X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=qemu%2Froms%2Fu-boot%2Fboard%2Fesd%2Fpci405%2Fwriteibm.S;fp=qemu%2Froms%2Fu-boot%2Fboard%2Fesd%2Fpci405%2Fwriteibm.S;h=03eaf97b78e0e0df2fb0c671b9139898d90544dc;hb=e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb;hp=0000000000000000000000000000000000000000;hpb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;p=kvmfornfv.git

diff --git a/qemu/roms/u-boot/board/esd/pci405/writeibm.S b/qemu/roms/u-boot/board/esd/pci405/writeibm.S
new file mode 100644
index 000000000..03eaf97b7
--- /dev/null
+++ b/qemu/roms/u-boot/board/esd/pci405/writeibm.S
@@ -0,0 +1,205 @@
+/*
+ * SPDX-License-Identifier:	GPL-2.0	IBM-pibs
+ */
+/*----------------------------------------------------------------------------- */
+/* Function:     ext_bus_cntlr_init */
+/* Description:  Initializes the External Bus Controller for the external */
+/*		peripherals. IMPORTANT: For pass1 this code must run from */
+/*		cache since you can not reliably change a peripheral banks */
+/*		timing register (pbxap) while running code from that bank. */
+/*		For ex., since we are running from ROM on bank 0, we can NOT */
+/*		execute the code that modifies bank 0 timings from ROM, so */
+/*		we run it from cache. */
+/*	Bank 0 - Flash and SRAM */
+/*	Bank 1 - NVRAM/RTC */
+/*	Bank 2 - Keyboard/Mouse controller */
+/*	Bank 3 - IR controller */
+/*	Bank 4 - not used */
+/*	Bank 5 - not used */
+/*	Bank 6 - not used */
+/*	Bank 7 - FPGA registers */
+/*----------------------------------------------------------------------------- */
+#include <asm/ppc4xx.h>
+
+#include <ppc_asm.tmpl>
+#include <ppc_defs.h>
+
+#include <asm/cache.h>
+#include <asm/mmu.h>
+
+
+	.globl	write_without_sync
+write_without_sync:
+		/*
+		 * Write one values to host via pci busmastering
+		 * ptr = 0xc0000000 -> 0x01000000 (PCI)
+		 * *ptr = 0x01234567;
+		 */
+	addi    r31,0,0
+	lis     r31,0xc000
+
+start1:
+	lis     r0,0x0123
+	ori     r0,r0,0x4567
+	stw     r0,0(r31)
+
+		/*
+		 * Read one value back
+		 * ptr = (volatile unsigned long *)addr;
+		 * val = *ptr;
+		 */
+
+	lwz     r0,0(r31)
+
+		/*
+		 * One pci config write
+		 * ibmPciConfigWrite(0x2e, 2, 0x1234);
+		 */
+		/* subsystem id */
+
+	li      r4,0x002C
+	oris    r4,r4,0x8000
+	lis     r3,0xEEC0
+	stwbrx  r4,0,r3
+
+	li      r5,0x1234
+	ori     r3,r3,0x4
+	stwbrx  r5,0,r3
+
+	b       start1
+
+	blr	/* never reached !!!! */
+
+	.globl	write_with_sync
+write_with_sync:
+		/*
+		 * Write one values to host via pci busmastering
+		 * ptr = 0xc0000000 -> 0x01000000 (PCI)
+		 * *ptr = 0x01234567;
+		 */
+	addi    r31,0,0
+	lis     r31,0xc000
+
+start2:
+	lis     r0,0x0123
+	ori     r0,r0,0x4567
+	stw     r0,0(r31)
+
+		/*
+		 * Read one value back
+		 * ptr = (volatile unsigned long *)addr;
+		 * val = *ptr;
+		 */
+
+	lwz     r0,0(r31)
+
+		/*
+		 * One pci config write
+		 * ibmPciConfigWrite(0x2e, 2, 0x1234);
+		 */
+		/* subsystem id */
+
+	li      r4,0x002C
+	oris    r4,r4,0x8000
+	lis     r3,0xEEC0
+	stwbrx  r4,0,r3
+	sync
+
+	li      r5,0x1234
+	ori     r3,r3,0x4
+	stwbrx  r5,0,r3
+	sync
+
+	b       start2
+
+	blr	/* never reached !!!! */
+
+	.globl	write_with_less_sync
+write_with_less_sync:
+		/*
+		 * Write one values to host via pci busmastering
+		 * ptr = 0xc0000000 -> 0x01000000 (PCI)
+		 * *ptr = 0x01234567;
+		 */
+	addi    r31,0,0
+	lis     r31,0xc000
+
+start2b:
+	lis     r0,0x0123
+	ori     r0,r0,0x4567
+	stw     r0,0(r31)
+
+		/*
+		 * Read one value back
+		 * ptr = (volatile unsigned long *)addr;
+		 * val = *ptr;
+		 */
+
+	lwz     r0,0(r31)
+
+		/*
+		 * One pci config write
+		 * ibmPciConfigWrite(0x2e, 2, 0x1234);
+		 */
+		/* subsystem id */
+
+	li      r4,0x002C
+	oris    r4,r4,0x8000
+	lis     r3,0xEEC0
+	stwbrx  r4,0,r3
+	sync
+
+	li      r5,0x1234
+	ori     r3,r3,0x4
+	stwbrx  r5,0,r3
+/*        sync */
+
+	b       start2b
+
+	blr	/* never reached !!!! */
+
+	.globl	write_with_more_sync
+write_with_more_sync:
+		/*
+		 * Write one values to host via pci busmastering
+		 * ptr = 0xc0000000 -> 0x01000000 (PCI)
+		 * *ptr = 0x01234567;
+		 */
+	addi    r31,0,0
+	lis     r31,0xc000
+
+start3:
+	lis     r0,0x0123
+	ori     r0,r0,0x4567
+	stw     r0,0(r31)
+	sync
+
+		/*
+		 * Read one value back
+		 * ptr = (volatile unsigned long *)addr;
+		 * val = *ptr;
+		 */
+
+	lwz     r0,0(r31)
+	sync
+
+		/*
+		 * One pci config write
+		 * ibmPciConfigWrite(0x2e, 2, 0x1234);
+		 */
+		/* subsystem id (PCIC0_SBSYSVID)*/
+
+	li      r4,0x002C
+	oris    r4,r4,0x8000
+	lis     r3,0xEEC0
+	stwbrx  r4,0,r3
+	sync
+
+	li      r5,0x1234
+	ori     r3,r3,0x4
+	stwbrx  r5,0,r3
+	sync
+
+	b       start3
+
+	blr	/* never reached !!!! */