ENGR00163697 - FEC : Adjust MX53 Network stream throughput.

 - When the system is very busy(such as play 1080p streaming in local)
   the WIFI & FEC performance were very low.
 - Enable the patch in uboot for WIFI and FEC performance:
   If WIFI connect to PORT2, enable the config:
  	 CONFIG_ADJUST_WIFI_FEC_PERFORMANCE
  	 CONFIG_WIFI_SDHC_PORT2
   If WIFI connect to port3, enable the config:
   	CONFIG_ADJUST_WIFI_FEC_PERFORMANCE
	CONFIG_WIFI_SDHC_PORT3
 - The solution of the patch:
   I. Changing M4IF dynamic jump value to zero, which can guarantee FEC the
      high rate of accessing bus.
   II. Increase Master 4 priority for FEC.
       Increase Master 2 and AHBMAX priority for WIFI.
   - Test result:
     i.MX53 FEC bandwidth (1080p streaming playback in local): 47.1 Mbits/sec.

Signed-off-by: Fugang Duan  <B38611@freescale.com>

1 files changed, 110 insertions, 0 deletions

diff --git a/board/freescale/mx53_ard/lowlevel_init.S b/board/freescale/mx53_ard/lowlevel_init.S
index 67cfe2e..1ce5f70 100644
--- a/board/freescale/mx53_ard/lowlevel_init.S
+++ b/board/freescale/mx53_ard/lowlevel_init.S
@@ -90,6 +90,111 @@
 	beq 1b
 .endm
 
+.macro init_m4if
+	/*increase master2 priority for WIFI*/
+	ldr r0, =M4IF_BASE_ADDR
+	ldr r1, [r0, #0x40]
+	orr r1, r1, #(0x33 << 16)
+	str r1, [r0, #0x40]
+
+	/*increase master4 priority for FEC*/
+	ldr r1, [r0, #0x44]
+	orr r1, r1, #0x33
+	str r1, [r0, #0x44]
+
+	/*set SDHC-port3 high priority to all AHB MAX Slave port*/
+	ldr r0, =AHBMAX_BASE_ADDR
+
+#ifdef CONFIG_WIFI_SDHC_PORT3
+	/*set PARK to SDHC-port3*/
+	ldr r0, =AHBMAX_BASE_ADDR
+	ldr r1, [r0, #0x10]
+	bic r1, r1, #(0x7 << 0)
+	orr r1, r1, #0x3
+	bic r1, r1, #(0x3 << 4)
+	bic r1, r1, #(0x3 << 8)
+	orr r1, r1, #(0x1 << 30)
+	bic r1, r1, #(0x1 << 31)
+
+	ldr r1, [r0, #0x110]
+	bic r1, r1, #(0x7 << 0)
+	orr r1, r1, #0x3
+	bic r1, r1, #(0x3 << 4)
+	bic r1, r1, #(0x3 << 8)
+	orr r1, r1, #(0x1 << 30)
+	bic r1, r1, #(0x1 << 31)
+
+	ldr r1, [r0, #0x210]
+	bic r1, r1, #(0x7 << 0)
+	orr r1, r1, #0x3
+	bic r1, r1, #(0x3 << 4)
+	bic r1, r1, #(0x3 << 8)
+	orr r1, r1, #(0x1 << 30)
+	bic r1, r1, #(0x1 << 31)
+
+	ldr r1, [r0, #0x310]
+	bic r1, r1, #(0x7 << 0)
+	orr r1, r1, #0x3
+	bic r1, r1, #(0x3 << 4)
+	bic r1, r1, #(0x3 << 8)
+	orr r1, r1, #(0x1 << 30)
+	bic r1, r1, #(0x1 << 31)
+
+	/*set SDHC-port3 arbitration*/
+	ldr r0, =AHBMAX_BASE_ADDR
+	ldr r1, [r0, #0xb00]
+	bic r1, r1, #(0x7 << 0)
+	orr r1, r1, #0x1
+#endif
+
+#ifdef CONFIG_WIFI_SDHC_PORT2
+	/*set PARK to SDHC-port3*/
+	ldr r0, =AHBMAX_BASE_ADDR
+	ldr r1, [r0, #0x10]
+	bic r1, r1, #(0x7 << 0)
+	orr r1, r1, #0x2
+	bic r1, r1, #(0x3 << 4)
+	bic r1, r1, #(0x3 << 8)
+	orr r1, r1, #(0x1 << 30)
+	bic r1, r1, #(0x1 << 31)
+
+	ldr r1, [r0, #0x110]
+	bic r1, r1, #(0x7 << 0)
+	orr r1, r1, #0x2
+	bic r1, r1, #(0x3 << 4)
+	bic r1, r1, #(0x3 << 8)
+	orr r1, r1, #(0x1 << 30)
+	bic r1, r1, #(0x1 << 31)
+
+	ldr r1, [r0, #0x210]
+	bic r1, r1, #(0x7 << 0)
+	orr r1, r1, #0x2
+	bic r1, r1, #(0x3 << 4)
+	bic r1, r1, #(0x3 << 8)
+	orr r1, r1, #(0x1 << 30)
+	bic r1, r1, #(0x1 << 31)
+
+	ldr r1, [r0, #0x310]
+	bic r1, r1, #(0x7 << 0)
+	orr r1, r1, #0x2
+	bic r1, r1, #(0x3 << 4)
+	bic r1, r1, #(0x3 << 8)
+	orr r1, r1, #(0x1 << 30)
+	bic r1, r1, #(0x1 << 31)
+
+	/*set SDHC-port2 arbitration*/
+	ldr r0, =AHBMAX_BASE_ADDR
+	ldr r1, [r0, #0xA00]
+	bic r1, r1, #(0x7 << 0)
+#endif
+
+	/*set JMP step to zero*/
+	ldr r0, =M4IF_BASE_ADDR
+	ldr r1, [r0, #0x48]
+	bic r1, r1, #(0x3 << 8)
+	str r1, [r0, #0x48]
+.endm
+
 .macro init_clock
 	ldr r0, =ROM_SI_REV
 	ldr r1, [r0]
@@ -232,6 +337,11 @@ lowlevel_init:
 
 	init_aips
 
+#ifdef CONFIG_ADJUST_WIFI_FEC_PERFORMANCE
+        /*increase WIFI & FEC priority of accessing bus*/
+        init_m4if
+#endif
+
 	init_clock
 
 	mov pc, lr