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-rwxr-xr-xsw/test-adder/Makefile11
-rwxr-xr-xsw/test-adder/novena-eim.c406
-rwxr-xr-xsw/test-adder/novena-eim.h297
-rwxr-xr-xsw/test-adder/test-adder.c206
4 files changed, 920 insertions, 0 deletions
diff --git a/sw/test-adder/Makefile b/sw/test-adder/Makefile
new file mode 100755
index 0000000..5271b70
--- /dev/null
+++ b/sw/test-adder/Makefile
@@ -0,0 +1,11 @@
+all: test-adder
+
+test-adder : test-adder.o novena-eim.o
+ gcc -o test-adder test-adder.o novena-eim.o
+
+test-adder.o: test-adder.c novena-eim.h novena-eim.c
+ gcc -c test-adder.c
+ gcc -c novena-eim.c
+
+clean:
+ rm -f *.o test-adder
diff --git a/sw/test-adder/novena-eim.c b/sw/test-adder/novena-eim.c
new file mode 100755
index 0000000..9ea76ef
--- /dev/null
+++ b/sw/test-adder/novena-eim.c
@@ -0,0 +1,406 @@
+//------------------------------------------------------------------------------
+// novena-eim.c
+//------------------------------------------------------------------------------
+
+
+//------------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include "novena-eim.h"
+
+
+//------------------------------------------------------------------------------
+// Variables
+//------------------------------------------------------------------------------
+static long mem_page_size = 0;
+static int mem_dev_fd = -1;
+static void * mem_map_ptr = MAP_FAILED;
+static off_t mem_base_addr = 0;
+
+
+//------------------------------------------------------------------------------
+int eim_setup()
+//------------------------------------------------------------------------------
+{
+ // register cleanup function
+ int ok = atexit(_eim_cleanup);
+ if (ok != 0)
+ { printf("ERROR: atexit() failed.\n");
+ return -1;
+ }
+
+ // determine memory page size to use in mmap()
+ mem_page_size = sysconf(_SC_PAGESIZE);
+ if (mem_page_size < 1)
+ { printf("ERROR: sysconf(_SC_PAGESIZE) == %l\n", mem_page_size);
+ return -1;
+ }
+
+ // try to open memory device
+ mem_dev_fd = open(MEMORY_DEVICE, O_RDWR | O_SYNC);
+ if (mem_dev_fd == -1)
+ { printf("ERROR: open(%s) failed.\n", MEMORY_DEVICE);
+ return -1;
+ }
+
+ /* Several blocks in the CPU have common pins, we can use I/O MUX Controller
+ * to configure what block will actually use I/O pins. We wait EIM module to be able
+ * to communicate with the on-board FPGA. Let's configure IOMUXC accordingly.
+ */
+ _eim_setup_iomuxc();
+
+ /* We need to enable clocking of EIM block in order to be able to use it.
+ * Let's configure Clock Controller Module accordingly.
+ */
+ _eim_setup_ccm();
+
+ /* We need to properly configure EIM mode and all the corresponding parameters.
+ * That's a lot of code, let's do it now.
+ */
+ _eim_setup_eim();
+
+
+ // done
+ return 1;
+}
+
+
+//------------------------------------------------------------------------------
+void _eim_cleanup()
+//------------------------------------------------------------------------------
+{
+ // unmap memory if needed
+ if (mem_map_ptr != MAP_FAILED)
+ { int ok = munmap(mem_map_ptr, mem_page_size);
+ if (ok != 0) printf("WARNING: munmap() failed.\n");
+ }
+
+ // close memory device if needed
+ if (mem_dev_fd != -1)
+ { int ok = close(mem_dev_fd);
+ if (ok != 0) printf("WARNING: close() failed.\n");
+ }
+}
+
+
+//------------------------------------------------------------------------------
+void _eim_setup_iomuxc()
+//------------------------------------------------------------------------------
+{
+ // create structures
+ struct IOMUXC_SW_MUX_CTL_PAD_EIM reg_mux; // mux control register
+ struct IOMUXC_SW_PAD_CTL_PAD_EIM reg_pad; // pad control register
+
+ // setup mux control register
+ reg_mux.mux_mode = IOMUXC_MUX_MODE_ALT0; // ALT0 mode must be used for EIM
+ reg_mux.sion = 0; // forced input not needed
+ reg_mux.reserved_3 = 0; // must be 0
+ reg_mux.reserved_31_5 = 0; // must be 0
+
+ // setup pad control register
+ reg_pad.sre = IOMUXC_PAD_CTL_SRE_FAST; // fast slew rate
+ reg_pad.dse = IOMUXC_PAD_CTL_DSE_33_OHM; // highest drive strength
+ reg_pad.speed = IOMUXC_PAD_CTL_SPEED_MEDIUM_10; // medium speed
+ reg_pad.ode = IOMUXC_PAD_CTL_ODE_DISABLED; // open drain not needed
+ reg_pad.pke = IOMUXC_PAD_CTL_PKE_DISABLED; // neither pull nor keeper are needed
+ reg_pad.pue = IOMUXC_PAD_CTL_PUE_PULL; // doesn't matter actually, because PKE is disabled
+ reg_pad.pus = IOMUXC_PAD_CTL_PUS_100K_OHM_PU; // doesn't matter actually, because PKE is disabled
+ reg_pad.hys = IOMUXC_PAD_CTL_HYS_DISABLED; // use CMOS, not Schmitt trigger input
+ reg_pad.reserved_2_1 = 0; // must be 0
+ reg_pad.reserved_10_8 = 0; // must be 0
+ reg_pad.reserved_31_17 = 0; // must be 0
+
+ // all the pins must be configured to use the same ALT0 mode
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_CS0_B, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_OE_B, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_RW, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_LBA_B, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD00, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD01, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD02, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD03, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD04, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD05, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD06, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD07, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD08, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD09, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD10, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD11, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD12, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD13, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD14, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD15, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_WAIT_B, (unsigned int *)&reg_mux);
+ eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_BCLK, (unsigned int *)&reg_mux);
+
+ // we need to configure all the I/O pads too
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_CS0_B, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_OE_B, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_RW, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_LBA_B, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD00, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD01, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD02, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD03, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD04, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD05, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD06, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD07, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD08, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD09, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD10, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD11, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD12, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD13, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD14, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD15, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_WAIT_B, (unsigned int *)&reg_pad);
+ eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_BCLK, (unsigned int *)&reg_pad);
+}
+
+
+//------------------------------------------------------------------------------
+void _eim_setup_ccm()
+//------------------------------------------------------------------------------
+{
+ // create structure
+ struct CCM_CCGR6 ccm_ccgr6;
+
+ // read register
+ eim_read_32(CCM_CCGR6, (unsigned int *)&ccm_ccgr6);
+
+ // modify register
+ ccm_ccgr6.cg0_usboh3 = CCM_CGR_ON_EXCEPT_STOP;
+ ccm_ccgr6.cg1_usdhc1 = CCM_CGR_OFF;
+ ccm_ccgr6.cg2_usdhc2 = CCM_CGR_ON_EXCEPT_STOP;
+ ccm_ccgr6.cg3_usdhc3 = CCM_CGR_ON_EXCEPT_STOP;
+
+ ccm_ccgr6.cg3_usdhc4 = CCM_CGR_OFF;
+ ccm_ccgr6.cg5_eim_slow = CCM_CGR_ON_EXCEPT_STOP;
+ ccm_ccgr6.cg6_vdoaxiclk = CCM_CGR_OFF;
+ ccm_ccgr6.cg7_vpu = CCM_CGR_OFF;
+
+ ccm_ccgr6.cg8_reserved = 0;
+ ccm_ccgr6.cg9_reserved = 0;
+ ccm_ccgr6.cg10_reserved = 0;
+ ccm_ccgr6.cg11_reserved = 0;
+ ccm_ccgr6.cg12_reserved = 0;
+ ccm_ccgr6.cg13_reserved = 0;
+ ccm_ccgr6.cg14_reserved = 0;
+ ccm_ccgr6.cg15_reserved = 0;
+
+ // write register
+ eim_write_32(CCM_CCGR6, (unsigned int *)&ccm_ccgr6);
+}
+
+
+//------------------------------------------------------------------------------
+void _eim_setup_eim()
+//------------------------------------------------------------------------------
+{
+ // create structures
+ struct EIM_CS_GCR1 gcr1;
+ struct EIM_CS_GCR2 gcr2;
+ struct EIM_CS_RCR1 rcr1;
+ struct EIM_CS_RCR2 rcr2;
+ struct EIM_CS_WCR1 wcr1;
+ struct EIM_CS_WCR2 wcr2;
+
+ struct EIM_WCR wcr;
+ struct EIM_WIAR wiar;
+ struct EIM_EAR ear;
+
+ // read all the registers
+ eim_read_32(EIM_CS0GCR1, (unsigned int *)&gcr1);
+ eim_read_32(EIM_CS0GCR2, (unsigned int *)&gcr2);
+ eim_read_32(EIM_CS0RCR1, (unsigned int *)&rcr1);
+ eim_read_32(EIM_CS0RCR2, (unsigned int *)&rcr2);
+ eim_read_32(EIM_CS0WCR1, (unsigned int *)&wcr1);
+ eim_read_32(EIM_CS0WCR2, (unsigned int *)&wcr2);
+
+ eim_read_32(EIM_WCR, (unsigned int *)&wcr);
+ eim_read_32(EIM_WIAR, (unsigned int *)&wiar);
+ eim_read_32(EIM_EAR, (unsigned int *)&ear);
+
+ // manipulate registers as needed
+ gcr1.csen = 1; // chip select is enabled |
+ gcr1.swr = 1; // write is sync |
+ gcr1.srd = 1; // read is sync |
+ gcr1.mum = 1; // address and data are multiplexed |
+ gcr1.wfl = 0; // write latency is not fixed |
+ gcr1.rfl = 0; // read latency is not fixed |
+ gcr1.cre = 0; // CRE signal not needed |
+ //gcr1.crep = x; // don't care, CRE not used |
+ gcr1.bl = 4; // burst length | ?
+ gcr1.wc = 0; // write is not continuous | ?
+ gcr1.bcd = 3; // BCLK divisor is 3+1=4 |
+ gcr1.bcs = 1; // delay from ~CS to BCLK is 1 cycle |
+ gcr1.dsz = 1; // 16 bits per databeat at DATA[15:0] |
+ gcr1.sp = 0; // supervisor protection is disabled |
+ gcr1.csrec = 1; // ~CS recovery is 1 cycle |
+ gcr1.aus = 1; // address is not shifted |
+ gcr1.gbc = 1; // ~CS gap is 1 cycle |
+ gcr1.wp = 0; // write protection is not enabled |
+ //gcr1.psz = x; // don't care, page mode is not used |
+
+ gcr2.adh = 0; // address hold duration is 1 cycle |
+ //gcr2.daps = x; // don't care, DTACK is not used |
+ gcr2.dae = 0; // DTACK is not used |
+ //gcr2.dap = x; // don't care, DTACK is not used |
+ gcr2.mux16_byp_grant = 1; // enable grant mechanism | ?
+ gcr2.reserved_3_2 = 0; // must be 0 |
+ gcr2.reserved_11_10 = 0; // must be 0 |
+ gcr2.reserved_31_13 = 0; // must be 0 |
+
+ //rcr1.rcsn = x; // don't care in sync mode |
+ rcr1.rcsa = 0; // no delay for ~CS needed |
+ //rcr1.oen = x; // don't care in sync mode |
+ rcr1.oea = 0; // no delay for ~OE needed |
+ rcr1.radvn = 0; // no delay for ~LBA needed |
+ rcr1.ral = 0; // clear ~LBA when needed |
+ rcr1.radva = 0; // no delay for ~LBA needed |
+ rcr1.rwsc = 1; // one wait state |
+ rcr1.reserved_3 = 0; // must be 0 |
+ rcr1.reserved_7 = 0; // must be 0 |
+ rcr1.reserved_11 = 0; // must be 0 |
+ rcr1.reserved_15 = 0; // must be 0 |
+ rcr1.reserved_23 = 0; // must be 0 |
+ rcr1.reserved_31_30 = 0; // must be 0 |
+
+ //rcr2.rben = x; // don't care in sync mode |
+ rcr2.rbe = 0; // BE is disabled |
+ //rcr2.rbea = x; // don't care when BE is not used |
+ rcr2.rl = 0; // read latency is 0 | ?
+ //rcr2.pat = x; // don't care when page read is not used |
+ rcr2.apr = 0; // page read mode is not used |
+ rcr2.reserved_7 = 0; // must be 0 |
+ rcr2.reserved_11_10 = 0; // must be 0 |
+ rcr2.reserved_31_16 = 0; // must be 0 |
+
+ //wcr1.wcsn = x; // don't care in sync mode |
+ wcr1.wcsa = 0; // no delay for ~CS needed |
+ //wcr1.wen = x; // don't care in sync mode |
+ wcr1.wea = 0; // no delay for ~WR_N needed |
+ //wcr1.wben = x; // don't care in sync mode |
+ //wcr1.wbea = x; // don't care in sync mode |
+ wcr1.wadvn = 0; // no delay for ~LBA needed |
+ wcr1.wadva = 0; // no delay for ~LBA needed |
+ wcr1.wwsc = 1; // no wait state in needed |
+ wcr1.wbed = 1; // BE is disabled |
+ wcr1.wal = 0; // clear ~LBA when needed |
+
+ wcr2.wbcdd = 0; // write clock division is not needed |
+ wcr2.reserved_31_1 = 0; // must be 0 |
+
+ wcr.bcm = 0; // clock is only active during access |
+ //wcr.gbcd = x; // don't care when BCM=0 |
+ wcr.inten = 0; // interrupt is not used |
+ //wcr.intpol = x; // don't care when interrupt is not used |
+ wcr.wdog_en = 1; // watchdog is enabled |
+ wcr.wdog_limit = 00; // timeout is 128 BCLK cycles |
+ wcr.reserved_3 = 0; // must be 0 |
+ wcr.reserved_7_6 = 0; // must be 0 |
+ wcr.reserved_31_11 = 0; // must be 0 |
+
+ wiar.ips_req = 0; // IPS not needed |
+ wiar.ips_ack = 0; // IPS not needed |
+ //wiar.irq = x; // don't touch |
+ //wiar.errst = x; // don't touch |
+ wiar.aclk_en = 1; // clock is enabled |
+ wiar.reserved_31_5 = 0; // must be 0 |
+
+ //ear.error_addr = x; // read-only |
+
+ // write modified registers
+ eim_write_32(EIM_CS0GCR1, (unsigned int *)&gcr1);
+ eim_write_32(EIM_CS0GCR2, (unsigned int *)&gcr2);
+ eim_write_32(EIM_CS0RCR1, (unsigned int *)&rcr1);
+ eim_write_32(EIM_CS0RCR2, (unsigned int *)&rcr2);
+ eim_write_32(EIM_CS0WCR1, (unsigned int *)&wcr1);
+ eim_write_32(EIM_CS0WCR2, (unsigned int *)&wcr2);
+ eim_write_32(EIM_WCR, (unsigned int *)&wcr);
+ eim_write_32(EIM_WIAR, (unsigned int *)&wiar);/*
+ eim_write_32(EIM_EAR, (unsigned int *)&ear);*/
+}
+
+
+//------------------------------------------------------------------------------
+void eim_write_32(off_t offset, unsigned int *pvalue)
+//------------------------------------------------------------------------------
+{
+ // calculate memory offset
+ unsigned int *ptr = (unsigned int *)_eim_calc_offset(offset);
+
+ // write data to memory
+ memcpy(ptr, pvalue, sizeof(unsigned int));
+}
+
+//------------------------------------------------------------------------------
+void eim_read_32(off_t offset, unsigned int *pvalue)
+//------------------------------------------------------------------------------
+{
+ // calculate memory offset
+ unsigned int *ptr = (unsigned int *)_eim_calc_offset(offset);
+
+ // read data from memory
+ memcpy(pvalue, ptr, sizeof(unsigned int));
+}
+
+
+//------------------------------------------------------------------------------
+off_t _eim_calc_offset(off_t offset)
+//------------------------------------------------------------------------------
+{
+ // make sure that memory is mapped
+ if (mem_map_ptr == MAP_FAILED) _eim_remap_mem(offset);
+
+ // calculate starting and ending addresses of currently mapped page
+ off_t offset_low = mem_base_addr;
+ off_t offset_high = mem_base_addr + (mem_page_size - 1);
+
+ // check that offset is in currently mapped page, remap new page otherwise
+ if ((offset < offset_low) || (offset > offset_high)) _eim_remap_mem(offset);
+
+ // calculate pointer
+ return (off_t)mem_map_ptr + (offset - mem_base_addr);
+}
+
+
+//------------------------------------------------------------------------------
+void _eim_remap_mem(off_t offset)
+//------------------------------------------------------------------------------
+{
+ // unmap old memory page if needed
+ if (mem_map_ptr != MAP_FAILED)
+ { int ok = munmap(mem_map_ptr, mem_page_size);
+ if (ok != 0)
+ { printf("ERROR: munmap() failed.\n");
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ // calculate starting address of new page
+ while (offset % mem_page_size) offset--;
+
+ // try to map new memory page
+ mem_map_ptr = mmap(NULL, mem_page_size, PROT_READ | PROT_WRITE, MAP_SHARED, mem_dev_fd, offset);
+ if (mem_map_ptr == MAP_FAILED)
+ { printf("ERROR: mmap() failed.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ // save last mapped page address
+ mem_base_addr = offset;
+}
+
+
+//------------------------------------------------------------------------------
+// End-of-File
+//------------------------------------------------------------------------------
diff --git a/sw/test-adder/novena-eim.h b/sw/test-adder/novena-eim.h
new file mode 100755
index 0000000..fdcf5a5
--- /dev/null
+++ b/sw/test-adder/novena-eim.h
@@ -0,0 +1,297 @@
+//------------------------------------------------------------------------------
+// novena-eim.h
+//------------------------------------------------------------------------------
+
+
+//------------------------------------------------------------------------------
+// Defined Values
+//------------------------------------------------------------------------------
+#define MEMORY_DEVICE "/dev/mem"
+
+
+//------------------------------------------------------------------------------
+// IOMUXC Values
+//------------------------------------------------------------------------------
+#define IOMUXC_MUX_MODE_ALT0 0 // 000
+
+#define IOMUXC_PAD_CTL_SRE_FAST 1 // 1
+#define IOMUXC_PAD_CTL_DSE_33_OHM 7 // 111
+#define IOMUXC_PAD_CTL_SPEED_MEDIUM_10 2 // 10
+#define IOMUXC_PAD_CTL_ODE_DISABLED 0 // 0
+#define IOMUXC_PAD_CTL_PKE_DISABLED 0 // 0
+#define IOMUXC_PAD_CTL_PUE_PULL 1 // 1
+#define IOMUXC_PAD_CTL_PUS_100K_OHM_PU 2 // 10
+#define IOMUXC_PAD_CTL_HYS_DISABLED 0 // 0
+
+//------------------------------------------------------------------------------
+// CCM Values
+//------------------------------------------------------------------------------
+#define CCM_CGR_OFF 0 // 00
+#define CCM_CGR_ON_EXCEPT_STOP 3 // 11
+
+
+//------------------------------------------------------------------------------
+// CPU Registers
+//------------------------------------------------------------------------------
+enum IMX6DQ_REGISTER_OFFSET
+{
+ IOMUXC_SW_MUX_CTL_PAD_EIM_CS0_B = 0x020E00F8,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_OE_B = 0x020E0100,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_RW = 0x020E0104,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_LBA_B = 0x020E0108,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD00 = 0x020E0114,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD01 = 0x020E0118,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD02 = 0x020E011C,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD03 = 0x020E0120,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD04 = 0x020E0124,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD05 = 0x020E0128,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD06 = 0x020E012C,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD07 = 0x020E0130,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD08 = 0x020E0134,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD09 = 0x020E0138,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD10 = 0x020E013C,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD11 = 0x020E0140,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD12 = 0x020E0144,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD13 = 0x020E0148,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD14 = 0x020E014C,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_AD15 = 0x020E0150,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_WAIT_B = 0x020E0154,
+ IOMUXC_SW_MUX_CTL_PAD_EIM_BCLK = 0x020E0158,
+
+ IOMUXC_SW_PAD_CTL_PAD_EIM_CS0_B = 0x020E040C,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_OE_B = 0x020E0414,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_RW = 0x020E0418,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_LBA_B = 0x020E041C,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD00 = 0x020E0428,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD01 = 0x020E042C,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD02 = 0x020E0430,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD03 = 0x020E0434,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD04 = 0x020E0438,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD05 = 0x020E043C,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD06 = 0x020E0440,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD07 = 0x020E0444,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD08 = 0x020E0448,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD09 = 0x020E044C,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD10 = 0x020E0450,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD11 = 0x020E0454,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD12 = 0x020E0458,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD13 = 0x020E045C,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD14 = 0x020E0460,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_AD15 = 0x020E0464,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_WAIT_B = 0x020E0468,
+ IOMUXC_SW_PAD_CTL_PAD_EIM_BCLK = 0x020E046C,
+
+ CCM_CCGR6 = 0x020C4080,
+
+ EIM_CS0GCR1 = 0x021B8000,
+ EIM_CS0GCR2 = 0x021B8004,
+ EIM_CS0RCR1 = 0x021B8008,
+ EIM_CS0RCR2 = 0x021B800C,
+ EIM_CS0WCR1 = 0x021B8010,
+ EIM_CS0WCR2 = 0x021B8014,
+
+ EIM_WCR = 0x021B8090,
+ EIM_WIAR = 0x021B8094,
+ EIM_EAR = 0x021B8098,
+
+ EIM_BASE_ADDR = 0x08000000
+};
+
+
+//------------------------------------------------------------------------------
+struct IOMUXC_SW_MUX_CTL_PAD_EIM
+//------------------------------------------------------------------------------
+{
+ unsigned int mux_mode : 3;
+ unsigned int reserved_3 : 1;
+ unsigned int sion : 1;
+ unsigned int reserved_31_5 : 27;
+};
+//------------------------------------------------------------------------------
+struct IOMUXC_SW_PAD_CTL_PAD_EIM
+//------------------------------------------------------------------------------
+{
+ unsigned int sre : 1;
+ unsigned int reserved_2_1 : 2;
+ unsigned int dse : 3;
+ unsigned int speed : 2;
+ unsigned int reserved_10_8 : 3;
+ unsigned int ode : 1;
+ unsigned int pke : 1;
+ unsigned int pue : 1;
+ unsigned int pus : 2;
+ unsigned int hys : 1;
+ unsigned int reserved_31_17 : 15;
+};
+
+
+//------------------------------------------------------------------------------
+struct CCM_CCGR6
+//------------------------------------------------------------------------------
+{
+ unsigned int cg0_usboh3 : 2;
+ unsigned int cg1_usdhc1 : 2;
+ unsigned int cg2_usdhc2 : 2;
+ unsigned int cg3_usdhc3 : 2;
+
+ unsigned int cg3_usdhc4 : 2;
+ unsigned int cg5_eim_slow : 2;
+ unsigned int cg6_vdoaxiclk : 2;
+ unsigned int cg7_vpu : 2;
+
+ unsigned int cg8_reserved : 2;
+ unsigned int cg9_reserved : 2;
+ unsigned int cg10_reserved : 2;
+ unsigned int cg11_reserved : 2;
+
+ unsigned int cg12_reserved : 2;
+ unsigned int cg13_reserved : 2;
+ unsigned int cg14_reserved : 2;
+ unsigned int cg15_reserved : 2;
+};
+
+
+//------------------------------------------------------------------------------
+struct EIM_CS_GCR1
+//------------------------------------------------------------------------------
+{
+ unsigned int csen : 1;
+ unsigned int swr : 1;
+ unsigned int srd : 1;
+ unsigned int mum : 1;
+ unsigned int wfl : 1;
+ unsigned int rfl : 1;
+ unsigned int cre : 1;
+ unsigned int crep : 1;
+ unsigned int bl : 3;
+ unsigned int wc : 1;
+ unsigned int bcd : 2;
+ unsigned int bcs : 2;
+ unsigned int dsz : 3;
+ unsigned int sp : 1;
+ unsigned int csrec : 3;
+ unsigned int aus : 1;
+ unsigned int gbc : 3;
+ unsigned int wp : 1;
+ unsigned int psz : 4;
+};
+//------------------------------------------------------------------------------
+struct EIM_CS_GCR2
+//------------------------------------------------------------------------------
+{
+ unsigned int adh : 2;
+ unsigned int reserved_3_2 : 2;
+ unsigned int daps : 4;
+ unsigned int dae : 1;
+ unsigned int dap : 1;
+ unsigned int reserved_11_10 : 2;
+ unsigned int mux16_byp_grant : 1;
+ unsigned int reserved_31_13 : 19;
+};
+//------------------------------------------------------------------------------
+struct EIM_CS_RCR1
+//------------------------------------------------------------------------------
+{
+ unsigned int rcsn : 3;
+ unsigned int reserved_3 : 1;
+ unsigned int rcsa : 3;
+ unsigned int reserved_7 : 1;
+ unsigned int oen : 3;
+ unsigned int reserved_11 : 1;
+ unsigned int oea : 3;
+ unsigned int reserved_15 : 1;
+ unsigned int radvn : 3;
+ unsigned int ral : 1;
+ unsigned int radva : 3;
+ unsigned int reserved_23 : 1;
+ unsigned int rwsc : 6;
+ unsigned int reserved_31_30 : 2;
+};
+//------------------------------------------------------------------------------
+struct EIM_CS_RCR2
+//------------------------------------------------------------------------------
+{
+ unsigned int rben : 3;
+ unsigned int rbe : 1;
+ unsigned int rbea : 3;
+ unsigned int reserved_7 : 1;
+ unsigned int rl : 2;
+ unsigned int reserved_11_10 : 2;
+ unsigned int pat : 3;
+ unsigned int apr : 1;
+ unsigned int reserved_31_16 : 16;
+};
+//------------------------------------------------------------------------------
+struct EIM_CS_WCR1
+//------------------------------------------------------------------------------
+{
+ unsigned int wcsn : 3;
+ unsigned int wcsa : 3;
+ unsigned int wen : 3;
+ unsigned int wea : 3;
+ unsigned int wben : 3;
+ unsigned int wbea : 3;
+ unsigned int wadvn : 3;
+ unsigned int wadva : 3;
+ unsigned int wwsc : 6;
+ unsigned int wbed : 1;
+ unsigned int wal : 1;
+};
+//------------------------------------------------------------------------------
+struct EIM_CS_WCR2
+//------------------------------------------------------------------------------
+{
+ unsigned int wbcdd : 1;
+ unsigned int reserved_31_1 : 31;
+};
+//------------------------------------------------------------------------------
+struct EIM_WCR
+//------------------------------------------------------------------------------
+{
+ unsigned int bcm : 1;
+ unsigned int gbcd : 2;
+ unsigned int reserved_3 : 1;
+ unsigned int inten : 1;
+ unsigned int intpol : 1;
+ unsigned int reserved_7_6 : 2;
+ unsigned int wdog_en : 1;
+ unsigned int wdog_limit : 2;
+ unsigned int reserved_31_11 : 21;
+};
+//------------------------------------------------------------------------------
+struct EIM_WIAR
+//------------------------------------------------------------------------------
+{
+ unsigned int ips_req : 1;
+ unsigned int ips_ack : 1;
+ unsigned int irq : 1;
+ unsigned int errst : 1;
+ unsigned int aclk_en : 1;
+ unsigned int reserved_31_5 : 27;
+};
+//------------------------------------------------------------------------------
+struct EIM_EAR
+//------------------------------------------------------------------------------
+{
+ unsigned int error_addr : 32;
+};
+
+
+//------------------------------------------------------------------------------
+// Prototypes
+//------------------------------------------------------------------------------
+int eim_setup ();
+void eim_write_32 (off_t, unsigned int *);
+void eim_read_32 (off_t, unsigned int *);
+
+void _eim_setup_iomuxc ();
+void _eim_setup_ccm ();
+void _eim_setup_eim ();
+void _eim_cleanup ();
+off_t _eim_calc_offset (off_t);
+void _eim_remap_mem (off_t);
+
+
+//------------------------------------------------------------------------------
+// End-of-File
+//------------------------------------------------------------------------------
diff --git a/sw/test-adder/test-adder.c b/sw/test-adder/test-adder.c
new file mode 100755
index 0000000..70415d8
--- /dev/null
+++ b/sw/test-adder/test-adder.c
@@ -0,0 +1,206 @@
+//------------------------------------------------------------------------------
+// setup-eim.c
+//------------------------------------------------------------------------------
+
+
+//------------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+#include <stdio.h>
+#include <stdlib.h>
+#include "novena-eim.h"
+
+
+//------------------------------------------------------------------------------
+// Demo Adder
+//------------------------------------------------------------------------------
+#define DEMO_ADDER_BASE_ADDR (0x3210)
+#define DEMO_ADDER_REG_X (EIM_BASE_ADDR + DEMO_ADDER_BASE_ADDR + (0<<2))
+#define DEMO_ADDER_REG_Y (EIM_BASE_ADDR + DEMO_ADDER_BASE_ADDR + (1<<2))
+#define DEMO_ADDER_REG_Z (EIM_BASE_ADDR + DEMO_ADDER_BASE_ADDR + (2<<2))
+#define DEMO_ADDER_REG_SC (EIM_BASE_ADDR + DEMO_ADDER_BASE_ADDR + (3<<2))
+
+
+//------------------------------------------------------------------------------
+// Prototypes
+//------------------------------------------------------------------------------
+unsigned int demo_adder_test_round (unsigned int, unsigned int);
+unsigned int lfsr_next_x (unsigned int);
+unsigned int lfsr_next_y (unsigned int);
+
+
+//------------------------------------------------------------------------------
+// Testing Parameters
+//------------------------------------------------------------------------------
+const int NUM_TEST_ROUNDS = 10000;
+const int PRINT_XYZ_VALUES = 1;
+
+
+//------------------------------------------------------------------------------
+int main()
+//------------------------------------------------------------------------------
+{
+ // try to setup eim (return value should be 1)
+ printf("Configuring EIM .. ");
+ int ok = eim_setup();
+ if (ok < 1)
+ { printf("ERROR\n");
+ return EXIT_FAILURE;
+ }
+ else printf("OK\n");
+
+ // run test
+ int i;
+ unsigned int x = 0x12341234, y = 0xABCDABCD, zyx;
+ printf("Testing started.\n");
+ for (i=0; i<NUM_TEST_ROUNDS; i++)
+ {
+ // run another round
+ unsigned int z = demo_adder_test_round(x, y);
+
+ // calculate correct answer
+ zyx = x + y;
+
+ // check result
+ if (z != zyx)
+ { printf("ERROR: round %10d of %10d: x == 0x%08X, y == 0x%08X, z == 0x%08X [z should be 0x%08X]\n", i+1, NUM_TEST_ROUNDS, x, y, z, zyx);
+ exit(EXIT_FAILURE);
+ }
+ else if (PRINT_XYZ_VALUES) printf("OK: round %10d of %10d: x == 0x%08X, y == 0x%08X, z == 0x%08X\n", i+1, NUM_TEST_ROUNDS, x, y, z);
+
+ // update input values
+ x = lfsr_next_x(x);
+ y = lfsr_next_x(y);
+ }
+
+ // ok
+ printf("Testing completed successfully.\n");
+
+ // done
+ return EXIT_SUCCESS;
+}
+
+
+//------------------------------------------------------------------------------
+unsigned int demo_adder_test_round(unsigned int x, unsigned int y)
+//------------------------------------------------------------------------------
+{
+ // write x
+ eim_write_32(DEMO_ADDER_REG_X, &x);
+
+ // write y
+ eim_write_32(DEMO_ADDER_REG_Y, &y);
+
+ /* To make adder calculate something we need to change its control register,
+ * so we read it, increment and write back. Control register is in the lower 16 bits.
+ */
+ unsigned int ctl;
+ eim_read_32(DEMO_ADDER_REG_SC, &ctl);
+ ctl += 1;
+ ctl &= 0x0000FFFF;
+ eim_write_32(DEMO_ADDER_REG_SC, &ctl);
+
+ /* When adder is done, it will write new control value into its status register. Adder has 1-cycle latency
+ * which is very small, we don't even need to poll, just check that status was updated. Status register is
+ * in the upper 16 bits.
+ */
+ unsigned int sts;
+ eim_read_32(DEMO_ADDER_REG_SC, &sts);
+ sts >>= 16;
+ if (sts != ctl)
+ { printf("ERROR: Adder timeout!\n");
+ exit(EXIT_FAILURE);
+ }
+
+ // read z
+ unsigned int z;
+ eim_read_32(DEMO_ADDER_REG_Z, &z);
+
+ // uncomment to trigger an error
+ /**
+ z++;
+ **/
+
+ // done
+ return z;
+}
+
+
+//------------------------------------------------------------------------------
+unsigned int lfsr_next_x(unsigned int value)
+//------------------------------------------------------------------------------
+{
+ //
+ // [32, 31, 29, 28, 27, 25, 24, 23, 21, 19, 17, 14, 10, 6, 4, 2]
+ // 0 1 3 4 5 7 8 9 11 13 15 18 22 24 28 30
+ //
+
+ unsigned int carry = 0;
+
+ carry ^= (value >> 0);
+ carry ^= (value >> 1);
+ carry ^= (value >> 3);
+ carry ^= (value >> 4);
+
+ carry ^= (value >> 5);
+ carry ^= (value >> 7);
+ carry ^= (value >> 8);
+ carry ^= (value >> 9);
+
+ carry ^= (value >> 11);
+ carry ^= (value >> 13);
+ carry ^= (value >> 15);
+ carry ^= (value >> 18);
+
+ carry ^= (value >> 22);
+ carry ^= (value >> 24);
+ carry ^= (value >> 28);
+ carry ^= (value >> 30);
+
+ value >>= 1, value |= (carry << 31);
+
+ return value;
+}
+
+
+//------------------------------------------------------------------------------
+unsigned int lfsr_next_y(unsigned int value)
+//------------------------------------------------------------------------------
+{
+ //
+ // [32, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 1]
+ // 0 15 16 17 18 19 20 21 22 23 24 25 26 27 28 31
+ //
+
+ unsigned int carry = 0;
+
+ carry ^= (value >> 0);
+ carry ^= (value >> 15);
+ carry ^= (value >> 16);
+ carry ^= (value >> 17);
+
+ carry ^= (value >> 18);
+ carry ^= (value >> 19);
+ carry ^= (value >> 20);
+ carry ^= (value >> 21);
+
+ carry ^= (value >> 22);
+ carry ^= (value >> 23);
+ carry ^= (value >> 24);
+ carry ^= (value >> 25);
+
+ carry ^= (value >> 26);
+ carry ^= (value >> 27);
+ carry ^= (value >> 28);
+ carry ^= (value >> 31);
+
+ value >>= 1, value |= (carry << 31);
+
+ return value;
+}
+
+
+
+//------------------------------------------------------------------------------
+// End-of-File
+//------------------------------------------------------------------------------
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