usrp2: reorganized firmware directory

1 files changed, 54 insertions, 27 deletions

diff --git a/firmware/microblaze/lib/clocks.c b/firmware/microblaze/lib/clocks.c
index ccc4a7cc7..2b352a385 100644
--- a/firmware/microblaze/lib/clocks.c
+++ b/firmware/microblaze/lib/clocks.c
@@ -25,40 +25,60 @@
 #include "ad9510.h"
 #include "spi.h"
 #include "u2_init.h"
-#include "nonstdio.h"
+
+//USRP2PLUS clocks:
+//Clock 0: testclk
+//Clock 1: FPGA clk
+//Clock 2: ADC clk
+//Clock 3: DAC clk
+//Clock 4: SER clk
+//Clock 5: TX dboard clk
+//Clock 6: EXP clk
+//Clock 7: RX dboard clk
+
+//TODO: should have enough brains to init the FPGA clock for USRP2+. all others are suspect.
+//note that without EEPROM support u2_hw_rev_major is going to be incorrect.
 
 void 
 clocks_init(void)
 {
   // Set up basic clocking functions in AD9510
-  ad9510_write_reg(0x45, 0x00); // CLK2 drives distribution
+  ad9510_write_reg(0x45, 0x01); // CLK2 drives distribution
 
+  //enable the 100MHz clock output to the FPGA for 50MHz CPU clock
   clocks_enable_fpga_clk(true, 1);
 
   spi_wait();
 
   // Set up PLL for 10 MHz reference
   // Reg 4, A counter, Don't Care
-  ad9510_write_reg(0x05, 0x00);  // Reg 5, B counter MSBs, 0
-  ad9510_write_reg(0x06, 0x05);  // Reg 6, B counter LSBs, 5
+//  ad9510_write_reg(0x05, 0x00);  // Reg 5, B counter MSBs, 0
+//  ad9510_write_reg(0x06, 0x05);  // Reg 6, B counter LSBs, 5
   // Reg 7, Loss of reference detect, doesn't work yet, 0
-  ad9510_write_reg(0x5A, 0x01); // Update Regs
+//  ad9510_write_reg(0x5A, 0x01); // Update Regs
 
   // Primary clock configuration
-  clocks_mimo_config(MC_WE_DONT_LOCK);
+//  clocks_mimo_config(MC_WE_DONT_LOCK);
+
+
+  //wait for the clock to stabilize
+  while(!clocks_lock_detect());
+
+  //issue a reset to the DCM so it locks up to the new freq
+  output_regs->clk_ctrl |= CLK_RESET;
 
   // Set up other clocks
   //clocks_enable_test_clk(false, 0);
   //clocks_enable_tx_dboard(false, 0);
   //clocks_enable_rx_dboard(false, 0);
-  clocks_enable_eth_phyclk(false, 0);
+//  clocks_enable_eth_phyclk(false, 0); //PHY clk is separate now (u2r4, u2p)
 
   // Enable clock to ADCs and DACs
   //clocks_enable_dac_clk(true, 1);
   //clocks_enable_adc_clk(true, 1);
 }
 
-
+/*
 void
 clocks_mimo_config(int flags)
 {
@@ -86,7 +106,7 @@ clocks_mimo_config(int flags)
   spi_wait();
   
   // Allow for clock switchover
-  
+  // The below masks include 0x10, which issues a reset to the DCM.  
   if (flags & _MC_WE_LOCK){		// WE LOCK
     if (flags & _MC_MIMO_CLK_INPUT) {
       // Turn on ref output and choose the MIMO connector
@@ -103,18 +123,17 @@ clocks_mimo_config(int flags)
   }
 
   // Do we drive a clock onto the MIMO connector?
-  if (flags & MC_PROVIDE_CLK_TO_MIMO)
-    clocks_enable_clkexp_out(true,10);
-  else
-    clocks_enable_clkexp_out(false,0); 
+//  if (flags & MC_PROVIDE_CLK_TO_MIMO)
+//    clocks_enable_clkexp_out(true,10);
+//  else
+//    clocks_enable_clkexp_out(false,0); 
 }
+*/
 
 bool 
 clocks_lock_detect()
 {
-  if(pic_regs->pending & PIC_CLKSTATUS)
-    return true;
-  return false;
+    return (pic_regs->pending & PIC_CLKSTATUS);
 }
 
 int inline
@@ -136,21 +155,23 @@ clocks_gen_div(int divisor)
 #define CLOCK_MODE_LVDS 2
 #define CLOCK_MODE_CMOS 3
 
+//CHANGED: set to PECL for default behavior
 void 
 clocks_enable_XXX_clk(bool enable, int divisor, int reg_en, int reg_div, int mode)
 {
   int enable_word, div_word, div_en_word;
 
   switch(mode) {
-  case CLOCK_MODE_PECL :
-    enable_word = enable ? 0x08 : 0x0A;
-    break;
   case CLOCK_MODE_LVDS :
     enable_word = enable ? 0x02 : 0x03;
     break;
   case CLOCK_MODE_CMOS :
     enable_word = enable ? 0x08 : 0x09;
     break;
+  case CLOCK_MODE_PECL :
+	default:
+    enable_word = enable ? 0x08 : 0x0A;
+    break;
   }
   if(enable && (divisor>1)) {
     div_word = clocks_gen_div(divisor);
@@ -180,8 +201,8 @@ clocks_enable_fpga_clk(bool enable, int divisor)
 {
   clocks_enable_XXX_clk(enable,divisor,0x3D,0x4A,CLOCK_MODE_PECL);
 }
-
-// Clock 2 on Rev 3, Clock 5 on Rev 4
+/*
+// Clock 2 on Rev 3, Clock 5 on Rev 4, Clock 6 on USRP2+
 void
 clocks_enable_clkexp_out(bool enable, int divisor)
 {
@@ -192,13 +213,19 @@ clocks_enable_clkexp_out(bool enable, int divisor)
     ad9510_write_reg(0x35,0x00);  // Set Full Scale to nearly 10ns
     ad9510_write_reg(0x36,0x1c);  // Set fine delay.  0x20 is midscale
     clocks_enable_XXX_clk(enable,divisor,0x41,0x52,CLOCK_MODE_LVDS);
-    
   }
+	else if(u2_hw_rev_major == 10) {
+		ad9510_write_reg(0x34, 0x00);
+		ad9510_write_reg(0x35, 0x00);
+		ad9510_write_reg(0x36, 0x1C);
+		clocks_enable_XXX_clk(enable, divisor, 0x42, 0x52, CLOCK_MODE_LVDS);
+	}
   else
-    putstr("ERR: Invalid Rev\n");
+    putstr("ERR (clocks_enable_clkexp_out): Invalid hw rev, don't know what to do!\n");
 }
-
-// Clock 5 on Rev 3, none (was 2) on Rev 4
+*/
+/*
+// Clock 5 on Rev 3, none (was 2) on Rev 4, none on USRP2+
 void
 clocks_enable_eth_phyclk(bool enable, int divisor)
 {
@@ -207,9 +234,9 @@ clocks_enable_eth_phyclk(bool enable, int divisor)
   else if(u2_hw_rev_major == 4)
     clocks_enable_XXX_clk(enable,divisor,0x3E,0x4C,CLOCK_MODE_PECL);
   else
-    putstr("ERR: Invalid Rev\n");
+    putstr("(clocks_enable_eth_phyclk): no eth PHY clock or invalid hw rev\n"); //not really an error
 }
-
+*/
 // Clock 3
 /*void
 clocks_enable_dac_clk(bool enable, int divisor)