1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
--- a/arch/mips/bcm47xx/prom.c
+++ b/arch/mips/bcm47xx/prom.c
@@ -32,6 +32,7 @@
#include <asm/fw/cfe/cfe_error.h>
static int cfe_cons_handle;
+static void (* __prom_putchar)(char c);
const char *get_system_type(void)
{
@@ -40,65 +41,40 @@ const char *get_system_type(void)
void prom_putchar(char c)
{
+ if (__prom_putchar)
+ __prom_putchar(c);
+}
+
+void prom_putchar_cfe(char c)
+{
while (cfe_write(cfe_cons_handle, &c, 1) == 0)
;
}
-static __init void prom_init_cfe(void)
+static __init int prom_init_cfe(void)
{
uint32_t cfe_ept;
uint32_t cfe_handle;
uint32_t cfe_eptseal;
- int argc = fw_arg0;
- char **envp = (char **) fw_arg2;
- int *prom_vec = (int *) fw_arg3;
-
- /*
- * Check if a loader was used; if NOT, the 4 arguments are
- * what CFE gives us (handle, 0, EPT and EPTSEAL)
- */
- if (argc < 0) {
- cfe_handle = (uint32_t)argc;
- cfe_ept = (uint32_t)envp;
- cfe_eptseal = (uint32_t)prom_vec;
- } else {
- if ((int)prom_vec < 0) {
- /*
- * Old loader; all it gives us is the handle,
- * so use the "known" entrypoint and assume
- * the seal.
- */
- cfe_handle = (uint32_t)prom_vec;
- cfe_ept = 0xBFC00500;
- cfe_eptseal = CFE_EPTSEAL;
- } else {
- /*
- * Newer loaders bundle the handle/ept/eptseal
- * Note: prom_vec is in the loader's useg
- * which is still alive in the TLB.
- */
- cfe_handle = prom_vec[0];
- cfe_ept = prom_vec[2];
- cfe_eptseal = prom_vec[3];
- }
- }
- if (cfe_eptseal != CFE_EPTSEAL) {
- /* too early for panic to do any good */
- printk(KERN_ERR "CFE's entrypoint seal doesn't match.");
- while (1) ;
- }
+ cfe_eptseal = (uint32_t) fw_arg3;
+ cfe_handle = (uint32_t) fw_arg0;
+ cfe_ept = (uint32_t) fw_arg2;
+
+ if (cfe_eptseal != CFE_EPTSEAL)
+ return -1;
cfe_init(cfe_handle, cfe_ept);
+ return 0;
}
-static __init void prom_init_console(void)
+static __init void prom_init_console_cfe(void)
{
/* Initialize CFE console */
cfe_cons_handle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE);
}
-static __init void prom_init_cmdline(void)
+static __init void prom_init_cmdline_cfe(void)
{
char buf[CL_SIZE];
@@ -146,9 +122,12 @@ static __init void prom_init_mem(void)
void __init prom_init(void)
{
- prom_init_cfe();
- prom_init_console();
- prom_init_cmdline();
+ if (prom_init_cfe() == 0) {
+ prom_init_console_cfe();
+ prom_init_cmdline_cfe();
+ __prom_putchar = prom_putchar_cfe;
+ }
+
prom_init_mem();
}
|
