If CONFIG_MICRO_SUPPORT_CARD is enabled, U-Boot tries to get access to the devices on the support card, which may not actually exist.
Check the DT and search for the on-board devices run-time. If the nodes are not found in DT, then disable the code.
Signed-off-by: Masahiro Yamada yamada.masahiro@socionext.com ---
arch/arm/mach-uniphier/micro-support-card.c | 33 +++++++++++++++++++++ 1 file changed, 33 insertions(+)
diff --git a/arch/arm/mach-uniphier/micro-support-card.c b/arch/arm/mach-uniphier/micro-support-card.c index 1be5685c6fbf..46879019fdaa 100644 --- a/arch/arm/mach-uniphier/micro-support-card.c +++ b/arch/arm/mach-uniphier/micro-support-card.c @@ -18,6 +18,25 @@ #define MICRO_SUPPORT_CARD_RESET ((MICRO_SUPPORT_CARD_BASE) + 0xd0034) #define MICRO_SUPPORT_CARD_REVISION ((MICRO_SUPPORT_CARD_BASE) + 0xd00E0)
+static bool support_card_found; + +static void support_card_detect(void) +{ + DECLARE_GLOBAL_DATA_PTR; + const void *fdt = gd->fdt_blob; + int offset; + + offset = fdt_node_offset_by_compatible(fdt, 0, "smsc,lan9118"); + if (offset < 0) + return; + + offset = fdt_node_offset_by_compatible(fdt, 0, "ns16550a"); + if (offset < 0) + return; + + support_card_found = true; +} + /* * 0: reset deassert, 1: reset * @@ -51,6 +70,11 @@ static int support_card_show_revision(void)
void support_card_init(void) { + support_card_detect(); + + if (!support_card_found) + return; + support_card_reset(); /* * After power on, we need to keep the LAN controller in reset state @@ -67,6 +91,9 @@ void support_card_init(void)
int board_eth_init(bd_t *bis) { + if (!support_card_found) + return 0; + return smc911x_initialize(0, SMC911X_BASE); } #endif @@ -161,6 +188,9 @@ static void detect_num_flash_banks(void)
void support_card_late_init(void) { + if (!support_card_found) + return; + detect_num_flash_banks(); }
@@ -221,6 +251,9 @@ void led_puts(const char *s) int i; u32 val = 0;
+ if (!support_card_found) + return; + if (!s) return;