1 0x0028
+#define mem_sdwrmd2 0x002C
+#define mem_sdsleep 0x0030
+#define mem_sdsmcke 0x0034
+
+#define mem_stcfg0 0x1000
+#define mem_sttime0 0x1004
+#define mem_staddr0 0x1008
+#define mem_stcfg1 0x1010
+#define mem_sttime1 0x1014
+#define mem_staddr1 0x1018
+#define mem_stcfg2 0x1020
+#define mem_sttime2 0x1024
+#define mem_staddr2 0x1028
+#define mem_stcfg3 0x1030
+#define mem_sttime3 0x1034
+#define mem_staddr3 0x1038
+
+/*
+ * Au1x00 peripheral register offsets
+ */
+#define ac97_enable 0x0010
+#define usbh_enable 0x0007FFFC
+#define usbd_enable 0x0058
+#define irda_enable 0x0040
+#define macen_mac0 0x0000
+#define macen_mac1 0x0004
+#define i2s_enable 0x0008
+#define uart_enable 0x0100
+#define ssi_enable 0x0100
+
+#define sys_scratch0 0x0018
+#define sys_scratch1 0x001c
+#define sys_cntctrl 0x0014
+#define sys_freqctrl0 0x0020
+#define sys_freqctrl1 0x0024
+#define sys_clksrc 0x0028
+#define sys_pinfunc 0x002C
+#define sys_powerctrl 0x003C
+#define sys_endian 0x0038
+#define sys_wakesrc 0x005C
+#define sys_cpupll 0x0060
+#define sys_auxpll 0x0064
+#define sys_pininputen 0x0110
+
+#define pci_cmem 0x0000
+#define pci_config 0x0004
+#define pci_b2bmask_cch 0x0008
+#define pci_b2bbase0_venid 0x000C
+#define pci_b2bbase1_id 0x0010
+#define pci_mwmask_dev 0x0014
+#define pci_mwbase_rev_ccl 0x0018
+#define pci_err_addr 0x001C
+#define pci_spec_intack 0x0020
+#define pci_id 0x0100
+#define pci_statcmd 0x0104
+#define pci_classrev 0x0108
+#define pci_hdrtype 0x010C
+#define pci_mbar 0x0110
+
+/*
+ * CSB250-specific values
+ */
+
+#define SYS_CPUPLL 33
+#define SYS_POWERCTRL 1
+#define SYS_AUXPLL 8
+#define SYS_CNTCTRL 256
+
+/* RCE0: */
+#define MEM_STCFG0 0x00000203
+#define MEM_STTIME0 0x22080b20
+#define MEM_STADDR0 0x11f03fc0
+
+/* RCE1: */
+#define MEM_STCFG1 0x00000203
+#define MEM_STTIME1 0x22080b20
+#define MEM_STADDR1 0x11e03fc0
+
+/* RCE2: */
+#define MEM_STCFG2 0x00000244
+#define MEM_STTIME2 0x22080a20
+#define MEM_STADDR2 0x11803f00
+
+/* RCE3: */
+#define MEM_STCFG3 0x00000201
+#define MEM_STTIME3 0x22080b20
+#define MEM_STADDR3 0x11003f00
+
+/*
+ * SDCS0 -
+ * SDCS1 -
+ * SDCS2 -
+ */
+#define MEM_SDMODE0 0x00552229
+#define MEM_SDMODE1 0x00552229
+#define MEM_SDMODE2 0x00552229
+
+#define MEM_SDADDR0 0x001003F8
+#define MEM_SDADDR1 0x001023F8
+#define MEM_SDADDR2 0x001043F8
+
+#define MEM_SDREFCFG_D 0x74000c30 /* disable */
+#define MEM_SDREFCFG_E 0x76000c30 /* enable */
+#define MEM_SDWRMD0 0x00000023
+#define MEM_SDWRMD1 0x00000023
+#define MEM_SDWRMD2 0x00000023
+
+#define MEM_1MS ((396000000/1000000) * 1000)
+
+#define AU1X00_IC_CFG0RD(x) (*(volatile uint32_t*)(x + 0x40))
+#define AU1X00_IC_CFG0SET(x) (*(volatile uint32_t*)(x + 0x40))
+#define AU1X00_IC_CFG0CLR(x) (*(volatile uint32_t*)(x + 0x44))
+#define AU1X00_IC_CFG1RD(x) (*(volatile uint32_t*)(x + 0x48))
+#define AU1X00_IC_CFG1SET(x) (*(volatile uint32_t*)(x + 0x48))
+#define AU1X00_IC_CFG1CLR(x) (*(volatile uint32_t*)(x + 0x4c))
+#define AU1X00_IC_CFG2RD(x) (*(volatile uint32_t*)(x + 0x50))
+#define AU1X00_IC_CFG2SET(x) (*(volatile uint32_t*)(x + 0x50))
+#define AU1X00_IC_CFG2CLR(x) (*(volatile uint32_t*)(x + 0x54))
+#define AU1X00_IC_REQ0INT(x) (*(volatile uint32_t*)(x + 0x54))
+#define AU1X00_IC_SRCRD(x) (*(volatile uint32_t*)(x + 0x58))
+#define AU1X00_IC_SRCSET(x) (*(volatile uint32_t*)(x + 0x58))
+#define AU1X00_IC_SRCCLR(x) (*(volatile uint32_t*)(x + 0x5c))
+#define AU1X00_IC_REQ1INT(x) (*(volatile uint32_t*)(x + 0x5c))
+#define AU1X00_IC_ASSIGNRD(x) (*(volatile uint32_t*)(x + 0x60))
+#define AU1X00_IC_ASSIGNSET(x) (*(volatile uint32_t*)(x + 0x60))
+#define AU1X00_IC_ASSIGNCLR(x) (*(volatile uint32_t*)(x + 0x64))
+#define AU1X00_IC_WAKERD(x) (*(volatile uint32_t*)(x + 0x68))
+#define AU1X00_IC_WAKESET(x) (*(volatile uint32_t*)(x + 0x68))
+#define AU1X00_IC_WAKECLR(x) (*(volatile uint32_t*)(x + 0x6c))
+#define AU1X00_IC_MASKRD(x) (*(volatile uint32_t*)(x + 0x70))
+#define AU1X00_IC_MASKSET(x) (*(volatile uint32_t*)(x + 0x70))
+#define AU1X00_IC_MASKCLR(x) (*(volatile uint32_t*)(x + 0x74))
+#define AU1X00_IC_RISINGRD(x) (*(volatile uint32_t*)(x + 0x78))
+#define AU1X00_IC_RISINGCLR(x) (*(volatile uint32_t*)(x + 0x78))
+#define AU1X00_IC_FALLINGRD(x) (*(volatile uint32_t*)(x + 0x7c))
+#define AU1X00_IC_FALLINGCLR(x) (*(volatile uint32_t*)(x + 0x7c))
+#define AU1X00_IC_TESTBIT(x) (*(volatile uint32_t*)(x + 0x80))
+#define AU1X00_IC_IRQ_MAC0 (bit(28))
+#define AU1X00_IC_IRQ_MAC1 (bit(29))
+#define AU1X00_IC_IRQ_TOY_MATCH0 (bit(15))
+#define AU1X00_IC_IRQ_TOY_MATCH1 (bit(16))
+#define AU1X00_IC_IRQ_TOY_MATCH2 (bit(17))
+
+
+
+#define AU1X00_SYS_TOYTRIM(x) (*(volatile uint32_t*)(x + 0x00))
+#define AU1X00_SYS_TOYWRITE(x) (*(volatile uint32_t*)(x + 0x04))
+#define AU1X00_SYS_TOYMATCH0(x) (*(volatile uint32_t*)(x + 0x08))
+#define AU1X00_SYS_TOYMATCH1(x) (*(volatile uint32_t*)(x + 0x0c))
+#define AU1X00_SYS_TOYMATCH2(x) (*(volatile uint32_t*)(x + 0x10))
+#define AU1X00_SYS_CNTCTRL(x) (*(volatile uint32_t*)(x + 0x14))
+#define AU1X00_SYS_SCRATCH0(x) (*(volatile uint32_t*)(x + 0x18))
+#define AU1X00_SYS_SCRATCH1(x) (*(volatile uint32_t*)(x + 0x1c))
+#define AU1X00_SYS_WAKEMSK(x) (*(volatile uint32_t*)(x + 0x34))
+#define AU1X00_SYS_ENDIAN(x) (*(volatile uint32_t*)(x + 0x38))
+#define AU1X00_SYS_POWERCTRL(x) (*(volatile uint32_t*)(x + 0x3c))
+#define AU1X00_SYS_TOYREAD(x) (*(volatile uint32_t*)(x + 0x40))
+#define AU1X00_SYS_RTCTRIM(x) (*(volatile uint32_t*)(x + 0x44))
+#define AU1X00_SYS_RTCWRITE(x) (*(volatile uint32_t*)(x + 0x48))
+#define AU1X00_SYS_RTCMATCH0(x) (*(volatile uint32_t*)(x + 0x4c))
+#define AU1X00_SYS_RTCMATCH1(x) (*(volatile uint32_t*)(x + 0x50))
+#define AU1X00_SYS_RTCMATCH2(x) (*(volatile uint32_t*)(x + 0x54))
+#define AU1X00_SYS_RTCREAD(x) (*(volatile uint32_t*)(x + 0x58))
+#define AU1X00_SYS_WAKESRC(x) (*(volatile uint32_t*)(x + 0x5c))
+#define AU1X00_SYS_SLPPWR(x) (*(volatile uint32_t*)(x + 0x78))
+#define AU1X00_SYS_SLEEP(x) (*(volatile uint32_t*)(x + 0x7c))
+
+#define AU1X00_SYS_CNTCTRL_ERS (bit(23))
+#define AU1X00_SYS_CNTCTRL_RTS (bit(20))
+#define AU1X00_SYS_CNTCTRL_RM2 (bit(19))
+#define AU1X00_SYS_CNTCTRL_RM1 (bit(18))
+#define AU1X00_SYS_CNTCTRL_RM0 (bit(17))
+#define AU1X00_SYS_CNTCTRL_RS (bit(16))
+#define AU1X00_SYS_CNTCTRL_BP (bit(14))
+#define AU1X00_SYS_CNTCTRL_REN (bit(13))
+#define AU1X00_SYS_CNTCTRL_BRT (bit(12))
+#define AU1X00_SYS_CNTCTRL_TEN (bit(11))
+#define AU1X00_SYS_CNTCTRL_BTT (bit(10))
+#define AU1X00_SYS_CNTCTRL_E0 (bit(8))
+#define AU1X00_SYS_CNTCTRL_ETS (bit(7))
+#define AU1X00_SYS_CNTCTRL_32S (bit(5))
+#define AU1X00_SYS_CNTCTRL_TTS (bit(4))
+#define AU1X00_SYS_CNTCTRL_TM2 (bit(3))
+#define AU1X00_SYS_CNTCTRL_TM1 (bit(2))
+#define AU1X00_SYS_CNTCTRL_TM0 (bit(1))
+#define AU1X00_SYS_CNTCTRL_TS (bit(0))
+#define AU1X00_SYS_WAKEMSK_M20 (bit(8))
+
+#define AU1X00_MAC_CONTROL(x) (*(volatile uint32_t*)(x + 0x00))
+#define AU1X00_MAC_ADDRHIGH(x) (*(volatile uint32_t*)(x + 0x04))
+#define AU1X00_MAC_ADDRLOW(x) (*(volatile uint32_t*)(x + 0x08))
+#define AU1X00_MAC_HASHHIGH(x) (*(volatile uint32_t*)(x + 0x0c))
+#define AU1X00_MAC_HASHLOW(x) (*(volatile uint32_t*)(x + 0x10))
+#define AU1X00_MAC_MIICTRL(x) (*(volatile uint32_t*)(x + 0x14))
+#define AU1X00_MAC_MIIDATA(x) (*(volatile uint32_t*)(x + 0x18))
+#define AU1X00_MAC_FLOWCTRL(x) (*(volatile uint32_t*)(x + 0x1c))
+#define AU1X00_MAC_VLAN1(x) (*(volatile uint32_t*)(x + 0x20))
+#define AU1X00_MAC_VLAN2(x) (*(volatile uint32_t*)(x + 0x24))
+#define AU1X00_MAC_EN0 (*(volatile uint32_t*)(AU1X00_MACEN_ADDR + 0x0))
+#define AU1X00_MAC_EN1 (*(volatile uint32_t*)(AU1X00_MACEN_ADDR + 0x4))
+#define AU1X00_MAC_DMA_TX0_ADDR(x) (*(volatile uint32_t*)(x + 0x000))
+#define AU1X00_MAC_DMA_TX1_ADDR(x) (*(volatile uint32_t*)(x + 0x010))
+#define AU1X00_MAC_DMA_TX2_ADDR(x) (*(volatile uint32_t*)(x + 0x020))
+#define AU1X00_MAC_DMA_TX3_ADDR(x) (*(volatile uint32_t*)(x + 0x030))
+#define AU1X00_MAC_DMA_RX0_ADDR(x) (*(volatile uint32_t*)(x + 0x100))
+#define AU1X00_MAC_DMA_RX1_ADDR(x) (*(volatile uint32_t*)(x + 0x110))
+#define AU1X00_MAC_DMA_RX2_ADDR(x) (*(volatile uint32_t*)(x + 0x120))
+#define AU1X00_MAC_DMA_RX3_ADDR(x) (*(volatile uint32_t*)(x + 0x130))
+
+typedef struct {
+ volatile uint32_t stat;
+ volatile uint32_t addr;
+ uint32_t _rsv0;
+ uint32_t _rsv1;
+} au1x00_macdma_rx_t;
+
+
+typedef struct {
+ volatile uint32_t stat;
+ volatile uint32_t addr;
+ volatile uint32_t len;
+ uint32_t _rsv0;
+} au1x00_macdma_tx_t;
+
+#define AU1X00_MAC_CTRL_RA (bit(31))
+#define AU1X00_MAC_CTRL_EM (bit(30))
+#define AU1X00_MAC_CTRL_DO (bit(23))
+#define AU1X00_MAC_CTRL_LM(x) ((x) << 21)
+#define AU1X00_MAC_CTRL_LM_NORMAL ((0) << 21)
+#define AU1X00_MAC_CTRL_LM_INTERNAL ((1) << 21)
+#define AU1X00_MAC_CTRL_LM_EXTERNAL ((2) << 21)
+#define AU1X00_MAC_CTRL_F (bit(20))
+#define AU1X00_MAC_CTRL_PM (bit(19))
+#define AU1X00_MAC_CTRL_PR (bit(18))
+#define AU1X00_MAC_CTRL_IF (bit(17))
+#define AU1X00_MAC_CTRL_PB (bit(16))
+#define AU1X00_MAC_CTRL_HO (bit(15))
+#define AU1X00_MAC_CTRL_HP (bit(13))
+#define AU1X00_MAC_CTRL_LC (bit(12))
+#define AU1X00_MAC_CTRL_DB (bit(11))
+#define AU1X00_MAC_CTRL_DR (bit(10))
+#define AU1X00_MAC_CTRL_AP (bit(8))
+#define AU1X00_MAC_CTRL_BL(x) ((x) << 6)
+#define AU1X00_MAC_CTRL_DC (bit(5))
+#define AU1X00_MAC_CTRL_TE (bit(3))
+#define AU1X00_MAC_CTRL_RE (bit(2))
+
+#define AU1X00_MAC_EN_JP (bit(6))
+#define AU1X00_MAC_EN_E2 (bit(5))
+#define AU1X00_MAC_EN_E1 (bit(4))
+#define AU1X00_MAC_EN_C (bit(3))
+#define AU1X00_MAC_EN_TS (bit(2))
+#define AU1X00_MAC_EN_E0 (bit(1))
+#define AU1X00_MAC_EN_CE (bit(0))
+
+#define AU1X00_MAC_ADDRHIGH_MASK (0xffff)_
+#define AU1X00_MAC_MIICTRL_PHYADDR(x) ((x & 0x1f) << 11)
+#define AU1X00_MAC_MIICTRL_MIIREG(x) ((x & 0x1f) << 6)
+#define AU1X00_MAC_MIICTRL_MW (bit(1))
+#define AU1X00_MAC_MIICTRL_MB (bit(0))
+#define AU1X00_MAC_MIIDATA_MASK (0xffff)
+#define AU1X00_MAC_FLOWCTRL_PT(x) (((x) & 0xffff) << 16)
+#define AU1X00_MAC_FLOWCTRL_PC (bit(2))
+#define AU1X00_MAC_FLOWCTRL_FE (bit(1))
+#define AU1X00_MAC_FLOWCTRL_FB (bit(0))
+
+#define AU1X00_MAC_DMA_RXSTAT_MI (bit(31))
+#define AU1X00_MAC_DMA_RXSTAT_PF (bit(30))
+#define AU1X00_MAC_DMA_RXSTAT_FF (bit(29))
+#define AU1X00_MAC_DMA_RXSTAT_BF (bit(28))
+#define AU1X00_MAC_DMA_RXSTAT_MF (bit(27))
+#define AU1X00_MAC_DMA_RXSTAT_UC (bit(26))
+#define AU1X00_MAC_DMA_RXSTAT_CF (bit(25))
+#define AU1X00_MAC_DMA_RXSTAT_LE (bit(24))
+#define AU1X00_MAC_DMA_RXSTAT_V2 (bit(23))
+#define AU1X00_MAC_DMA_RXSTAT_V1 (bit(22))
+#define AU1X00_MAC_DMA_RXSTAT_CR (bit(21))
+#define AU1X00_MAC_DMA_RXSTAT_DB (bit(20))
+#define AU1X00_MAC_DMA_RXSTAT_ME (bit(19))
+#define AU1X00_MAC_DMA_RXSTAT_FT (bit(18))
+#define AU1X00_MAC_DMA_RXSTAT_CS (bit(17))
+#define AU1X00_MAC_DMA_RXSTAT_FL (bit(16))
+#define AU1X00_MAC_DMA_RXSTAT_RF (bit(15))
+#define AU1X00_MAC_DMA_RXSTAT_WT (bit(14))
+#define AU1X00_MAC_DMA_RXSTAT_LEN(x) ((x) & 0x3fff)
+#define AU1X00_MAC_DMA_RXADDR_ADDR(x) ((x) & ~0x1f)
+#define AU1X00_MAC_DMA_RXADDR_CB_MASK (0x3 << 0x2)
+#define AU1X00_MAC_DMA_RXADDR_DN (bit(1))
+#define AU1X00_MAC_DMA_RXADDR_EN (bit(0))
+
+
+#define AU1X00_MAC_DMA_TXSTAT_PR (bit(31))
+#define AU1X00_MAC_DMA_TXSTAT_CC_MASK (0xf << 10)
+#define AU1X00_MAC_DMA_TXSTAT_LO (bit(9))
+#define AU1X00_MAC_DMA_TXSTAT_DF (bit(8))
+#define AU1X00_MAC_DMA_TXSTAT_UR (bit(7))
+#define AU1X00_MAC_DMA_TXSTAT_EC (bit(6))
+#define AU1X00_MAC_DMA_TXSTAT_LC (bit(5))
+#define AU1X00_MAC_DMA_TXSTAT_ED (bit(4))
+#define AU1X00_MAC_DMA_TXSTAT_LS (bit(3))
+#define AU1X00_MAC_DMA_TXSTAT_NC (bit(2))
+#define AU1X00_MAC_DMA_TXSTAT_JT (bit(1))
+#define AU1X00_MAC_DMA_TXSTAT_FA (bit(0))
+#define AU1X00_MAC_DMA_TXADDR_ADDR(x) ((x) & ~0x1f)
+#define AU1X00_MAC_DMA_TXADDR_CB_MASK (0x3 << 0x2)
+#define AU1X00_MAC_DMA_TXADDR_DN (bit(1))
+#define AU1X00_MAC_DMA_TXADDR_EN (bit(0))
+
+
+
+typedef struct {
+ volatile uint32_t rxdata;
+ volatile uint32_t txdata;
+ volatile uint32_t inten;
+ volatile uint32_t intcause;
+ volatile uint32_t fifoctrl;
+ volatile uint32_t linectrl;
+ volatile uint32_t mdmctrl;
+ volatile uint32_t linestat;
+ volatile uint32_t mdmstat;
+ volatile uint32_t clkdiv;
+ volatile uint32_t _resv[54];
+ volatile uint32_t enable;
+} au1x00_uart_t;
+
+extern au1x00_uart_t *uart0;
+extern au1x00_uart_t *uart3;
+
+void static inline au_sync(void)
+{
+ __asm__ volatile ("sync");
+}
+
+
+extern void mips_default_isr( int vector );
+
+/* Generate a software interrupt */
+extern int assert_sw_irq(uint32_t irqnum);
+
+/* Clear a software interrupt */
+extern int negate_sw_irq(uint32_t irqnum);
+
+#endif