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authorMarshall Dawson <marshalldawson3rd@gmail.com>2017-09-06 14:59:45 -0600
committerMartin Roth <martinroth@google.com>2017-09-26 16:40:11 +0000
commit29f1b747954784a7b133e9db79382d8d466a7f3a (patch)
treed5e6a2783282f5aa35585cbeb4842d5bcf058028
parentc8050f4bfcb781dbaf565684b21a4e04b1dc769e (diff)
amd/stoneyridge: Simplify memory hole calculation
Delete the obselete Kconfig symbols regarding the memory hole. Integrate the hole check into domain_set_resources(). The hardware configuration is done by AGESA, so only discover the setting and adjust the mmio_basek accordingly. BUG=b:66202887 TEST=Check settings with HDT Change-Id: Id15a88897e29bff28ab7c498dc4d3818834f08b2 Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-on: https://review.coreboot.org/21496 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
-rw-r--r--src/soc/amd/stoneyridge/Kconfig8
-rw-r--r--src/soc/amd/stoneyridge/northbridge.c64
2 files changed, 11 insertions, 61 deletions
diff --git a/src/soc/amd/stoneyridge/Kconfig b/src/soc/amd/stoneyridge/Kconfig
index f8768e7ea7..1e13cc0383 100644
--- a/src/soc/amd/stoneyridge/Kconfig
+++ b/src/soc/amd/stoneyridge/Kconfig
@@ -110,14 +110,6 @@ config BOTTOMIO_POSITION
option is useful when PCI peripherals requesting large address
ranges are present.
-config HW_MEM_HOLE_SIZEK
- hex
- default 0x200000
-
-config HW_MEM_HOLE_SIZE_AUTO_INC
- bool
- default n
-
config MMCONF_BASE_ADDRESS
hex
default 0xF8000000
diff --git a/src/soc/amd/stoneyridge/northbridge.c b/src/soc/amd/stoneyridge/northbridge.c
index 79336d820e..922342971c 100644
--- a/src/soc/amd/stoneyridge/northbridge.c
+++ b/src/soc/amd/stoneyridge/northbridge.c
@@ -412,71 +412,29 @@ void domain_enable_resources(device_t dev)
printk(BIOS_DEBUG, " ader - leaving domain_enable_resources.\n");
}
-#if CONFIG_HW_MEM_HOLE_SIZEK != 0
-struct hw_mem_hole_info {
- unsigned int hole_startk;
- int node_id;
-};
-
-static struct hw_mem_hole_info get_hw_mem_hole_info(void)
-{
- struct hw_mem_hole_info mem_hole;
- mem_hole.hole_startk = CONFIG_HW_MEM_HOLE_SIZEK;
- mem_hole.node_id = -1;
- dram_base_mask_t d;
- u32 hole;
- d = get_dram_base_mask();
- hole = pci_read_config32(dev_find_slot(0, ADDR_DEVFN), 0xf0);
- if (hole & 2) {
- /* We found the hole */
- mem_hole.hole_startk = (hole & (0xff << 24)) >> 10;
- mem_hole.node_id = 0; /* record the node # with hole */
- }
-
- return mem_hole;
-}
-#endif
-
void domain_set_resources(device_t dev)
{
unsigned long mmio_basek;
u32 pci_tolm;
+ u32 hole;
int idx;
struct bus *link;
-#if CONFIG_HW_MEM_HOLE_SIZEK != 0
- struct hw_mem_hole_info mem_hole;
- u32 reset_memhole = 1;
-#endif
pci_tolm = 0xffffffffUL;
for (link = dev->link_list ; link ; link = link->next)
pci_tolm = find_pci_tolm(link);
- mmio_basek = pci_tolm >> 10;
- /* Round mmio_basek to something the processor can support */
- mmio_basek &= ~((1 << 6) - 1);
-
- /* FIXME improve mtrr.c so we don't use up all of the mtrrs with a 64M
- * MMIO hole. If you fix this here, please fix amdk8, too.
- */
- /* Round the mmio hole to 64M */
- mmio_basek &= ~((64 * 1024) - 1);
-
-#if CONFIG_HW_MEM_HOLE_SIZEK != 0
- /* if the hw mem hole is already set in raminit stage, here we will
- * compare mmio_basek and hole_basek. if mmio_basek is bigger that
- * hole_basek and will use hole_basek as mmio_basek and we don't need
- * to reset hole. Otherwise we reset the hole to the mmio_basek
- */
-
- mem_hole = get_hw_mem_hole_info();
+ /* Start with alignment supportable in variable MTRR */
+ mmio_basek = ALIGN_DOWN(pci_tolm, 4 * KiB) / KiB;
- /* Use hole_basek as mmio_basek, and no need to reset hole anymore */
- if ((mem_hole.node_id != -1) && (mmio_basek > mem_hole.hole_startk)) {
- mmio_basek = mem_hole.hole_startk;
- reset_memhole = 0;
- }
-#endif
+ /*
+ * AGESA may have programmed the memory hole and rounded down to a
+ * 128MB boundary. If we find it's valid, adjust mmio_basek downward
+ * to the hole bottom. D18F1xF0[DramHoleBase] is granular to 16MB.
+ */
+ hole = pci_read_config32(dev_find_slot(0, ADDR_DEVFN), D18F1_DRAM_HOLE);
+ if (hole & DRAM_HOLE_VALID)
+ mmio_basek = min(mmio_basek, ALIGN_DOWN(hole, 16 * MiB) / KiB);
idx = 0x10;
dram_base_mask_t d;