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[dwmac] Show core version in debug messages

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Read and display the core version immediately after mapping the MMIO
registers, to provide a basic sanity check that the registers have
been correctly mapped and the core is not held in reset.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2025-07-30 15:59:38 +01:00
parent 01b1028d4e
commit f7a1e9ef8e
2 changed files with 15 additions and 0 deletions
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7
src/drivers/net/dwmac.c
View File

@@ -552,6 +552,7 @@ static int dwmac_probe ( struct dt_device *dt, unsigned int offset ) {
struct net_device *netdev;
struct dwmac *dwmac;
union dwmac_mac mac;
uint32_t version;
int rc;
/* Allocate and initialise net device */
@@ -580,6 +581,12 @@ static int dwmac_probe ( struct dt_device *dt, unsigned int offset ) {
rc = -ENODEV;
goto err_ioremap;
}
version = readl ( dwmac->regs + DWMAC_VER );
DBGC ( dwmac, "DWMAC %s version %x.%x (user %x.%x)\n", dwmac->name,
DWMAC_VER_CORE_MAJOR ( version ),
DWMAC_VER_CORE_MINOR ( version ),
DWMAC_VER_USER_MAJOR ( version ),
DWMAC_VER_USER_MINOR ( version ) );
/* Fetch devicetree MAC address */
if ( ( rc = fdt_mac ( &sysfdt, offset, netdev ) ) != 0 ) {

8
src/drivers/net/dwmac.h
View File

@@ -38,6 +38,14 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
/** Version register */
#define DWMAC_VER DWMAC_MAC_REG ( 8 )
#define DWMAC_VER_USER_MAJOR( x ) \
( ( (x) >> 12 ) & 0xf ) /**< User major version */
#define DWMAC_VER_USER_MINOR( x ) \
( ( (x) >> 8 ) & 0xf ) /**< User minor version */
#define DWMAC_VER_CORE_MAJOR( x ) \
( ( (x) >> 4 ) & 0xf ) /**< Core major version */
#define DWMAC_VER_CORE_MINOR( x ) \
( ( (x) >> 0 ) & 0xf ) /**< Core minor version */
/** Debug register */
#define DWMAC_DEBUG DWMAC_MAC_REG ( 9 )