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Code Issues Releases Activity

Check the environment for system devices before using the FDT.

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This allows overriding the FDT, and allows specifying a debug
port.
This commit is contained in:
Marcel Moolenaar 2011-01-17 23:34:36 +00:00
parent bc35e60ec0
commit 3470949a74
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=217520
1 changed files with 11 additions and 8 deletions
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19
sys/dev/uart/uart_bus_fdt.c
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@ -140,6 +140,15 @@ uart_cpu_getdev(int devtype, struct uart_devinfo *di)
u_long start, size;
int err;
uart_bus_space_mem = fdtbus_bs_tag;
uart_bus_space_io = NULL;
/* Allow overriding the FDT uning the environment. */
class = &uart_ns8250_class;
err = uart_getenv(devtype, di, class);
if (!err)
return (0);
if (devtype != UART_DEV_CONSOLE)
return (ENXIO);
@ -183,18 +192,12 @@ uart_cpu_getdev(int devtype, struct uart_devinfo *di)
di->databits = 8;
di->stopbits = 1;
di->parity = UART_PARITY_NONE;
di->bas.bst = fdtbus_bs_tag;
di->bas.bst = uart_bus_space_mem;
err = fdt_regsize(node, &start, &size);
if (err)
return (ENXIO);
start += fdt_immr_va;
uart_bus_space_mem = fdtbus_bs_tag;
uart_bus_space_io = NULL;
if (bus_space_map(di->bas.bst, start, size, 0, &di->bas.bsh) != 0)
return (ENXIO);
return (0);
return (bus_space_map(di->bas.bst, start, size, 0, &di->bas.bsh));
}