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http://p4web.freebsd.org/chv.cgi?CH=171297
Change 171297 by raj@raj_fdt on 2009/12/02 19:48:47
Connect FDT ofw I/F back-end to the build.
This gives us an FDT-enabled MPC85XX kernel featuring /dev/openfirm
charcter device, accessible from user space.
For more details and examples see
http://wiki.freebsd.org/FlattenedDeviceTree/kernel
Affected files ...
.. //depot/projects/fdt/sys/conf/files.powerpc#3 edit
.. //depot/projects/fdt/sys/powerpc/booke/machdep.c#2 edit
Differences ...
==== //depot/projects/fdt/sys/conf/files.powerpc#3 (text+ko) ====
@@ -33,13 +33,14 @@
dev/fb/fb.c optional sc
dev/hwpmc/hwpmc_powerpc.c optional hwpmc
dev/kbd/kbd.c optional sc
-dev/ofw/openfirm.c optional aim
-dev/ofw/openfirmio.c optional aim
-dev/ofw/ofw_bus_if.m optional aim
-dev/ofw/ofw_if.m optional aim
-dev/ofw/ofw_bus_subr.c optional aim
+dev/ofw/openfirm.c optional aim | fdt
+dev/ofw/openfirmio.c optional aim | fdt
+dev/ofw/ofw_bus_if.m optional aim | fdt
+dev/ofw/ofw_if.m optional aim | fdt
+dev/ofw/ofw_bus_subr.c optional aim | fdt
dev/ofw/ofw_console.c optional aim
dev/ofw/ofw_disk.c optional ofwd aim
+dev/ofw/ofw_fdt.c optional fdt
dev/ofw/ofw_iicbus.c optional iicbus aim
dev/ofw/ofw_standard.c optional aim
dev/powermac_nvram/powermac_nvram.c optional powermac_nvram powermac
==== //depot/projects/fdt/sys/powerpc/booke/machdep.c#2 (text+ko) ====
@@ -135,6 +135,8 @@
#include <sys/linker.h>
#include <sys/reboot.h>
+#include <dev/ofw/openfirm.h>
+
#include <powerpc/mpc85xx/ocpbus.h>
#include <powerpc/mpc85xx/mpc85xx.h>
@@ -334,12 +336,13 @@
{
struct pcpu *pc;
void *kmdp;
- vm_offset_t end;
+ vm_offset_t end, dtbp;
uint32_t csr;
kmdp = NULL;
end = endkernel;
+ dtbp = (vm_offset_t)NULL;
/*
* Parse metadata and fetch parameters. This must be done as the first
@@ -354,6 +357,7 @@
boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
kern_envp = MD_FETCH(kmdp, MODINFOMD_ENVP, char *);
+ dtbp = MD_FETCH(kmdp, MODINFOMD_DTBP, vm_offset_t);
end = MD_FETCH(kmdp, MODINFOMD_KERNEND, vm_offset_t);
#ifdef DDB
ksym_start = MD_FETCH(kmdp, MODINFOMD_SSYM, uintptr_t);
@@ -372,9 +376,15 @@
* restore everything as the TLB have all been reprogrammed
* in the locore etc...)
*/
- while(1);
+ while (1);
}
+ if (OF_install(OFW_FDT, 0) == FALSE)
+ while (1);
+
+ if (OF_init((void *)dtbp) != 0)
+ while (1);
+
/* Initialize TLB1 handling */
tlb1_init(bootinfo->bi_bar_base);
@@ -417,6 +427,8 @@
csr = ccsr_read4(OCP85XX_L2CTL);
debugf(" L2CTL = 0x%08x\n", csr);
+ printf(" dtbp = 0x%08x\n", (uint32_t)dtbp);
+
print_bootinfo();
print_kernel_section_addr();
print_kenv();
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