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authorEric Biederman <ebiederm@xmission.com>2004-10-30 08:05:41 +0000
committerEric Biederman <ebiederm@xmission.com>2004-10-30 08:05:41 +0000
commitf8a2dddb573faef41ad43ee111d91d4c5259ad59 (patch)
tree3606ac56f585bce51868b8a5388bf9d0bb4561b9 /src/cpu/x86/mtrr
parent0afcba7a3d0e7dc22818ecdfd79230f5fb987f0d (diff)
- To reduce confuse rename the parts of linuxbios bios that run from
ram linuxbios_ram instead of linuxbios_c and linuxbios_payload... - Reordered the linker sections so the LinuxBIOS fallback image can take more the 64KiB on x86 - ROM_IMAGE_SIZE now will work when it is specified as larger than 64KiB. - Tweaked the reset16.inc and reset16.lds to move the sanity check to see if everything will work. - Start using romcc's built in preprocessor (This will simplify header compiler checks) - Add helper functions for examining all of the resources - Remove debug strings from chip.h - Add llshell to src/arch/i386/llshell (Sometime later I can try it...) - Add the ability to catch exceptions on x86 - Add gdb_stub support to x86 - Removed old cpu options - Added an option so we can detect movnti support - Remove some duplicate definitions from pci_ids.h - Remove the 64bit resource code in amdk8/northbridge.c in preparation for making it generic - Minor romcc bug fixes git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1727 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/cpu/x86/mtrr')
-rw-r--r--src/cpu/x86/mtrr/earlymtrr.c22
-rw-r--r--src/cpu/x86/mtrr/mtrr.c126
2 files changed, 77 insertions, 71 deletions
diff --git a/src/cpu/x86/mtrr/earlymtrr.c b/src/cpu/x86/mtrr/earlymtrr.c
index e8fda994af..74e0a64dce 100644
--- a/src/cpu/x86/mtrr/earlymtrr.c
+++ b/src/cpu/x86/mtrr/earlymtrr.c
@@ -6,20 +6,26 @@
/* Validate XIP_ROM_SIZE and XIP_ROM_BASE */
#if defined(XIP_ROM_SIZE) && !defined(XIP_ROM_BASE)
-#error "XIP_ROM_SIZE without XIP_ROM_BASE"
+# error "XIP_ROM_SIZE without XIP_ROM_BASE"
#endif
#if defined(XIP_ROM_BASE) && !defined(XIP_ROM_SIZE)
-#error "XIP_ROM_BASE without XIP_ROM_SIZE"
+# error "XIP_ROM_BASE without XIP_ROM_SIZE"
#endif
#if !defined(CONFIG_LB_MEM_TOPK)
-#error "CONFIG_LB_MEM_TOPK not defined"
+# error "CONFIG_LB_MEM_TOPK not defined"
#endif
-#if defined(XIP_ROM_SIZE) && ((XIP_ROM_SIZE & (XIP_ROM_SIZE -1)) != 0)
-#error "XIP_ROM_SIZE is not a power of 2"
-#endif
-#if defined(XIP_ROM_SIZE) && ((XIP_ROM_BASE % XIP_ROM_SIZE) != 0)
-#error "XIP_ROM_BASE is not a multiple of XIP_ROM_SIZE"
+#if __ROMCC__ == 0 && __ROMCC_MINOR__ <= 64
+
+#warning "Not checking if XIP_ROM_SIZE is valid to avoid romcc preprocessor deficiency"
+
+#else
+# if defined(XIP_ROM_SIZE) && ((XIP_ROM_SIZE & (XIP_ROM_SIZE -1)) != 0)
+# error "XIP_ROM_SIZE is not a power of 2"
+# endif
+# if defined(XIP_ROM_SIZE) && ((XIP_ROM_BASE % XIP_ROM_SIZE) != 0)
+# error "XIP_ROM_BASE is not a multiple of XIP_ROM_SIZE"
+# endif
#endif
#if (CONFIG_LB_MEM_TOPK & (CONFIG_LB_MEM_TOPK -1)) != 0
diff --git a/src/cpu/x86/mtrr/mtrr.c b/src/cpu/x86/mtrr/mtrr.c
index 5ffaaf053f..dcf9f008e2 100644
--- a/src/cpu/x86/mtrr/mtrr.c
+++ b/src/cpu/x86/mtrr/mtrr.c
@@ -23,6 +23,7 @@
* Reference: Intel Architecture Software Developer's Manual, Volume 3: System Programming
*/
+#include <stddef.h>
#include <console/console.h>
#include <device/device.h>
#include <cpu/x86/msr.h>
@@ -250,15 +251,61 @@ static unsigned long resk(uint64_t value)
return resultk;
}
+static void set_fixed_mtrr_resource(void *gp, struct device *dev, struct resource *res)
+{
+ unsigned int start_mtrr;
+ unsigned int last_mtrr;
+ start_mtrr = fixed_mtrr_index(resk(res->base));
+ last_mtrr = fixed_mtrr_index(resk((res->base + res->size)));
+ if (start_mtrr >= NUM_FIXED_RANGES) {
+ return;
+ }
+ printk_debug("Setting fixed MTRRs(%d-%d) Type: WB\n",
+ start_mtrr, last_mtrr);
+ set_fixed_mtrrs(start_mtrr, last_mtrr, MTRR_TYPE_WRBACK);
+
+}
+
+struct var_mtrr_state {
+ unsigned long range_startk, range_sizek;
+ unsigned int reg;
+};
+
+void set_var_mtrr_resource(void *gp, struct device *dev, struct resource *res)
+{
+ struct var_mtrr_state *state = gp;
+ unsigned long basek, sizek;
+ if (state->reg >= BIOS_MTRRS)
+ return;
+ basek = resk(res->base);
+ sizek = resk(res->size);
+ /* See if I can merge with the last range
+ * Either I am below 1M and the fixed mtrrs handle it, or
+ * the ranges touch.
+ */
+ if ((basek <= 1024) || (state->range_startk + state->range_sizek == basek)) {
+ unsigned long endk = basek + sizek;
+ state->range_sizek = endk - state->range_startk;
+ return;
+ }
+ /* Write the range mtrrs */
+ if (state->range_sizek != 0) {
+ state->reg = range_to_mtrr(state->reg, state->range_startk, state->range_sizek, basek);
+ state->range_startk = 0;
+ state->range_sizek = 0;
+ }
+ /* Allocate an msr */
+ state->range_startk = basek;
+ state->range_sizek = sizek;
+}
+
void x86_setup_mtrrs(void)
{
/* Try this the simple way of incrementally adding together
* mtrrs. If this doesn't work out we can get smart again
* and clear out the mtrrs.
*/
- struct device *dev;
- unsigned long range_startk, range_sizek;
- unsigned int reg;
+ struct var_mtrr_state var_state;
printk_debug("\n");
/* Initialized the fixed_mtrrs to uncached */
@@ -268,76 +315,29 @@ void x86_setup_mtrrs(void)
/* Now see which of the fixed mtrrs cover ram.
*/
- for(dev = all_devices; dev; dev = dev->next) {
- struct resource *res, *last;
- last = &dev->resource[dev->resources];
- for(res = &dev->resource[0]; res < last; res++) {
- unsigned int start_mtrr;
- unsigned int last_mtrr;
- if (!(res->flags & IORESOURCE_MEM) ||
- !(res->flags & IORESOURCE_CACHEABLE))
- {
- continue;
- }
- start_mtrr = fixed_mtrr_index(resk(res->base));
- last_mtrr = fixed_mtrr_index(resk((res->base + res->size)));
- if (start_mtrr >= NUM_FIXED_RANGES) {
- continue;
- }
- printk_debug("Setting fixed MTRRs(%d-%d) Type: WB\n",
- start_mtrr, last_mtrr);
- set_fixed_mtrrs(start_mtrr, last_mtrr, MTRR_TYPE_WRBACK);
- }
- }
+ search_global_resources(
+ IORESOURCE_MEM | IORESOURCE_CACHEABLE, IORESOURCE_MEM | IORESOURCE_CACHEABLE,
+ set_fixed_mtrr_resource, NULL);
printk_debug("DONE fixed MTRRs\n");
+
/* Cache as many memory areas as possible */
/* FIXME is there an algorithm for computing the optimal set of mtrrs?
* In some cases it is definitely possible to do better.
*/
- range_startk = 0;
- range_sizek = 0;
- reg = 0;
- for(dev = all_devices; dev; dev = dev->next) {
- struct resource *res, *last;
- last = &dev->resource[dev->resources];
- for(res = &dev->resource[0]; res < last; res++) {
- unsigned long basek, sizek;
- if (!(res->flags & IORESOURCE_MEM) ||
- !(res->flags & IORESOURCE_CACHEABLE)) {
- continue;
- }
- basek = resk(res->base);
- sizek = resk(res->size);
- /* See if I can merge with the last range
- * Either I am below 1M and the fixed mtrrs handle it, or
- * the ranges touch.
- */
- if ((basek <= 1024) || (range_startk + range_sizek == basek)) {
- unsigned long endk = basek + sizek;
- range_sizek = endk - range_startk;
- continue;
- }
- /* Write the range mtrrs */
- if (range_sizek != 0) {
- reg = range_to_mtrr(reg, range_startk, range_sizek, basek);
- range_startk = 0;
- range_sizek = 0;
- if (reg >= BIOS_MTRRS)
- goto last_msr;
- }
- /* Allocate an msr */
- range_startk = basek;
- range_sizek = sizek;
- }
- }
+ var_state.range_startk = 0;
+ var_state.range_sizek = 0;
+ var_state.reg = 0;
+ search_global_resources(
+ IORESOURCE_MEM | IORESOURCE_CACHEABLE, IORESOURCE_MEM | IORESOURCE_CACHEABLE,
+ set_var_mtrr_resource, &var_state);
last_msr:
/* Write the last range */
- reg = range_to_mtrr(reg, range_startk, range_sizek, 0);
+ var_state.reg = range_to_mtrr(var_state.reg, var_state.range_startk, var_state.range_sizek, 0);
printk_debug("DONE variable MTRRs\n");
printk_debug("Clear out the extra MTRR's\n");
/* Clear out the extra MTRR's */
- while(reg < MTRRS) {
- set_var_mtrr(reg++, 0, 0, 0);
+ while(var_state.reg < MTRRS) {
+ set_var_mtrr(var_state.reg++, 0, 0, 0);
}
/* enable fixed MTRR */
printk_spew("call enable_fixed_mtrr()\n");