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November 2017
- 3 participants
- 5 discussions

[PATCH] libopenbios/bootinfo_load.c: Implement Mac OS 9.2 boot script support
by Programmingkid Dec. 25, 2017
by Programmingkid Dec. 25, 2017
Dec. 25, 2017
This patch makes booting Mac OS 9.2 possible. It replaces all occurrences of
>r and r> with sub_>r and sub_r>. This allows for the return stack to be left
alone. This patch also makes it so that the boot script is executed one line at a time.
Signed-off-by: John Arbuckle <programmingkidx(a)gmail.com>
Note: this patch depends on the strstr() and return stack substitution patches.
Index: libopenbios/bootinfo_load.c
===================================================================
--- libopenbios/bootinfo_load.c (revision 1395)
+++ libopenbios/bootinfo_load.c (working copy)
@@ -19,6 +19,7 @@
#include "libopenbios/bootinfo_load.h"
#include "libopenbios/ofmem.h"
#include "libc/vsprintf.h"
+#include "libc/string.h"
//#define DEBUG_BOOTINFO
@@ -116,6 +117,75 @@
return LOADER_NOT_SUPPORT;
}
+// Replace all occurrences of orig_str in buffer with replace_str
+static void replace_string(char *buffer, const char *orig_str, const char *replace_str)
+{
+ char *ptr;
+ int index, new_buf_index = 0;
+ const int max_size = 5000;
+ char *new_buffer = malloc(max_size * sizeof(char));
+
+ for (index = 0; index < strlen(buffer); index++) {
+ if (buffer[index] == orig_str[0]) {
+ ptr = strstr(buffer + index, orig_str);
+
+ // if we encountered an orig_str in the buffer
+ if (index == (ptr - buffer)) {
+ sprintf(new_buffer + new_buf_index, "%s ", replace_str);
+ new_buf_index += strlen(replace_str) + 1;
+ index += strlen(orig_str);
+ continue;
+ }
+ }
+ new_buffer[new_buf_index++] = buffer[index];
+ }
+
+ // copy new_buffer into buffer
+ for (index = 0; index < strlen(new_buffer); index++) {
+ buffer[index] = new_buffer[index];
+ }
+ buffer[index+1] = '\0';
+}
+
+/* Replace >r and r> with sub_>r and sub_r> */
+static void replace_return_stack_words(char *bootscript)
+{
+ const char *find_str1 = ">r";
+ const char *replace_str1 = "sub_>r";
+ const char *find_str2 = "r>";
+ const char *replace_str2 = "sub_r>";
+
+ replace_string(bootscript, find_str1, replace_str1);
+ replace_string(bootscript, find_str2, replace_str2);
+}
+
+/* Runs the bootscript one line at a time */
+void run_script(char *bootscript)
+{
+ int index = 0, buf_index = 0;
+ char c;
+ char *buffer = malloc(1000 * sizeof(char));
+
+ while (1) {
+ c = bootscript[index];
+
+ // fill up buffer
+ while (c != '\n' && c != '\r' && c != '\0') {
+ buffer[buf_index++] = c;
+ c = bootscript[++index];
+ }
+ buffer[buf_index] = '\0';
+ buf_index = 0;
+ index++;
+ DPRINTF("%s\n", buffer);
+ feval(buffer);
+ if (c == '\0') {
+ break;
+ }
+ }
+ free(buffer);
+}
+
/*
Parse SGML structure like:
<chrp-boot>
@@ -209,9 +279,6 @@
script = 0;
bootscript[scriptlen] = '\0';
- DPRINTF("got bootscript %s\n",
- bootscript);
-
scriptvalid = -1;
break;
@@ -261,8 +328,8 @@
/* If the payload is bootinfo then we execute it immediately */
if (scriptvalid) {
- DPRINTF("bootscript: %s\n", bootscript);
- feval(bootscript);
+ replace_return_stack_words(bootscript);
+ run_script(bootscript);
}
else
DPRINTF("Unable to parse bootinfo bootscript\n");
4
9
On 28/11/17 20:45, Max Ruttenberg wrote:
> Hi all,
>
> I'm interested in porting openbios to a board with QorIQ ppce5500
> processor. The board currently uses U-Boot as its primary and
> secondary boot loader.
>
> Is it possible to boot into an openbios image from U-Boot?
> Is there a porting guide?
Hi Max,
Building OpenBIOS generates an ELF image, so if you can include an ELF
payload then this should be possible.
Regarding porting to a new board, I wrote some notes last year in
response to a similar query at
https://mail.coreboot.org/pipermail/openbios/2016-November/009837.html
which you may find useful.
Hopefully that gives you a good starting point, and feel free to ask any
further questions you may have on list (posts are moderated by default
unless you are a list member).
ATB,
Mark.
1
0
Hi all,
I'm interested in porting openbios to a board with QorIQ ppce5500
processor. The board currently uses U-Boot as its primary and
secondary boot loader.
Is it possible to boot into an openbios image from U-Boot?
Is there a porting guide?
Thank you,
Max
1
0
On 07/11/17 02:23, Huang, Jie (Jackie) wrote:
> Hi,
>
> I wanted to report an issue for openbios but failed to access the issue tracker:
>
> https://tracker.coreboot.org/trac/openbios
>
> Is this the correct issue tracker openbios is using?
>
> I found openbios is also in github, so I reported the issue there instead(but it
> doesn't seem to be the correct one, there is 0 issue before I reported):
> https://github.com/openbios/openbios/issues/2
>
> Thanks,
> Jackie
Hi Jackie,
The official OpenBIOS bug tracker moved to github a while back, so the
above link is no longer correct.
I updated the OpenBIOS wiki at https://www.openfirmware.info/OpenBIOS to
reflect the new link *within* the page, however I don't currently have
access to the link in the sidebar which might be where the confusion
comes from. I'll see if I can talk to someone to get this fixed.
Thanks for reporting the issue, I will try and take a look at this later.
ATB,
Mark.
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Hi,
I wanted to report an issue for openbios but failed to access the issue tracker:
https://tracker.coreboot.org/trac/openbios
Is this the correct issue tracker openbios is using?
I found openbios is also in github, so I reported the issue there instead(but it
doesn't seem to be the correct one, there is 0 issue before I reported):
https://github.com/openbios/openbios/issues/2
Thanks,
Jackie
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