| Message ID | CAKwPUozgoKv65xP-6m_U-4H+JL1hiBdktv7hKb6pbV7PiX0_vQ@mail.gmail.com |
|---|---|
| State | Not Applicable |
| Headers | show |
Dear Kassey Lee, In message <CAKwPUozgoKv65xP-6m_U-4H+JL1hiBdktv7hKb6pbV7PiX0_vQ@mail.gmail.com> you wrote: > > I've tried the examples/standalone/hello_world.c, it > works on my platform! Good. > but when i add more functions in > examples/standalone/hello_world.c, for example > it will take the test function as the entry, but ignore > the hello_world ? can i have more than one functions in a standalone > application C source code ? thanks You can have as many functions as you like, but there is usually only one entry point. Also, please pay attention on the documented, mandatory entry sequence (including using app_startup() ). > and what's more, can we use IRQ on arm platform for > standalone application that is already supported by u-boot? The infrastructure is in place, so it should be possible, but I think not all ARM systems actually implement interrupt support, so please checn the architecture specific code for your CPU. Best regards, Wolfgang Denk
diff --git a/examples/standalone/hello_world.c b/examples/standalone/hello_world.c index 067c390..226ddef 100644 --- a/examples/standalone/hello_world.c +++ b/examples/standalone/hello_world.c @@ -24,6 +24,11 @@ #include <common.h> #include <exports.h> +void test(int i) +{ + printf(" this is a test %d \n", i); +} + int hello_world (int argc, char * const argv[]) { int i;
hi, Wolfgang: I've tried the examples/standalone/hello_world.c, it works on my platform! but when i add more functions in examples/standalone/hello_world.c, for example it will take the test function as the entry, but ignore the hello_world ? can i have more than one functions in a standalone application C source code ? thanks and what's more, can we use IRQ on arm platform for standalone application that is already supported by u-boot? here is the log: U-Boot 2011.12-00889-g7a0eac3-dirty (Aug 02 2012 - 22:36:53) DRAM: 64 MiB WARNING: Caches not enabled NAND: 256 MiB MMC: SDHCI: 0 *** Warning - bad CRC, using default environment In: serial Out: serial Err: serial Hit any key to stop autoboot: 0 [test] loadb 0x81000000 ## Ready for binary (kermit) download to 0x81000000 at 115200 bps... ## Total Size = 0x0000027f = 639 Bytes ## Start Addr = 0x81000000 [test] go 0x81000000 ## Starting application at 0x81000000 ... this is a test 1 ## Application terminated, rc = 0x13