Dear Wolfgang Denk,
+/*
- The MX31ADS board seems to have a hardware "peculiarity"
confirmed under
- U-Boot, RedBoot and Linux: the ethernet Rx signal is reaching the
CS8900A
- controller inverted. The controller is capable of detecting and
correcting
- this, but it needs 4 network packets for that. Which means, at
startup, you
- will not receive answers to the first 4 packest, unless there
have been some
- broadcasts on the network, or your board is on a hub. Reducing
the ARP
- timeout from default 5 seconds to 200ms we speed up the initial TFTP
- transfer, should the user wish one, significantly.
- */
+#define CONFIG_ARP_TIMEOUT 200UL
Is this really needed on your hardware, too? I doubt it.
Probably, this is not needed. I'll remove this.
In our board which has SMC9118 controller, it seems that it needs a few hundred milliseconds wait after the initialization. So this is needed. I'll modify only these comment.
+/* Address and size of Redundant Environment Sector */ +#define CFG_ENV_OFFSET_REDUND (CFG_ENV_OFFSET + CFG_ENV_SIZE) +#define CFG_ENV_SIZE_REDUND CFG_ENV_SIZE
+/* S29WS256N NOR flash has 4 32KiB small sectors at the beginning and at the end.
- The rest of 32MiB is in 128KiB big sectors. U-Boot occupies the
low 4 sectors,
- if we put environment next to it, we will have to occupy 128KiB
for it.
- Putting it at the top of flash we use only 32KiB. */
+#define CFG_ENV_ADDR (CFG_MONITOR_BASE + CFG_ENV_SECT_SIZE)
This is a very ugly set up, because you split the U-Boot related informatiomn, and you block both ends of your flash memory. Why don;t you locate the environment for example in the third and fourts sectors, i. e. use such a setup (called "embedded environment"):
sector 1: 32 KiB - U-Boot code sector 2: 32 KiB - more U-Boot code sector 3: 32 KiB - environment, first copy sector 4: 32 KiB - environment, second (redundant) copy sector 5: 128 KiB - more U-Boot code ...?
Indeed. I think so too. I'll rework.
In our board which has S29GL512N NOR flash, it has 512 128KiB big sector only. So I leave this, and I'll modify only these comment.
sector 1: 128 KiB - U-Boot code sector 2: 128 KiB - environment, first copy sector 3: 128 KiB - environment, second (redundant) copy sector 4: 128 KiB - more U-Boot code
Regards, Atsuo Igarashi