Okay I got a little further now...
On Wed, Jul 25, 2007 at 10:13:42PM +0200, andrzej zaborowski wrote:
> On 24/07/07, Juergen Lock <[EMAIL PROTECTED]> wrote:
>> I was under the impression that -append doesnt work, is this wrong?
>> Also /proc/cmdline on the zaurus is
>> console=ttyS0 root=/dev/mtdblock2
>> mtdparts=sharpsl-nand:[EMAIL PROTECTED](smf),[EMAIL PROTECTED](root),-(home)
>> jffs2_orphaned_inodes=delete EQUIPMENT=5 LOGOLANG=1 DEFYEAR=2007 LOGO=1
>> LAUNCH=q
>> and even when I do pass that with -append to qemu I still dont get
>> anything on the serial console. So maybe the problem is just missing
>> kernel commandline... Can -append be fixed?
>
> No, not in qemu :( zaurus kernels don't accept any parameters from
> bootloaders, that's because they use the
> arch/arm/boot/compressed/head-sharpsl.S file instead of the generic
> arm head.S. Set the parameters in your .config.
Actually... at least the sharp kernel does in fact take args as
I found out, but it wants them in the old-style struct param_struct
as defined in linux/include/asm-arm/setup.h (because of
CONFIG_SHARPSL_BOOTLDR_PARAMS e.g. in linux/arch/arm/mach-pxa/corgi.c)
I've prepared a patch that adds an -old-param flag to qemu (to be used
together with -append), see patch-arm-oldparms (attached). And the
reason I got nothing on ttyS0 was simply that the sharp kernel had
CONFIG_SERIAL_CONSOLE unset... (as seen e.g. in
linux/arch/arm/def-configs/terrier-j)
>
>> Could be, but can `info jit' also show no change then? (qemu is still
>> using all the cpu time it can get.)
>
> Oh, then maybe it really hangs. I have only tested 2.6 kernels from
> different trees (but they were all descendants of linus' tree more
> than Sharp's) and OpenBSD (some post 4.0 cvs checkout). It's possible
> that Sharp kernels depend on something that is set up by the Sharp
> PROM code, which is closed-source (the one that runs the japanese
> menu). It should be possible to run it in qemu though.
I've managed to build a sharp kernel with a modified config now
(sidux live cd to the rescue!) and then saw that its hanging after the
sound init. built a cross gdb (which was easier than I thought, luckily
qemu's gdbserver listens on the network so I didn't even have to build
a qemu snapshot on linux :), and found it hanging in a tight loop
waiting for bit 0 (TNF) of SASR0 in corgi_i2s_write in
linux/drivers/sound/pxa-i2s_spitz.c . Patched that (not sure its
right but it works for me, see patch-pxa-audio), and now I get lots of
nand ecc errors and mount failures, I guess the mtdparts= arg isnt right
yet and/or the raw2flash.c source needs fixing...
>
>> > Installing debian however should not
>> >depend on what rom you use, afterall debian is supposed to replace the
>> >contents.
>>
>> Well I dont want to replace the contents, I want to run debian in
>> addition to the sharp stuff in a chroot :) See e.g. here,
>> http://wiki.debian.org/PocketWorkstation
>> and under `Installing Debian/PocketWorkstation' here:
>> http://www.users.on.net/~hluc/myZaurus/jumbo/xqtjumbo.html
>> (these instructions and packages are a bit dated and not directly for
>> c3200 which is one of the reasons i'd like to test/prepare things
>> using qemu.)
>
> I still think that debian shouldn't care about what was your original
> distribution or what distribution hosts the chroot environment.
In an ideal world... At least it interacts with the (old in this case)
kernel, and also the xserver (x/qt) that will run outside the chroot.
Thanx,
Juergen
Index: qemu/hw/arm_boot.c
@@ -76,6 +76,76 @@
stl_raw(p++, 0);
}
+static void set_kernel_args_old(uint32_t ram_size, int initrd_size,
+ const char *kernel_cmdline,
+ target_phys_addr_t loader_start)
+{
+ uint32_t *p;
+ unsigned char *s;
+
+ /* see linux/include/asm-arm/setup.h */
+ p = (uint32_t *)(phys_ram_base + KERNEL_ARGS_ADDR);
+ /* page_size */
+ stl_raw(p++, 4096);
+ /* nr_pages */
+ stl_raw(p++, ram_size / 4096);
+ /* ramdisk_size */
+ stl_raw(p++, 0);
+#define FLAG_READONLY 1
+#define FLAG_RDLOAD 4
+#define FLAG_RDPROMPT 8
+ /* flags */
+ stl_raw(p++, FLAG_READONLY | FLAG_RDLOAD | FLAG_RDPROMPT);
+ /* rootdev */
+ stl_raw(p++, (31 << 8) | 0); /* /dev/mtdblock0 */
+ /* video_num_cols */
+ stl_raw(p++, 0);
+ /* video_num_rows */
+ stl_raw(p++, 0);
+ /* video_x */
+ stl_raw(p++, 0);
+ /* video_y */
+ stl_raw(p++, 0);
+ /* memc_control_reg */
+ stl_raw(p++, 0);
+ /* unsigned char sounddefault */
+ /* unsigned char adfsdrives */
+ /* unsigned char bytes_per_char_h */
+ /* unsigned char bytes_per_char_v */
+ stl_raw(p++, 0);
+ /* pages_in_bank[4] */
+ stl_raw(p++, 0);
+ stl_raw(p++, 0);
+ stl_raw(p++, 0);
+ stl_raw(p++, 0);
+ /* pages_in_vram */
+ stl_raw(p++, 0);
+ /* initrd_start */
+ if (initrd_size)
+ stl_raw(p++, loader_start + INITRD_LOAD_ADDR);
+ else
+ stl_raw(p++, 0);
+ /* initrd_size */
+ stl_raw(p++, initrd_size);
+ /* rd_start */
+ stl_raw(p++, 0);
+ /* system_rev */
+ stl_raw(p++, 0);
+ /* system_serial_low */
+ stl_raw(p++, 0);
+ /* system_serial_high */
+ stl_raw(p++, 0);
+ /* mem_fclk_21285 */
+ stl_raw(p++, 0);
+ /* zero unused fields */
+ memset(p, 0, 256 + 1024 - (p - ((uint32_t *)(phys_ram_base +
KERNEL_ARGS_ADDR))));
+ s = phys_ram_base + KERNEL_ARGS_ADDR + 256 + 1024;
+ if (kernel_cmdline)
+ strcpy (s, kernel_cmdline);
+ else
+ stb_raw(s, 0);
+}
+
void arm_load_kernel(CPUState *env, int ram_size, const char *kernel_filename,
const char *kernel_cmdline, const char *initrd_filename,
int board_id, target_phys_addr_t loader_start)
@@ -140,6 +210,9 @@
bootloader[6] = entry;
for (n = 0; n < sizeof(bootloader) / 4; n++)
stl_raw(phys_ram_base + (n * 4), bootloader[n]);
- set_kernel_args(ram_size, initrd_size, kernel_cmdline, loader_start);
+ if (old_param)
+ set_kernel_args_old(ram_size, initrd_size, kernel_cmdline,
loader_start);
+ else
+ set_kernel_args(ram_size, initrd_size, kernel_cmdline,
loader_start);
}
}
Index: qemu/vl.c
@@ -204,6 +204,7 @@
int nb_option_roms;
int semihosting_enabled = 0;
int autostart = 1;
+int old_param = 0;
const char *qemu_name;
int alt_grab = 0;
#ifdef TARGET_SPARC
@@ -6949,6 +6950,7 @@
QEMU_OPTION_semihosting,
QEMU_OPTION_name,
QEMU_OPTION_prom_env,
+ QEMU_OPTION_old_param,
};
typedef struct QEMUOption {
@@ -7050,6 +7052,9 @@
#if defined(TARGET_SPARC)
{ "prom-env", HAS_ARG, QEMU_OPTION_prom_env },
#endif
+#if defined(TARGET_ARM)
+ { "old-param", 0, QEMU_OPTION_old_param },
+#endif
{ NULL },
};
@@ -7825,6 +7830,8 @@
nb_prom_envs++;
break;
#endif
+ case QEMU_OPTION_old_param:
+ old_param = 1;
}
}
}
Index: qemu/vl.h
@@ -170,6 +170,7 @@
extern int no_quit;
extern int semihosting_enabled;
extern int autostart;
+extern int old_param;
extern const char *bootp_filename;
#define MAX_OPTION_ROMS 16
Index: qemu/hw/pxa2xx.c
@@ -1564,7 +1564,12 @@
case SACR1:
return s->control[1];
case SASR0:
+#if 1
+ /* XXX is this right? (TNF) */
+ return s->status | (s->fifo_len < 16 || !s->enable);
+#else
return s->status;
+#endif
case SAIMR:
return s->mask;
case SAICR:
