CSB337 boards originally shipped with MicroMonitor, not U-Boot; and with a version using a different convention for recording Ethernet addresses than anyone else. To avoid breaking Linux when it uses U-Boot, have it use the same convention on that hardware.
Signed-off-by: David Brownell dbrownell@users.sourceforge.net --- cpu/arm920t/at91rm9200/ether.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-)
--- a/cpu/arm920t/at91rm9200/ether.c +++ b/cpu/arm920t/at91rm9200/ether.c @@ -24,6 +24,7 @@ #include <at91rm9200_net.h> #include <net.h> #include <miiphy.h> +#include <asm/mach-types.h>
/* ----- Ethernet Buffer definitions ----- */
@@ -184,7 +185,7 @@ int eth_init (bd_t * bd)
p_mac->EMAC_CFG |= AT91C_EMAC_CSR; /* Clear statistics */
- /* Init Ehternet buffers */ + /* Init Ethernet buffers */ for (i = 0; i < RBF_FRAMEMAX; i++) { rbfdt[i].addr = (unsigned long)rbf_framebuf[i]; rbfdt[i].size = 0; @@ -193,9 +194,22 @@ int eth_init (bd_t * bd) rbfp = &rbfdt[0];
eth_getenv_enetaddr("ethaddr", enetaddr); - p_mac->EMAC_SA2L = (enetaddr[3] << 24) | (enetaddr[2] << 16) - | (enetaddr[1] << 8) | (enetaddr[0]); - p_mac->EMAC_SA2H = (enetaddr[5] << 8) | (enetaddr[4]); + + /* The CSB337 originally used a version of the MicroMonitor bootloader + * which saved Ethernet addresses in the "wrong" order. Operating + * systems (like Linux) know this, and apply a workaround. Replicate + * that MicroMonitor behavior so we avoid needing to make such OS code + * care about which bootloader was used. + */ + if (machine_is_csb337()) { + p_mac->EMAC_SA2H = (enetaddr[0] << 8) | (enetaddr[1]); + p_mac->EMAC_SA2L = (enetaddr[2] << 24) | (enetaddr[3] << 16) + | (enetaddr[4] << 8) | (enetaddr[5]); + } else { + p_mac->EMAC_SA2L = (enetaddr[3] << 24) | (enetaddr[2] << 16) + | (enetaddr[1] << 8) | (enetaddr[0]); + p_mac->EMAC_SA2H = (enetaddr[5] << 8) | (enetaddr[4]); + }
p_mac->EMAC_RBQP = (long) (&rbfdt[0]); p_mac->EMAC_RSR &= ~(AT91C_EMAC_RSR_OVR | AT91C_EMAC_REC | AT91C_EMAC_BNA);