powerpc/t4qds: Slave module for boot from SRIO and PCIE
When a T4 board boots from SRIO or PCIE, it needs to finish these processes:
1. Set all the cores in holdoff status.
2. Set the boot location to one PCIE or SRIO interface by RCW.
3. Set a specific TLB entry for the boot process.
4. Set a LAW entry with the TargetID of one PCIE or SRIO for the boot.
5. Set a specific TLB entry in order to fetch ucode and ENV from
master.
6. Set a LAW entry with the TargetID one of the PCIE ports for
ucode and ENV.
7. Slave's u-boot image should be generated specifically by
make xxxx_SRIO_PCIE_BOOT_config.
This will set SYS_TEXT_BASE=0xFFF80000 and other configurations.
For more information about the feature of Boot from SRIO/PCIE, please
refer to the document doc/README.srio-pcie-boot-corenet.
Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/board/freescale/t4qds/tlb.c b/board/freescale/t4qds/tlb.c
index 92c01cf..a138d5a 100644
--- a/board/freescale/t4qds/tlb.c
+++ b/board/freescale/t4qds/tlb.c
@@ -55,6 +55,15 @@
SET_TLB_ENTRY(1, CONFIG_SYS_INIT_L3_ADDR, CONFIG_SYS_INIT_L3_ADDR,
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
0, 0, BOOKE_PAGESZ_1M, 1),
+#elif defined(CONFIG_SRIO_PCIE_BOOT_SLAVE)
+ /*
+ * SRIO_PCIE_BOOT-SLAVE. When slave boot, the address of the
+ * space is at 0xfff00000, it covered the 0xfffff000.
+ */
+ SET_TLB_ENTRY(1, CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR,
+ CONFIG_SYS_SRIO_PCIE_BOOT_SLAVE_ADDR_PHYS,
+ MAS3_SX|MAS3_SW|MAS3_SR, MAS2_W|MAS2_G,
+ 0, 0, BOOKE_PAGESZ_1M, 1),
#else
SET_TLB_ENTRY(1, 0xfffff000, 0xfffff000,
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
@@ -130,6 +139,16 @@
SET_TLB_ENTRY(1, QIXIS_BASE, QIXIS_BASE_PHYS,
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I|MAS2_G,
0, 17, BOOKE_PAGESZ_4K, 1),
+#ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE
+ /*
+ * SRIO_PCIE_BOOT-SLAVE. 1M space from 0xffe00000 for
+ * fetching ucode and ENV from master
+ */
+ SET_TLB_ENTRY(1, CONFIG_SYS_SRIO_PCIE_BOOT_UCODE_ENV_ADDR,
+ CONFIG_SYS_SRIO_PCIE_BOOT_UCODE_ENV_ADDR_PHYS,
+ MAS3_SX|MAS3_SW|MAS3_SR, MAS2_G,
+ 0, 18, BOOKE_PAGESZ_1M, 1),
+#endif
};