In order to use QMC mode in the CPM, a SCC requires more space in parameter RAM.
After SCC1 there is I2C parameter RAM and after SCC2 there is SPI parameter RAM. MPC866 and MPC885 can already relocate I2C and. SPI parameter RAM.
But in order to free space after SCC3 and SCC4, SMC1 and SMC2 need to be relocated. In order to do so, a CPM microcode patch is required.
Binary data for that patch is copied from Linux kernel.
Signed-off-by: Christophe Leroy christophe.leroy@csgroup.eu --- arch/powerpc/cpu/mpc8xx/Kconfig | 20 +++++ arch/powerpc/cpu/mpc8xx/Makefile | 1 + arch/powerpc/cpu/mpc8xx/micropatch_smc.c | 105 +++++++++++++++++++++++ 3 files changed, 126 insertions(+) create mode 100644 arch/powerpc/cpu/mpc8xx/micropatch_smc.c
diff --git a/arch/powerpc/cpu/mpc8xx/Kconfig b/arch/powerpc/cpu/mpc8xx/Kconfig index 52caf06aac..bd2af8dc10 100644 --- a/arch/powerpc/cpu/mpc8xx/Kconfig +++ b/arch/powerpc/cpu/mpc8xx/Kconfig @@ -53,6 +53,26 @@ config USB_SOF_UCODE_PATCH Although the data is received correctly, the CRC result will be corrupted.
+config SMC_UCODE_PATCH + bool "SMC relocation patch" + help + This microcode relocates SMC1 and SMC2 parameter RAMs to allow + extended parameter RAM for SCC3 and SCC4 (ex: for QMC mode) + +config SMC1_RPBASE + hex "SMC1 relocation offset" + depends on SMC_UCODE_PATCH + default 0x1e80 + help + Offset of SMC1 parameter RAM to be written to RPBASE register. + +config SMC2_RPBASE + hex "SMC2 relocation offset" + depends on SMC_UCODE_PATCH + default 0x1f80 + help + Offset of SMC2 parameter RAM to be written to RPBASE register. + endchoice
comment "Specific commands" diff --git a/arch/powerpc/cpu/mpc8xx/Makefile b/arch/powerpc/cpu/mpc8xx/Makefile index 5a6561e024..28a21eeb76 100644 --- a/arch/powerpc/cpu/mpc8xx/Makefile +++ b/arch/powerpc/cpu/mpc8xx/Makefile @@ -13,3 +13,4 @@ obj-y += interrupts.o obj-y += speed.o obj-y += cache.o obj-$(CONFIG_USB_SOF_UCODE_PATCH) += micropatch_usb_sof.o +obj-$(CONFIG_SMC_UCODE_PATCH) += micropatch_smc.o diff --git a/arch/powerpc/cpu/mpc8xx/micropatch_smc.c b/arch/powerpc/cpu/mpc8xx/micropatch_smc.c new file mode 100644 index 0000000000..89406797cc --- /dev/null +++ b/arch/powerpc/cpu/mpc8xx/micropatch_smc.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Microcode patches for the CPM as supplied by Motorola. + */ + +#include <linux/string.h> +#include <linux/io.h> +#include <asm/immap_8xx.h> +#include <asm/cpm_8xx.h> + +static uint patch_2000[] = { + 0x3fff0000, 0x3ffd0000, 0x3ffb0000, 0x3ff90000, + 0x5fefeff8, 0x5f91eff8, 0x3ff30000, 0x3ff10000, + 0x3a11e710, 0xedf0ccb9, 0xf318ed66, 0x7f0e5fe2, + 0x7fedbb38, 0x3afe7468, 0x7fedf4d8, 0x8ffbb92d, + 0xb83b77fd, 0xb0bb5eb9, 0xdfda7fed, 0x90bde74d, + 0x6f0dcbd3, 0xe7decfed, 0xcb50cfed, 0xcfeddf6d, + 0x914d4f74, 0x5eaedfcb, 0x9ee0e7df, 0xefbb6ffb, + 0xe7ef7f0e, 0x9ee57fed, 0xebb7effa, 0xeb30affb, + 0x7fea90b3, 0x7e0cf09f, 0xbffff318, 0x5fffdfff, + 0xac35efea, 0x7fce1fc1, 0xe2ff5fbd, 0xaffbe2ff, + 0x5fbfaffb, 0xf9a87d0f, 0xaef8770f, 0x7d0fb0a2, + 0xeffbbfff, 0xcfef5fba, 0x7d0fbfff, 0x5fba4cf8, + 0x7fddd09b, 0x49f847fd, 0x7efdf097, 0x7fedfffd, + 0x7dfdf093, 0xef7e7e1e, 0x5fba7f0e, 0x3a11e710, + 0xedf0cc87, 0xfb18ad0a, 0x1f85bbb8, 0x74283b7e, + 0x7375e4bb, 0x2ab64fb8, 0x5c7de4bb, 0x32fdffbf, + 0x5f0843f8, 0x7ce3e1bb, 0xe74f7ded, 0x6f0f4fe8, + 0xc7ba32be, 0x73f2efeb, 0x600b4f78, 0xe5bb760b, + 0x5388aef8, 0x4ef80b6a, 0xcfef9ee5, 0xabf8751f, + 0xefef5b88, 0x741f4fe8, 0x751e760d, 0x7fdb70dd, + 0x741cafce, 0xefcc7fce, 0x751e7088, 0x741ce7bb, + 0x334ecfed, 0xafdbefeb, 0xe5bb760b, 0x53ceaef8, + 0xafe8e7eb, 0x4bf8771e, 0x7e007fed, 0x4fcbe2cc, + 0x7fbc3085, 0x7b0f7a0f, 0x34b177fd, 0xb0e75e93, + 0xdf313e3b, 0xaf78741f, 0x741f30cc, 0xcfef5f08, + 0x741f3e88, 0xafb8771e, 0x5f437fed, 0x0bafe2cc, + 0x741ccfec, 0xe5ca53a9, 0x6fcb4f74, 0x5e89df27, + 0x2a923d14, 0x4b8fdf0c, 0x751f741c, 0x6c1eeffa, + 0xefea7fce, 0x6ffc309a, 0xefec3fca, 0x308fdf0a, + 0xadf85e7a, 0xaf7daefd, 0x5e7adf0a, 0x5e7aafdd, + 0x761f1088, 0x1e7c7efd, 0x3089fffe, 0x4908fb18, + 0x5fffdfff, 0xafbbf0f7, 0x4ef85f43, 0xadf81489, + 0x7a0f7089, 0xcfef5089, 0x7a0fdf0c, 0x5e7cafed, + 0xbc6e780f, 0xefef780f, 0xefef790f, 0xa7f85eeb, + 0xffef790f, 0xefef790f, 0x1489df0a, 0x5e7aadfd, + 0x5f09fffb, 0xe79aded9, 0xeff96079, 0x607ae79a, + 0xded8eff9, 0x60795edb, 0x607acfef, 0xefefefdf, + 0xefbfef7f, 0xeeffedff, 0xebffe7ff, 0xafefafdf, + 0xafbfaf7f, 0xaeffadff, 0xabffa7ff, 0x6fef6fdf, + 0x6fbf6f7f, 0x6eff6dff, 0x6bff67ff, 0x2fef2fdf, + 0x2fbf2f7f, 0x2eff2dff, 0x2bff27ff, 0x4e08fd1f, + 0xe5ff6e0f, 0xaff87eef, 0x7e0ffdef, 0xf11f6079, + 0xabf8f51e, 0x7e0af11c, 0x37cfae16, 0x7fec909a, + 0xadf8efdc, 0xcfeae52f, 0x7d0fe12b, 0xf11c6079, + 0x7e0a4df8, 0xcfea5ea0, 0x7d0befec, 0xcfea5ea2, + 0xe522efdc, 0x5ea2cfda, 0x4e08fd1f, 0x6e0faff8, + 0x7c1f761f, 0xfdeff91f, 0x6079abf8, 0x761cee00, + 0xf91f2bfb, 0xefefcfec, 0xf91f6079, 0x761c27fb, + 0xefdf5e83, 0xcfdc7fdd, 0x50f84bf8, 0x47fd7c1f, + 0x761ccfcf, 0x7eef7fed, 0x7dfd70ef, 0xef7e7f1e, + 0x771efb18, 0x6079e722, 0xe6bbe5bb, 0x2e66e5bb, + 0x600b2ee1, 0xe2bbe2bb, 0xe2bbe2bb, 0x2f5ee2bb, + 0xe2bb2ff9, 0x6079e2bb, +}; + +static uint patch_2f00[] = { + 0x30303030, 0x3e3e3030, 0xaf79b9b3, 0xbaa3b979, + 0x9693369f, 0x79f79777, 0x97333fff, 0xfb3b9e9f, + 0x79b91d11, 0x9e13f3ff, 0x3f9b6bd9, 0xe173d136, + 0x695669d1, 0x697b3daf, 0x79b93a3a, 0x3f979f91, + 0x379ff976, 0xf99777fd, 0x9779737d, 0xe9d6bbf9, + 0xbfffd9df, 0x97f7fd97, 0x6f7b9bff, 0xf9bd9683, + 0x397db973, 0xd97b3b9f, 0xd7f9f733, 0x9993bb9e, + 0xe1f9ef93, 0x73773337, 0xb936917d, 0x11f87379, + 0xb979d336, 0x8b7ded73, 0x1b7d9337, 0x31f3f22f, + 0x3f2327ee, 0xeeeeeeee, 0xeeeeeeee, 0xeeeeeeee, + 0xeeeeee4b, 0xf4fbdbd2, 0x58bb1878, 0x577fdfd2, + 0xd573b773, 0xf7374b4f, 0xbdbd25b8, 0xb177d2d1, + 0x7376856b, 0xbfdd687b, 0xdd2fff8f, 0x78ffff8f, + 0xf22f0000, +}; + +void cpm_load_patch(cpm8xx_t __iomem *cp) +{ + smc_uart_t __iomem *smp; + + out_be16(&cp->cp_rccr, 0); + + memcpy_toio(cp->cp_dpmem, patch_2000, sizeof(patch_2000)); + memcpy_toio(cp->cp_dpmem + 0xf00, patch_2f00, sizeof(patch_2f00)); + + smp = (smc_uart_t __iomem *)&cp->cp_dpmem[PROFF_SMC1]; + out_be16(&smp->smc_rpbase, CONFIG_SMC1_RPBASE); + smp = (smc_uart_t __iomem *)&cp->cp_dpmem[PROFF_SMC2]; + out_be16(&smp->smc_rpbase, CONFIG_SMC2_RPBASE); + + out_be16(&cp->cp_cpmcr1, 0x8080); + out_be16(&cp->cp_cpmcr2, 0x8088); + out_be16(&cp->cp_cpmcr3, 0); + out_be16(&cp->cp_cpmcr4, 0); + + out_be16(&cp->cp_rccr, 2); +}